Make sure this part fits

GMC 330850 Cover Assembly, Crankcase Front End

1985-1991 GMC

Customer Questions & Expert Answers (3)
330850 GM Cover Assembly, Crankcase Front End Illustration 1 of 1
  • Part Description
    COVER, Engine Front Cover
  • Position
    Front
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number330850
    Part DescriptionCOVER, Engine Front Cover
    Other NamesFront Cover, Timing Cover
    Item Dimensions13.3 x 9.3 x 1.5 inches
    Item Weight2.20 Pounds
    PositionFront
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU330850
    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
    1988-1990, 1985-1986 GMC C1500C1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1988-1990, 1985-1986 GMC C25008 Cyl 7.4LC2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB, CREW CAB, REGULAR CAB
    1988-1990, 1985-1986 GMC C35008 Cyl 7.4LC3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 EXTENDED CAB, C3500 REGULAR CAB, CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
    1988-1991 GMC G15001/2 TON CARGO, 1/2 TON PASSENGER
    1988-1991 GMC G25003/4 TON CARGO, 3/4 TON PASSENGER
    1988-1991 GMC G35008 Cyl 7.4L1 TON CARGO, 1 TON COMMERCIAL/RECREATIONAL VEHICLE, 1 TON PASSENGER
    1985-1991 GMC Jimmy1/2 TON
    1988-1990, 1985-1986 GMC K1500K1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1988-1990, 1985-1986 GMC K2500K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB, REGULAR CAB
    1988-1990, 1985-1986 GMC K35008 Cyl 7.4LCAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, K3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 EXTENDED CAB, K3500 REGULAR CAB, REGULAR CAB
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  • Customer Questions & Expert Answers

    Q:
    Is it correct part number for my vehicle?
    A:
    You can Select Your Vehicle to check if 330850 fits your vehicle.
    Posted and answered by GM Parts Specialist Ed
    Q:
    How do you remove the vibration damper from the crankshaft for the 1990 Chevrolet C1500 when the Timing Cover is in place? Posted by Mouayad A.
    A:
    Most engines use a large bolt threaded into the crankshaft's nose to secure the vibration damper. It should be removed with a puller that exerts force solely on the damper hub to avoid damage. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / May 04, 2022
    Q:
    How do you remove the vibration damper from the crankshaft and the Timing Cover for the 1989 Chevrolet K1500? Posted by Reves C.
    A:
    Most engines use a large bolt threaded into the crankshaft's nose to secure the vibration damper. It should be removed with a puller that exerts force solely on the damper hub to avoid damage. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / May 05, 2025

Genuine GM Part 330850, the Right Choice

To ensure reliability, purchase GM part # 330850 Cover Assembly, Crankcase Front End. It is sometimes referred to as GMC Timing Cover. 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 C2500, K1500, Suburban models.

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