Parts for your 2017 Subaru Impreza-Oil seals

2017 Subaru Impreza oil seals — what they do and when to sort them

Oil seals are absolutely used on the 2017 Subaru Impreza. Subaru’s factory service information for the 2017MY Impreza (FB20 engine and TR580 Lineartronic CVT) and the Subaru Electronic Parts Catalogue specify multiple oil seals, including front and rear crankshaft oil seals, front differential/axle (CVT) side oil seals, and rear differential oil seals. That makes oil-seals a relevant service item on this model.

On this Impreza, oil seals keep engine, transmission and diff fluids where they belong, while keeping dust and water out. They sit around rotating shafts and in key housings, using a spring-loaded lip and the right rubber compound to hold pressure and temperature without weeping. When they harden with age or groove their mating surface, leaks start, leading to mess, burnt-oil smells, slipping belts, or in bad cases, contamination of the clutch or CVT.

As part of regular servicing, oil seals aren’t replaced on a fixed interval