Dorman

Dorman 02602 Engine Timing Cover Plug

Brand Dorman 02602
Describe Type Quick-seal®
Material Rubber
Package Contents 1 Expansion Plug
Fits GMC and Pontiac · 4 vehicles

OE-style fit. Matches the original part's fit and function for dependable sealing.

Rubber construction. Provides a flexible seal for reliable engine performance.

Quick-seal design. Engineered for fast, secure installation.

Cross-references 026023 for the same application. See all 1.

$24.35Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Select your vehicle to confirm fitment
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Step 2 — Quantity
Order total $24.35
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Dorman 02602 Engine Timing Cover Plug

Dorman 02602 is a rubber engine expansion plug built to match the fit and function of the original timing cover plug on specified vehicles. Its Quick-Seal design and quality material construction support a reliable seal in the engine timing cover area.

Key Features

  • Rubber construction for a flexible sealing fit
  • Quick-Seal design for straightforward sealing performance
  • Engineered to match the original part’s fit and function
  • Direct replacement style for specified Pontiac applications
  • Part number 02602 for easy identification

Detailed Description

This engine timing cover plug is made for classic Pontiac applications that require a precise sealing plug in the timing cover. Compatible with 1955-1957 Pontiac Catalina and 1957 Pontiac Bonneville, Dorman 02602 is built to restore the sealing surface where the original plug has aged, hardened, or deteriorated. The rubber material helps form a secure seal, while the Quick-Seal design supports a clean OE-style replacement for these Pontiac engine applications. If you are searching for a 1955-1957 Pontiac Catalina engine timing cover plug or a 1957 Pontiac Bonneville timing cover plug, part number 02602 is the relevant replacement to verify.

This part cross-references 026023 for the same application.

Common Problems It Can Solve

  • Oil seepage at the engine timing cover plug area
  • Leaks caused by a cracked or hardened original expansion plug
  • Poor sealing from an aged rubber plug
  • Service issues during timing cover maintenance or engine resealing
  • Replacement needs on classic Pontiac engine assemblies

Installation Notes and Tips

Confirm the timing cover opening size and vehicle application before installation. Clean the bore thoroughly so the rubber plug seats evenly, and inspect the surrounding cover for corrosion, distortion, or damage that could affect sealing. For best results, install on a clean, dry surface and verify proper fit before final engine assembly.

Quality Assurance

Dorman manufactures this expansion plug to match original part fit and function on specified vehicles, using quality materials for dependable performance. Part number 02602 is intended for direct application verification against the listed Pontiac fitments.

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1957PontiacBonnevilleN/A1 Required Engine Timing Cover Plug, Quick Seal Rubber, 1.375 In. - 1.50 In. (34 mm - 38 mm), Package Quantity: 1, Carded
1957PontiacCatalinaN/A1 Required Engine Timing Cover Plug, Quick Seal Rubber, 1.375 In. - 1.50 In. (34 mm - 38 mm), Package Quantity: 1, Carded
1956PontiacCatalinaN/A1 Required Engine Timing Cover Plug, Quick Seal Rubber, 1.375 In. - 1.50 In. (34 mm - 38 mm), Package Quantity: 1, Carded
1955PontiacCatalinaN/A1 Required Engine Timing Cover Plug, Quick Seal Rubber, 1.375 In. - 1.50 In. (34 mm - 38 mm), Package Quantity: 1, Carded
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
026023