070-251-235 Exhaust to Heater Box Gasket - VW Beetle Super Beetle Bus

Exhaust to Heater Box Gasket – 070-251-235

The 070-251-235 is a specialized gasket designed to create a gas-tight seal between the exhaust system and the heater boxes. This is particularly critical for fuel-injected models, where exhaust leaks can interfere with oxygen sensor readings and engine performance. It is a crush-style gasket made from temperature-resistant materials to handle the extreme heat of the exhaust stream.

Replacing these gaskets is a standard part of any heater box or exhaust system service. A leaking gasket here not only causes noise but can also allow exhaust fumes to enter the fresh air heating system, posing a safety risk to the vehicle's occupants.

Detailed Vehicle Compatibility

VW Beetle (Standard):

• 1975, 1976, 1977

VW Super Beetle:

• 1975, 1976, 1977, 1978, 1979

VW Bus:

• 1975, 1976, 1977, 1978, 1979

Product Highlights & Features

• Heat Resistant Construction: Designed to withstand the constant thermal expansion and contraction cycles of the air-cooled VW exhaust system.

• Fuel Injection Specific: Sized correctly for the unique exhaust plumbing found on 1975–1979 L-Jetronic fuel-injected engines.

• Critical Safety Component: Ensures that carbon monoxide and exhaust gases are kept out of the heater boxes and the vehicle cabin.

Technical Specifications

• Part Number: 070-251-235

• Application: Exhaust Pipe to Heater Box

• Material: Multi-layer composite or soft metal crush-style

• Engine Fitment: 1600cc (Type 1) and 1800cc/2000cc (Type 4) Fuel Injected

Installation & Maintenance Tips

• Surface Cleaning: Use a scraper or wire brush to remove all traces of the old gasket and carbon buildup from the heater box and exhaust flanges. A clean surface is mandatory for a proper seal.

• Hardware Replacement: Because exhaust hardware often becomes brittle and corroded, it is highly recommended to use new copper-plated nuts and studs when installing these gaskets.

• Torque Check: After a few heat cycles (driving the car for a day or two), check the tightness of the exhaust nuts, as the gaskets may compress slightly and require a final snugging.

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