This exhaust flex pipe is designed to connect the exhaust manifold to the rest of the exhaust system, absorbing engine vibrations and movement to prevent stress fractures in the exhaust components. Constructed from durable, heat-resistant materials, it offers superior longevity and flexibility compared to a corroded or ruptured original pipe. A failing flex pipe typically manifests as a loud exhaust leak, often described as a 'hissing' or 'puffing' sound, especially noticeable at idle or under acceleration.
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Alternate part numbers that interchange with Volvo 3199065
Fitment: Volvo Trucks: FH12: 1994> 2005 FH16: 1994> 2012 FM12: 1999> 2007
Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The most immediate symptom of a failing exhaust flex pipe is a loud, distinct hissing or puffing noise from the engine area, particularly noticeable at idle. If left unaddressed, the leak can worsen, leading to increased exhaust noise, potential exhaust gas leaks into the cabin, and a reduction in engine performance. Continued operation with a compromised flex pipe risks further damage to the exhaust system and potential exposure to harmful exhaust fumes.
Ensure the mating surfaces on the exhaust manifold and the downstream pipe are perfectly clean and free of rust or carbon buildup before installing the new flex pipe. Do not attempt to weld a cracked flex pipe; it requires replacement to properly absorb vibration.
Inspect the exhaust manifold and the catalytic converter for any signs of damage or excessive heat discoloration when replacing the exhaust flex pipe.