Parts for your 2006 Toyota Crown-Oil seals

2006 Toyota Crown oil seals: what they are, what they do, and when to swap them

Workshop technical references used by pros—Toyota’s Electronic Parts Catalogue for the S180‑series Crown (2003–2008) and the GR‑engine/automatic transmission repair manuals—show the 2006 Toyota Crown is fitted with multiple factory oil seals. These include the crankshaft front and rear (rear main) seals, timing cover and cam area seals, transmission input/output shaft seals, and differential/axle seals. So oilseals absolutely apply to a 2006toyotacrown.

On this model, oil seals keep engine oil, ATF and diff oil where they belong, maintaining lubrication and pressure while keeping dust and water out. Healthy seals also stop oil mist from softening rubber hoses and belts, and they prevent oil getting onto brakes or tyres.

• Fresh drips under the nose suggest front crank or timing cover weep, oil between engine and trans points to a rear main
• A hot, oily whiff after a drive, with haze on the bellhousing or sump, hints at a slow leak
• ATF around the tailshaft housing or greasy inner wheels usually means transmission output or axle seals

There’s no fixed kilometre interval for 2006toyotacrown oilseals—they’re replaced on condition. At each service, it’s smart to check for wetness at the crank pulley, timing cover edges, bellhousing, diff flanges and transmission output. In Aussie and Kiwi climates with heat, dust and stop‑start driving, seals can harden after 150,000–250,000 km, sooner if crankcase pressure is high from a blocked PCV or tired breathers.

• Choose quality OEM or equivalent Viton/NBR seals, lightly oil the lips, and inspect the shaft surfaces for grooves
• Bundle jobs to save labour: front seal during timing cover/water pump work, rear main when the gearbox is out, axle seals with CV/diff service
• Renew companion O‑rings and gaskets, clean bores, and drive the seal in square using the correct tool
• Refill fluids, clean the area, and re‑check for weeps after a week of mixed driving

• Keep oil and ATF at correct levels and change on schedule, old fluid is tough on seals
• Replace a lazy PCV valve and cracked breather hoses to control pressure
• Avoid solvent‑heavy degreasers on rubber and don’t overfill—both shorten seal life

For owners chasing reliable, tidy motoring, treating 2006toyotacrown oilseals as inspect‑and‑replace items during routine servicing is the sensible, cost‑effective call.

Popular questions about 2006toyotacrown oilseals

Does the 2006 Toyota Crown have a timing belt oil seal?

No timing belt here—the S180 Crown runs chain‑driven GR engines. There’s still a front crank seal and sealing around the timing cover, and some variants have cam area seals, so leaks at the front of the engine are still possible and serviceable.

When the front of the engine is open for water pump or timing cover work, it’s a good time to replace the front crank seal and related gaskets to keep it dry for the long haul.

How much does it cost to replace a rear main seal on a 2006 Toyota Crown?

Expect labour to dominate because the transmission needs to come out. As a guide, Australia/NZ workshops often quote roughly AUD/NZD ,850–,1,800 depending on transmission type, model variant and what’s done at the same time (rear main seal, flexplate/driveplate inspection, pilot/torque converter seal, and fresh fluids).

Combining the job with a transmission service or converter seal replacement is common sense and usually saves repeat labour later.

Is it OK to keep driving with a small oil seal leak?

A minor weep can be watched short‑term, but any drip that reaches the clutch, brakes, belts, or exhaust is a safety and reliability risk. Oil on tyres or brake components is a hard no, and ATF loss can quickly damage the transmission.

Top up as needed, clean the area to confirm the source, and book it for repair—small leaks rarely get smaller, and prompt attention prevents bigger bills.