Parts for your 2022 Subaru Impreza-Oil seals

2022 Subaru Impreza Oil Seals: What They Do and When to Replace Them

Oil seals are absolutely used on the 2022 Subaru Impreza. Technical documentation backs this up: the Subaru Impreza (2017–2023 GK/GT) Service Manual details crankshaft and camshaft oil seals in the engine and multiple shaft and side seals in the Lineartronic CVT with integrated front differential. The Subaru Genuine Parts Catalogue likewise lists engine front and rear crankshaft seals, camshaft seals, oil pump seals, and front differential/axle shaft oil seals for the FB20/TR580 driveline. These sources make it clear oil seals are relevant components on this model.

For this Impreza, oil seals keep engine and transmission fluids where they belong while allowing rotating shafts to spin freely. Think crankshaft front and rear main seals, camshaft seals behind the timing cover, and the CVT’s front differential side seals where the driveshafts plug in. When they’re healthy, there’s no weeping, no burning smell on the exhaust, and no drips on the driveway.

They’re not a routine “replace every X km” item, they’re serviced on condition. Still, a smart owner or workshop keeps an eye out during regular services. On a 2022 Impreza, that means a visual check for fresh oil traces around the timing cover, sump edge, and bellhousing, and for gear oil weeping at the CVT case/axle interfaces. Any unexplained oil consumption or dampness warrants a closer look.

• Common tell-tales: oil spots under the car, misting on the front of the engine, burning-oil whiff after a drive, or gear oil smell near the transmission.
• Helpful tips: a blocked or weak PCV system can push seals out or make them leak—make sure crankcase ventilation is working.
• Best practice: use quality (preferably genuine) seals, check shaft surfaces for grooves, install square and to the specified depth, and don’t smear sealant on the sealing lip.

Replacement effort varies. Front crank and camshaft seals on the FB20 usually require front cover and accessory removal, with the timing chain setup, it’s a decent half-day job in capable hands. A rear main seal involves separating the transmission from the engine—often bundled with a clutch job on manuals, but the 2022 Impreza is typically CVT, so expect more labour. CVT front diff/axle seals are mid-level jobs, the axle is withdrawn, the old seal is pulled, and a new one is pressed in, then fluid level is set as per procedure.

Left alone, a small seep can turn into a proper leak, contaminating belts or clutches and lowering fluid levels. Catching it early keeps the Impreza tidy, safe, and reliable.

Popular questions about 2022 Subaru Impreza oil seals

Does the 2022 Impreza have a timing belt or chain, and does that affect oil seal replacement?

It uses a timing chain on the FB20 engine. That means front crank and cam seal access generally involves removing accessory drives and the front covers, making it more involved than some belt-driven engines. A competent workshop will quote time accordingly and reseal any disturbed covers properly.

How often should oil seals be replaced on a 2022 Impreza?

There’s no set interval—they’re replaced when they leak. Many run well past 120,000–200,000 km without issue, but age, heat, and crankcase pressure can change that. Regular inspections and fixing PCV issues early help seals last.

What are the signs of a leaking rear main or CVT/front diff side seal?

Rear main leaks often show as oil dampness at the engine–transmission join and spots on the driveway, sometimes with a slight burning smell after parking. A CVT/front diff side seal leak typically leaves gear oil around the axle entry points, with a sulphur-like gear oil smell and a slow drop in CVT/diff fluid level if left unchecked.