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Make sure this part fits

GMC 12681665 Plug

1996-2009 GMC

Customer Questions & Expert Answers (2)
12681665 GM Plug Product Photo 1 of 4
12681665 GM Plug Product Photo 1 of 4
12681665 GM Plug Product Photo 2 of 4
12681665 GM Plug Product Photo 3 of 4
12681665 GM Plug Product Photo 4 of 4
12681665 GM Plug Illustration 1 of 1
  • Part Description
    Plug Assembly - Gasoline Engine Ignition
  • Replaced By
    12681664
  • Replaces
    25162555, 12607234, 25315018, 25162556, 19256067, 89017883
  • Manufacturer
    General Motors
Make sure this part fits
$9.90 MSRP: $17.36
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number12681665
    Part DescriptionPlug; Plug Assembly - Gasoline Engine Ignition
    Item Dimensions3.8 x 1.1 x 6.7 inches
    Item Weight1.10 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces25162555, 12607234, 25315018, 25162556, 19256067, 89017883
    ManufacturerGeneral Motors
    SKU12681665
    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
    1996-1999 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
    1996-2000 GMC C25008 Cyl 5.0L, 8 Cyl 5.7LC2500 CREW CAB, C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1996-2000 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
    1996-2001 GMC Jimmy6 Cyl 4.3L2 DOOR, 4 DOOR
    1996-1999 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
    1996-2000 GMC K25008 Cyl 5.0L, 8 Cyl 5.7LK2500 CREW CAB, K2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB
    1996-2000 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
    1996-2005 GMC Safari6 Cyl 4.3LVAN SAFARI
    1996-2009 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
    1999-2009 GMC Sierra6 Cyl 4.3L1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON
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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 12681665 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What are the important steps to consider when replacing Spark Plugs on Pontiac Grand Prix? Posted by Radley D.
    A:
    When replacing spark plugs it's necessary to take note of the different engine models where the spark plugs are located at. Front side of the engine is where the spark plugs are on both 2.2L and 2.5-liter four-cylinder engines, whereas Quad-4 engines have them under a cover between the camshaft covers. The valleys between the camshafts on 3.4L V6 engines contain spark plugs, with three on each cylinder head. Other V6s have three up front and three in back, necessitating often turning of the engine forward for access purposes. Unbolt upper intake manifold to get to right (rear) spark plugs on 3.4L engines . A variety of tools are needed for spark plug replacement including a spark plug socket, extensions, gap gauge, and plug wire removal tool. A special tool is required for removing heat shields from spark plugs in 3800 V6 engines. Use a torque wrench to tighten down the new plugs and always let the engine cool before working on them.To install or reinstall new ones just thread them in by hand and then use a rubber hose for easy installation without any cross threading.Inspect the plug wires and use a twisting motion to attach them to the new plugs one at a time to avoid mix-ups.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Mar 25, 2026

Genuine GM Part 12681665, the Right Choice

To ensure reliability, purchase GM part # 12681665 Plug. It is sometimes referred to as GMC Spark Plug. 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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