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GMC 12554314 Main Seal

1996-2007 GMC

Customer Questions & Expert Answers (3)
12554314 GM Main Seal Product Photo 1 of 2
  • Part Description
    Seal, Engine Rear Main Bearing
  • Position
    Rear
  • Manufacturer
    General Motors
Make sure this part fits
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number12554314
    Part DescriptionMain Seal; Seal, Engine Rear Main Bearing
    Item Dimensions5.3 x 5.3 x 1.5 inches
    Item Weight0.50 Pounds
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12554314
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1997-1999 GMC C15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX
    1997-2000 GMC C25008 Cyl 5.0L, 8 Cyl 5.7LC2500 CREW CAB, C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1997-2000 GMC C35008 Cyl 5.7LC3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 CREW CAB LONG WHEELBASE, C3500 CREW CAB SHORT WHEELBASE, C3500 EXTENDED CAB, C3500 REGULAR CAB, K2500 EXTENDED CAB STANDARD BOX
    1996 GMC G35008 Cyl 5.7L1 TON CARGO CLASSIC, 1 TON COMMERCIAL/RV CLASSIC, 1 TON PASSENGER CLASSIC
    1996-1998 GMC Jimmy6 Cyl 4.3L2 DOOR, 4 DOOR
    1997-1999 GMC K15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX
    1997-2000 GMC K25008 Cyl 5.0L, 8 Cyl 5.7LK2500 CREW CAB, K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB
    1997-2000 GMC K35008 Cyl 5.7LK3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 CREW CAB LONG WHEELBASE, K3500 CREW CAB SHORT WHEELBASE, K3500 EXTENDED CAB, K3500 REGULAR CAB
    1997-1998 GMC Safari6 Cyl 4.3LVAN SAFARI
    1996-2002 GMC Savana6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE SAVANA, 1 TON PASSENGER, 1/2 TON CARGO, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA
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  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12554314 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How should the old Crankshaft Seal be removed from the rear cover for the 2002 Chevrolet Express? Posted by Tasha H.
    A:
    Carefully pry the oil seal from the rear cover using a screwdriver, ensuring not to nick or scratch the crankshaft or the seal bore. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Mar 07, 2026
    Q:
    How should the new Crankshaft Seal be prepared before installation for the 1997 Chevrolet Astro? Posted by Verified Customer
    A:
    Apply a light coat of engine oil or multi-purpose grease to the outer edge of the new seal and lubricate the seal lip with moly-base grease. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Apr 05, 2025

Genuine GM Part 12554314, the Right Choice

To ensure reliability, purchase GM part # 12554314 Main Seal. It is sometimes referred to as GMC Crankshaft Seal. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific GMC Sierra, Suburban, Yukon models.

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