Parts for your 2009 Toyota Mark x-Oil seals

2009 Toyota Mark X oil seals — what they do and when to sort them

Oil seals are absolutely used on the 2009 Toyota Mark X (GRX130 series). Toyota’s factory repair manuals for the 4GR‑FSE and 2GR‑FSE engines, the Toyota Electronic Parts Catalogue, and Aisin automatic transmission service literature all show multiple seals fitted: front crankshaft seal, rear main seal, camshaft seals, transmission input/output shaft seals, and differential/pinion/axle seals. They’re there to keep engine oil and transmission fluid where they should be, and to stop dust and grit sneaking in.

On a Mark X, the front crank seal sits behind the crank pulley in the oil pump cover, the rear main seal lives between engine and gearbox, and the auto runs output shaft and selector shaft seals. Out back, the RWD layout means a tailshaft and rear diff with pinion and side oil seals. These aren’t “service items” with a set interval