Make sure this part fits

GMC 10118640 Oil Pump Assembly

1986-1993 GMC

Customer Questions & Expert Answers (3)
10118640 GM Oil Pump Assembly Illustration 1 of 1
  • Part Description
    PUMP, Engine Oil Pump
  • 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 Number10118640
    Part DescriptionPUMP, Engine Oil Pump
    Other NamesOil Pump
    Item Dimensions7.0 x 4.4 x 4.6 inches
    Item Weight3.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU10118640
    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
    1992-1993 GMC Jimmy2 DOOR, 4 DOOR
    1986-1990 GMC S156 Cyl 2.8L2 DOOR, PICKUP
    1991-1993 GMC Sonoma6 Cyl 2.8LPICKUP
  • 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 10118640 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What specific parts, including the Oil Pump, should be checked for wear and damage for the 1993 Chevrolet Beretta? Posted by Verified Customer
    A:
    The oil pump drive gear and driven gear should be checked for wear and damage. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Syed / Feb 12, 2024
    Q:
    What is the next step after positioning the Oil Pump for the 1990 Pontiac Firebird? Posted by Verified Customer
    A:
    Install the oil pump-to-rear main bearing cap bolt and tighten it to the specified torque. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Mar 03, 2026

Genuine GM Part 10118640, the Right Choice

To ensure reliability, purchase GM part # 10118640 Oil Pump Assembly. It is sometimes referred to as GMC Oil Pump. 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 Jimmy, S15, Sonoma models.

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