Fluid leakage at the cooling-line connections or a gearbox that runs hot on long drives are common checkpoints on four-cylinder 240s with the B21, B23 or B230. The thread and sealing face on the nipples settle over time, and that is often when oil starts to seep at the screw union.
PV, Duett, Amazon, 1800, 140, 164, 260, 240, 760, 740, 960, 940
PV, Duett, Amazon, 1800, 140, 164, 260, 240, 780, 760, 740, 960, 940
PV, Duett, Amazon, 1800, 140, 164, 260, 240, 780, 760, 740, 960, 940
PV, Duett, Amazon, 1800, 140, 164, 260, 240, 780, 760, 740, 960, 940, 850
PV, Duett, Amazon, 1800, 140, 164, 260, 240, 780, 760, 740, 960, 940
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This category gathers the small parts for the cooling circuit between the gearbox and the radiator. The group includes nipples, washers, screws and screw unions that keep the connections tight and the oil temperature in check. Since the 240 series came with different four-cylinder engines over the years, it pays to check the thread dimension and seal type against the existing part before fitting, so the fit is correct.