
O-ring gearbox M40, M41, M400, M410 for Volvo Amazon Wagon, 1800
PV 444, PV 544, Duett, Amazon, 1800, 140, 164, 240, 260
- Model year:
- 1967–1970
- Engine:
- B18, B20
- Info:
- Gearbox/rear axle: M40
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Oil drips under the gearbox or a whining noise that rises with speed are classic signs of tired seals and worn ball bearings in the four-speed M40 gearbox. This category brings together wear and sealing parts for exactly that job on Volvo 140 and 164, so a rebuild can be done with the right components instead of makeshift fixes.

PV 444, PV 544, Duett, Amazon, 1800, 140, 164, 240, 260

PV 444, Duett, PV 544, Amazon, 1800, 164, 780, S90, S70, C70

PV 444, PV 544, Amazon, 1800, 140, 164, 240, 260, V90, 960, S90, 940, 850, V70, XC70, S70, C70

PV 444, PV 544, Amazon, 1800, 164

PV 544, Duett, Amazon, 1800, 164

PV 444, PV 544, Amazon, 1800, 140, 164, 240, 260, 740, 780, 760, V90, S90, 960, 940, 850

PV 444, Duett, PV 544, Amazon, 1800, 164
PV 444, PV 544, Amazon, 1800, 140, 164
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The group includes seals and gaskets for shaft seals and cover surfaces, ball bearings and rollers for the bearing seats, plus companion flanges, o-rings, copper washers and screws for reassembly. A common check point during disassembly is the seal against the drive flange and universal joint – if it sits hard and dry, the leak often starts there. It's a good idea to replace the copper washers and o-rings at the same time to avoid opening the gearbox again.