This is a crankshaft rear oil seal, designed to prevent engine oil from leaking out of the rear of the crankshaft where it meets the flywheel. Manufactured to precise Volvo and Mack specifications, it provides a durable seal superior to a worn or hardened original seal. Operators may observe oil dripping from the rear of the engine, near the transmission, or a persistent oil smell if this seal fails.
Always verify with serial number before ordering.
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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 common symptom is visible oil leakage from the rear of the engine, often noticed on the transmission bell housing. If left unaddressed, the oil leak can lead to dangerously low oil levels, potentially causing severe engine damage. Significant oil loss can also create a fire hazard.
Carefully inspect the crankshaft sealing surface for any nicks or damage before installing the new seal. Ensure the new seal is installed perfectly square to avoid premature failure.
Inspect the crankshaft rear main bearing and flywheel for wear or damage when replacing the crankshaft rear oil seal.