Dorman - Autograde Engine Cylinder Head Plug
Fits Buick, Oldsmobile, Pontiac & more — 38 vehicle applications
EXPANSION PLUG STEEL
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- Canadian Owned

Dorman - Autograde 555-020 Vehicle Fitment
Fits 38 vehiclesThis Dorman - Autograde Engine Cylinder Head Plug fits Buick, Oldsmobile, Pontiac, Chevrolet and 1 more makes vehicles.
Fits 1975-1988 Buick Century; 1985-1988 Buick Electra; 1976-1988 Buick LeSabre; 1988 Buick Reatta; 1975-1987 Buick Regal; 1979-1988 Buick Riviera; 1975-1980 Buick Skyhawk; 1975-1979 Buick Skylark. Plus 30 more models listed below.
1986-1988 Oldsmobile Toronado
1985-1988 Oldsmobile 98
1984-1988 Oldsmobile Cutlass Ciera
1980-1988 Oldsmobile Cutlass Cruiser
1978-1987 Oldsmobile Cutlass Salon
1978-1984 Oldsmobile Cutlass Calais
1977-1988 Oldsmobile Delta 88
1977-1987 Oldsmobile Cutlass Supreme
1977-1981 Oldsmobile Cutlass
1977-1979 Oldsmobile Omega
1975-1980 Oldsmobile Starfire
Dorman - Autograde 555-020 Specifications
- Material
- Steel
- Material
- Acero
- Closed End Diameter
- 1.12 in
- Contenidos del paquete
- Tapón tipo tapa
- Diámetro con extremo abierto (in)
- 1.135 In.
- Diámetro con extremo cerrado
- 1.12 In
Dorman - Autograde 555-020 Interchange Numbers
This part replaces and is compatible with the following part numbers
| Type | Brand | Part Number |
|---|---|---|
| Aftermarket | Pioneer | 80194000 |
Dorman - Autograde 555-020 Product Description
This engine cylinder head plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.
Key Features
- Direct replacement - this engine cylinder head plug matches the fit and function of the factory part on specified years, makes and models
- Ideal solution - this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
- Durable construction - this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
About Dorman - Autograde
Shop Dorman - Autograde Engine Cylinder Head Plug at Autrex with vehicle fitment details, current pricing, and checkout options for the Dorman - Autograde 555-020. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Seller reviews
What customers say about buying from Autrex — service, shipping and support. These are reviews of the store, not of this specific part.
- July 2026
Couldn't locate the parts for 2013 Civic Si Sedan. Front struts are an Anomaly found them at Capital autoparts. Great service and great parts. Shipping by CanPar sucked however
- July 2026
Great customer service. I placed an order for wheels and tires and it was an easy transaction. Make sure you read the expected lead times for delivery however. I misread that part, but the order did arrive in the correct timeframe stated. The Hostile rims and Hercules tires look great. Thank you
- July 2026
Awesome
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Frequently Asked Questions — Dorman - Autograde 555-020
What vehicles does the Dorman - Autograde 555-020 fit?
The Dorman - Autograde 555-020 fits 38 vehicle applications including 1976-1988 Buick LeSabre, 1975-1988 Buick Century, 1979-1988 Buick Riviera, 1985-1988 Buick Electra, 1988 Buick Reatta and 33 more. Check the full fitment list above to confirm your vehicle.
What parts does the Dorman - Autograde 555-020 replace?
The Dorman - Autograde 555-020 is a direct replacement for Pioneer 80194000. See the full interchange list for all compatible replacements.
How do I confirm the Dorman - Autograde 555-020 fits my vehicle?
Select your year, make, model and engine in the vehicle selector on this page to see a fit or does-not-fit result for the Dorman - Autograde 555-020. If your vehicle has options that change the part (for example brake package or axle), the result lists the questions to check. A parts specialist can also confirm fitment at 1-866-461-2787.
What are the shipping options for the Dorman - Autograde 555-020?
Shipping options for the Dorman - Autograde 555-020 are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
How much does the Dorman - Autograde 555-020 cost?
The Dorman - Autograde 555-020 is currently listed at $22.00 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Is the Dorman - Autograde Engine Cylinder Head Plug a direct fit replacement?
Fit depends on the vehicle and its configuration. Select your vehicle and review the fitment result for the Dorman - Autograde Engine Cylinder Head Plug before ordering.