Exhaust Gasket, Manifold To Downpipe, LHD. Porsche 924 1976-85  ❭  477253115E

Exhaust Gasket, Manifold To Downpipe, LHD. 
The Genuine Porsche Exhaust Gasket 477253115E is a replacement sealing component designed for the connection between the exhaust manifold and downpipe on compatible left-hand-drive (LHD) Porsche applications.

Fits:

• Porsche 924 2.0L 1976-79
• Porsche 924 2.0L 1980-85 

 
Diagram Ref No 11

This gasket creates a gas-tight seal at an important exhaust-system joint, preventing hot exhaust gases from escaping before they continue through the downpipe and the rest of the exhaust system.

Constant exposure to extreme temperatures, exhaust gases and repeated heating and cooling cycles can cause an old gasket to deteriorate, compress or burn through. Replacing a failed gasket helps restore a properly sealed exhaust connection, reduce unwanted exhaust noise and prevent hot gases leaking around the manifold-to-downpipe joint.

What This Product Does:
The exhaust gasket sits between the mating surfaces of the exhaust manifold and downpipe, creating a seal when the components are secured together.

Exhaust gases leave the engine at high temperature and pressure. These gases must remain contained within the exhaust system as they travel away from the engine.

The gasket helps:

• Create a gas-tight manifold-to-downpipe connection
• Prevent exhaust gases escaping through the joint
• Reduce unwanted exhaust noise
• Maintain proper exhaust-system integrity
• Protect surrounding components from escaping hot gases
• Prevent exhaust fumes leaking from the connection
• Maintain a secure seal despite repeated thermal expansion and contraction

Although relatively small, the gasket plays an important role in keeping the exhaust system correctly sealed.

Symptoms Of Wear Or Failure:
A deteriorated manifold-to-downpipe gasket can allow exhaust gases to escape through the connection.

Common symptoms may include:

• Ticking, tapping or blowing noise from the exhaust joint
• Increased exhaust noise
• Hissing or puffing sounds during acceleration
• Exhaust fumes or odour around the engine or underside of the vehicle
• Black soot deposits around the manifold-to-downpipe connection
• Visible signs of exhaust gas leakage
• Reduced exhaust-system sealing
• Noise that becomes more noticeable under load
• Heat damage or discolouration around the leaking joint
• Engine or emissions-related faults where applicable

A small leak may initially only be noticeable when the engine is cold or under acceleration.

Why Replacement Matters:
A leaking exhaust gasket should not be ignored.

Replacing a worn or damaged manifold-to-downpipe gasket helps:

• Restore a properly sealed exhaust connection
• Prevent hot exhaust gases escaping from the joint
• Reduce blowing, ticking and hissing noises
• Prevent soot accumulation around the connection
• Protect nearby components from concentrated exhaust heat
• Reduce the possibility of exhaust fumes entering areas where they should not
• Maintain correct exhaust-system operationRestore a cleaner and quieter exhaust system

A deteriorated gasket can progressively worsen as hot gases erode the sealing area.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

477253115E

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