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Description USED Donor Vehicle VIN: JM1BM1M70E1204129 Model: 3 Year: 2014 Mileage: 43000 (0 = not available or unknown) Stock Number: 70902A Store Number: 1 Part Detail Part Grade: A Part Category: U Part Placement: Notes: *SOME ENGINE COMPUTER MUST BE PROGRAMED*CONTACT DEALER FOR UPDATED ID NUMBERS* This part will fit these makes and models with these options MAZDA 3 14 Electronic Control Module; (mounted by battery), 2.0L, AT, ID PEAB-18881-AMAZDA 3 14 Electronic Control Module; (mounted by battery), 2.5L, (AT), ID PEAB-18881-A   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: KMHEC4A41CA023884 Model: SONATA Year: 2012 Mileage: 99000 (0 = not available or unknown) Stock Number: 90601C Store Number: 1 Part Detail Part Grade: A Part Category: U Part Placement: Notes: 12 28 11,2.4,A This part will fit these makes and models with these options SONATA 11-12 Electronic Control Module; (LH under hood), 2.4L, VIN 4 (8th digit, hybrid)SONATA 13-14 Electronic Control Module; (LH under hood), 2.4L (AT), VIN 4 (8th digit, hybrid)SONATA 15 Electronic Control Module; (LH under hood), 2.4L, VIN 4 (8th digit, hybrid)   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: JM1BK123671731360 Model: 3 Year: 2007 Mileage: 132000 (0 = not available or unknown) Stock Number: 72049B Store Number: 1 Part Detail Part Grade: A Part Category: U Part Placement: Notes: 03 01 07,2.3,5SP,VERIFY ID This part will fit these makes and models with these options MAZDA 3 07 Electronic Control Module; (mounted by battery), 2.3L, MT, w/o turbo; ID L34S-18881-BMAZDA 3 07 Electronic Control Module; (mounted by battery), 2.3L, MT, w/o turbo; ID L34S-18881MAZDA 3 07 Electronic Control Module; (mounted by battery), 2.3L, MT, w/o turbo; ID L34S-18881-CMAZDA 3 07 Electronic Control Module; (mounted by battery), 2.3L, MT, w/o turbo; ID L34S-18881-D   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: 1N6ED26T31C324001 Model: FRONTIER Year: 2001 Mileage: 143000 (0 = not available or unknown) Stock Number: 80626B Store Number: 1 Part Detail Part Grade: A Part Category: U Part Placement: Notes: 09 1 00,3.3,A,VERIFY ID This part will fit these makes and models with these options FRONTIER 01 Electronic Control Module; 6 cylinder (behind lower console), AT, w/o supercharged option; ID 23710-5S601   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: 5NPD84LF4HH122571 Model: ELANTRA Year: 2017 Mileage: 62000 (0 = not available or unknown) Stock Number: 91393A Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 8 19 16,2.0,AT,MATCH ID This part will fit these makes and models with these options ELANTRA 17 Electronic Control Module; Canada market, Sedan, 2.0L, AT, (US built)ELANTRA 17-18 Electronic Control Module; US market, Sedan, 2.0L, AT, US built, ID 391712EFE0ELANTRA 18 Electronic Control Module; Canada market, Sedan, 2.0L, AT, US built   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: 5N1AN08W15C629685 Model: XTERRA Year: 2005 Mileage: 120000 (0 = not available or unknown) Stock Number: 91877C Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 05 01 05,4.0,AT This part will fit these makes and models with these options FRONTIER 05 Electronic Control Module; 6 cylinder (LH kick panel), 4x4, AT, w/cruise control, w/active brake limited slip, standard vehicle dynamic controlXTERRA 05 Electronic Control Module; (LH kick panel), 4x4, AT, w/o off road package; w/cruise control   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: JF1VA1D61F9813591 Model: V60 Year: 2015 Mileage: 55000 (0 = not available or unknown) Stock Number: 90816A Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 07 01 14,2.0,MT 5SP This part will fit these makes and models with these options WRX 15 Electronic Control Module; MT, 2.0L   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: KNDMB5C15G6121367 Model: SEDONA Year: 2016 Mileage: 100000 (0 = not available or unknown) Stock Number: 91240A Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 07 01 15,3.3,AT,VERIFY ID This part will fit these makes and models with these options SEDONA 16 Electronic Control Module; ID 391003CYN2   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: 1FTSW2BY4AEB35959 Model: F250SD Year: 2010 Mileage: 92000 (0 = not available or unknown) Stock Number: 91008A Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 02 01 10,6.8,AT,VERIFY ID This part will fit these makes and models with these options FORD F250SD PICKUP 09-10 Electronic Control Module; 6.8L, ID 9C3A-AMDFORD F350SD PICKUP 09-10 Electronic Control Module; 6.8L, ID 9C3A-AMEFORD F350SD PICKUP 09-10 Electronic Control Module; 6.8L, ID 9C3A-AMDFORD F250SD PICKUP 09-10 Electronic Control Module; 6.8L, ID 9C3A-AME   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: 3GKGC26F9XG509625 Model: SUBCHEV25 Year: 1999 Mileage: 146000 (0 = not available or unknown) Stock Number: 91389B Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 05 01 98,6.5,AT This part will fit these makes and models with these options EXPRESS 3500 VAN 99 Electronic Control Module; (center dash), dieselCHEVROLET 3500 PICKUP 01-02 Electronic Control Module; (I-beam front axle only), diesel (above blower motor), ID 16216588GMC 1500 PICKUP 96-98 Electronic Control Module; diesel (above blower motor)EXPRESS 2500 VAN 00-02 Electronic Control Module; (LH rear engine compartment), dieselGMC 3500 PICKUP 96-00 Electronic Control Module; diesel (above blower motor)TAHOE 96-99 Electronic Control Module; diesel (above blower motor)SAVANA 2500 VAN 99 Electronic Control Module; (center dash), dieselEXPRESS 2500 VAN 96-98 Electronic Control Module; dieselCHEVROLET 3500 PICKUP 96-00 Electronic Control Module; diesel (above blower motor)EXPRESS 3500 VAN 96-98 Electronic Control Module; dieselEXPRESS 3500 VAN 00-02 Electronic Control Module; (LH rear engine compartment), dieselSAVANA 3500 VAN 96-98 Electronic Control Module; dieselSUBURBAN 2500 96-99 Electronic Control Module; diesel (above blower motor)CHEVROLET 2500 PICKUP 96-00 Electronic Control Module; diesel (above blower motor)CHEVROLET 1500 PICKUP 96-98 Electronic Control Module; diesel (above blower motor)SAVANA 3500 VAN 00-02 Electronic Control Module; (LH rear engine compartment), dieselSAVANA 3500 VAN 99 Electronic Control Module; (center dash), dieselYUKON 96-97 Electronic Control Module; diesel (above blower motor)GMC 3500 PICKUP 01-02 Electronic Control Module; (I-beam front axle only), diesel (above blower motor), ID 16216588EXPRESS 2500 VAN 99 Electronic Control Module; (center dash), dieselSAVANA 2500 VAN 96-98 Electronic Control Module; dieselGMC 2500 PICKUP 96-00 Electronic Control Module; diesel (above blower motor)SAVANA 2500 VAN 00-02 Electronic Control Module; (LH rear engine compartment), dieselSUBURBAN 1500 96-99 Electronic Control Module; diesel (above blower motor)   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: JN1BJ1CP1JW184211 Model: ROGUE SPT Year: 2018 Mileage: 1000 (0 = not available or unknown) Stock Number: 90763A Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 6 01 18,2.0,A This part will fit these makes and models with these options ROGUE SPORT 18 Electronic Control Module; (MR20DD, 2.0L)QASHQAI 18 Electronic Control Module; (MR20DD, 2.0L)   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.

Description Donor Vehicle VIN: 2LMHJ5FR0BBJ50534 Model: MKT Year: 2011 Mileage: 164000 (0 = not available or unknown) Stock Number: 90833A Store Number: 1 Part Detail Part Grade: A Part Category: Y Part Placement: Notes: 05 01 10,3.7,A,VERIFY ID This part will fit these makes and models with these options MKT 11 Electronic Control Module; 3.7L, ID BE9A-12A650-AFMKT 11 Electronic Control Module; 3.7L, ID BE9A-12A650-AE   Arizona Auto & Truck Parts, Inc. 2021 W Buckeye Rd Phoenix, AZ 85009   Arizona Auto Parts Established in 1919, with nearly 100 years in the car parts business, Arizona Auto Parts has expertly and consistently served our customers with only the absolute highest level of customer service and trusted auto parts in the market. Through the years, our name has become synonymous with low prices and and quality used auto parts.Our team of sales representatives is highly trained and very accommodating. We are open 5 days a week for your orders and any questions you may have as well. Just call us toll free or use our Live Help System and we’ll promptly respond to your needs. Our hours are: Monday - Friday 8:00AM - 5:00PM Saturday - Sunday Closed   Core Charge. Core is an acronym for ‘Cash On Return’. A core charge is sometimes applied to re-buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied, it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers, automotive repair shops, and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade - The highest quality part. It is of low miles and/or exceptional condition for its age. B Grade - The second level quality part. It is of average miles and normal condition for its age. C Grade - The third level quality part. It has high miles and/or light damage. No Grade - A part that has not yet been graded.