Parts for your 2012 Subaru Exiga-Oil seals

2012 Subaru Exiga oil seals — purpose, care, and when to replace

Oil seals are absolutely used on the 2012 Subaru Exiga. Technical references back this up: the Subaru Exiga (YA series) Workshop Manual details crankshaft front and rear oil seals and camshaft seals in the Engine section, and axle/differential oil seals in the Transmission/Front Differential sections. Subaru’s FAST parts catalogue for the Exiga lists these components for EJ20 and FB-series engines and the CVT/4EAT drivetrains, with common examples including front crank oil seal (e.g., 806733030), rear crank oil seal (e.g., 806786040), camshaft oil seal (e.g., 806732150), and front differential/axle oil seals (e.g., 806735290). That makes oil seals highly relevant to any servicing plan for a 2012 Exiga.

What do they do? Oil seals keep engine and gearbox oils where they should be—inside—while letting rotating shafts spin freely. On the Exiga, they sit at the crankshaft nose and rear (rear main), each camshaft, and at the transmission/diff where the driveshafts slide in. Healthy seals protect the timing area, clutch or torque converter, and tyres and brakes from oily contamination.

When should an Exiga owner think about them? There’s no fixed kilometre interval, they’re replaced on condition or opportunistically:

• EJ20 models: inspect/replace front crank and cam seals whenever the timing belt is off.
• FB-series models: seals are inspected during front cover or chain-related work.
• Axle/diff seals: replace at the first sign of seepage or when an axle is removed.

Tell-tale signs the Exiga’s seals need attention include light oil misting inside the timing covers, drips from the bellhousing (rear main), burning oil odour on the exhaust, or gearbox/diff oil on the inner edges of the front tyres and underbody near the driveshafts.

Good practice on these boxers is simple: use quality OEM or equivalent FKM/Viton seals, lightly lube the seal lip, check the crank and cam surfaces for grooves, and confirm the PCV/breather system is clear so crankcase pressure doesn’t push oil past new seals. Avoid overfilling engine or transmission oils. If a seal is weeping and the area is already open (timing belt on EJ20, axle out for a CV boot), it’s cost‑effective to replace the seal then and there.

Expect labour to vary: front crank/cam seals are typically done within a timing belt service window, while a rear main seal requires gearbox removal. A tidy, leak‑free Exiga is nicer to live with and helps protect neighbouring components for the long run.

Popular questions about 2012 Subaru Exiga oil seals

How often should oil seals be replaced on a 2012 Subaru Exiga?
There isn’t a strict schedule. They’re replaced when leaking or when access is convenient. On EJ20 models, it’s smart to fit new front crank and cam seals during a timing belt service. Axle and diff seals are done when a leak is found or an axle is removed for other work.

Regular inspections at service time—looking for oil mist, drips, or dampness—go a long way to catching issues early.

Are aftermarket oil seals okay, or should genuine Subaru seals be used?
Genuine is a safe bet, but reputable aftermarket brands using FKM/Viton materials and proper double‑lip designs perform well too. What matters is correct sizing, quality rubber, and proper installation on a clean, smooth shaft surface.

Cheap, unknown seals can harden early, so sticking with known brands or OEM is the sensible choice.

What happens if a rear main seal leaks on a 2012 Exiga?
A rear main leak will leave oil at the bellhousing and under the car. On manuals, oil can contaminate the clutch, on autos/CVTs, it makes a mess around the flexplate/torque converter area. It’s a gearbox‑out job, so most owners act promptly to avoid further complications or a slipping clutch.