Mahle C30820 Engine Coolant Outlet Gasket

Engine Coolant Outlet Gasket for GM Applications

The Mahle C30820 engine coolant outlet gasket is an OEM-standard sealing solution for cooling system service. Built with paper gasket material, it is intended to restore a secure seal at the coolant outlet and help maintain proper coolant flow integrity on supported Chevrolet, Pontiac, Oldsmobile, Buick, GMC, and Isuzu applications.

Mahle gaskets are used by OEMs and technicians worldwide for dependable sealing performance. The C30820 is a direct-fit style replacement for a wide range of vehicles, including Chevrolet S10, Camaro, Lumina, and Pontiac Grand Prix applications.

Key Features

• Mahle C30820 engine coolant outlet gasket
• OEM Standard item grade for service replacement use
• Paper gasket material for traditional sealing surfaces
• Additional package contents: none
• Fits a broad range of GM and related vehicle applications

Detailed Product Overview

This gasket is used at the engine coolant outlet to create a sealed connection between mating cooling system components. The paper construction supports a precise seal on properly prepared surfaces, making it a practical choice for cooling system repairs on vehicles such as the Chevrolet Lumina, Pontiac Firebird, and GMC S15. The Mahle C30820 is also cross-referenced to FEL-PRO 35258 and General Motors 14079715 for the same application.

For buyers searching by fitment, this part covers long-tail applications such as an engine coolant outlet gasket for 1982-1993 Chevrolet S10, a coolant outlet gasket for 1987-1992 Pontiac Firebird, and a replacement gasket for 1990-1997 Chevrolet Lumina cooling system service.

Common Problems This Part Helps Address

• Coolant seepage at the engine coolant outlet
• Loss of seal after removing the outlet housing
• Coolant odor or visible residue around the gasket joint
• Cooling system leaks caused by worn or compressed gasket material
• Service issues during thermostat housing or outlet maintenance

Installation Notes and Tips

Clean both mating surfaces thoroughly before installation and remove all old gasket material, corrosion, and coolant residue. Verify the outlet and housing surfaces are flat and undamaged, then install the gasket with the correct orientation for the application. Recheck coolant level after service and inspect the joint for leaks once the engine reaches operating temperature.

Quality Assurance

Mahle supplies sealing products used to OEM standards, with gasket designs trusted by technicians and vehicle manufacturers around the globe. The C30820 is built for consistent sealing performance in supported Chevrolet, Pontiac, Oldsmobile, Buick, GMC, and Isuzu applications.