Dorman 66303 Engine Oil Drain Plug Gasket

Engine Oil Drain Plug Gasket for Ford and Mercury

Dorman 66303 is an engine oil drain plug gasket built to the specified size and standard needed for routine oil change service. It is a nylon rib gasket with an inside diameter of 0.558 in, outside diameter of 0.824 in, and 1.95 thickness, giving you a precise sealing surface for drain plug service on select Ford Escort and Mercury Tracer applications.

Key Features

• Nylon rib construction for drain plug sealing
• Inside diameter: 0.558 in
• Outside diameter: 0.824 in
• Thickness: 1.95
• Gasket thickness: 0.004 in
• Direct replacement style for routine oil service

Detailed Description

This Dorman oil drain plug gasket is made for dependable sealing performance during oil changes on 1991-1996 Ford Escort and 1991-1996 Mercury Tracer models. The part number 66303 is sized to match the drain plug sealing surface, helping maintain a secure seal at the oil pan drain point. This part cross-references Davico Mfg 663036 and F0CZ6734A for the same application.

What It Helps Solve

• Oil seepage at the drain plug after service
• Worn or flattened drain plug gasket sealing surfaces
• Improper sealing from incorrect gasket size
• Recurring drip issues during oil change intervals

Installation Notes and Tips

Install the gasket during an oil change and verify the drain plug and sealing surface are clean before tightening. Use the correct drain plug torque for the vehicle to avoid over-compression of the gasket. Compatible With 1991-1996 Ford Escort and 1991-1996 Mercury Tracer, this gasket is a direct service part for routine maintenance. Dorman 66303 should be matched to the drain plug size and application listed above before installation.

Quality Assurance

Dorman designs these oil drain plug gaskets to specific sizes and standards for reliable replacement at every oil change. The Dorman AutoGrade Oil-Tite product line focuses on service-fit sealing components for maintenance work where accurate dimensions matter.