Parts for your 2002 Toyota Prius-Oil seals

2002 Toyota Prius oil seals — purpose, care, and when to replace

Oil seals absolutely are used on the 2002 Toyota Prius. Technical references such as the Toyota Repair Manual for the NHW11 (2001–2003) and the Toyota Electronic Parts Catalogue confirm multiple engine and hybrid transaxle oil seals on this model, including crankshaft, camshaft, and drive shaft (axle) seals. They’re there to keep engine oil and transaxle fluid where they belong while keeping grit and moisture out.

On the 1NZ-FXE engine, oil seals prevent leaks at the crankshaft ends and the camshaft, while the hybrid transaxle uses oil seals at the inner CV/drive shafts to retain ATF. If any of these harden, wear, or get nicked during other repairs, they can start weeping or dripping, leading to low fluid levels and mess on the underbody.

• Engine seals: front crankshaft seal, rear main seal, and camshaft seal(s).
• Hybrid transaxle seals: left and right drive shaft (axle) oil seals for the ATF.

They’re not a routine “replace by kilometres” item