Make sure this part fits

GM 12511890 Seal Kit,Valve Stem Oil

1982-1996 GM

Customer Questions & Expert Answers (3)
12511890 GM Seal Kit,Valve Stem Oil Product Photo 1 of 7
  • Part Description
    SEAL KIT, Engine Valve
  • Replaces
    14033546, 10132715
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12511890
    Part DescriptionSEAL KIT, Engine Valve
    Other NamesValve Seal, Valve Seal Kit
    Item Dimensions5.8 x 2.3 x 1.3 inches
    Item Weight0.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces14033546, 10132715
    ManufacturerGeneral Motors
    SKU12511890
    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
    1991-1993 Buick Roadmaster8 Cyl 5.0L, 8 Cyl 5.7L4 DOOR, LIMITED SEDAN, STATION WAGON
    1991-1992 Cadillac Brougham8 Cyl 5.0LBROUGHAM 4 DOOR
    1993 Cadillac Fleetwood8 Cyl 5.7LBROUGHAM 4 DOOR
    1985-1995 Chevrolet Astro6 Cyl 4.3LVAN ASTRO
    1992-1995, 1985-1988 Chevrolet Blazer6 Cyl 4.3L, 8 Cyl 5.7L1/2 TON, 2 DOOR, 4 DOOR
    1985-1986 Chevrolet C106 Cyl 4.3LREGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1990-1995 Chevrolet 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
    1985-1986 Chevrolet C206 Cyl 4.3LCREW CAB, REGULAR CAB
    1990-1995 Chevrolet C25006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7LC2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB
    1985-1986 Chevrolet C30CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
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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 12511890 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What can be used if compressed air is not available for the 1990 Chevrolet Astro, particularly regarding the Valve Stem Oil Seal? Posted by Ford C.
    A:
    A length of nylon rope can be used to prevent the valves from falling into the cylinder if compressed air isn't available. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Raul / Mar 15, 2024
    Q:
    What tools and equipment do you need to replace broken valve springs or defective Valve Stem Oil Seals without removing the cylinder head for the 1994 Chevrolet S10? Posted by Tori R.
    A:
    You will need specific tools and a compressed air source. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Jan 28, 2026

Genuine GM Part 12511890, the Right Choice

To ensure reliability, purchase GM part # 12511890 Seal Kit,Valve Stem Oil. It is sometimes referred to as GM Valve Stem Oil 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 Buick Roadmaster models. It fits Cadillac Brougham, Fleetwood. It also fits Chevrolet Blazer, Camaro, Tahoe. This also fits GMC C2500, Suburban, Yukon.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 12511890 Seal Kit,Valve Stem Oil. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed GMC parts information, click here.

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