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Crankshaft Volvo B230

Oil leaking to the rear, knocking from the bottom end on cold start, or dropping oil pressure are classic signs that the crank assembly in a B230 is getting tired. Once the engine is out and the block measured, these are the parts that come into play – everything that moves around the crankshaft on the Volvo 740, 760, and 780.

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Piston ring assembly pliers

$ 52.25
$ 55.00
You save 5%$ 2.75
Engine:
B4B, B14A, B16, B18
Engine:
B4B, B14A, B16, B18
Available

OE number

4234

24 av 33

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The group includes pistons and piston ring sets for the correct cylinder dimension, main and rod bearing sets in several undersizes, plus a flexplate for the automatic transmission. There's also a seal and support plate at the rear flywheel end, along with lock rings for the gudgeon pins. These are typical parts you replace together during a thorough engine overhaul rather than one at a time.

A common checkpoint: measure the crank journals and main bearing journals before ordering a bearing set, so the correct undersize is chosen. The rear crankshaft seal is also worth renewing every time while the flywheel is off – it often leaks quietly and first shows up as drops under the car.

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