Parts for your 1998 Toyota Avensis-Engine mount

1998 Toyota Avensis engine mount — what it does and when to replace it

Engine mounts are absolutely fitted to the 1998 Toyota Avensis (T22). Technical references including the Toyota Electronic Parts Catalogue for T22 models, the Toyota Avensis (T22) workshop/repair manual (engine mounting/insulator section), and the Haynes Toyota Avensis Petrol & Diesel Feb 1998–May 2003 manual all document multiple mounts (typically right-hand/engine-side, left-hand/transmission-side, and front/rear torque mounts). These sources detail the mount “insulators”, brackets, and torque rod used to support and control the transverse engine/gearbox assembly.

On this Avensis, the engine mounts do two jobs: hold the engine and transaxle securely in the bay, and isolate vibration so the cabin feels calm. Some variants use hydraulic mounts that contain fluid to better damp harshness. Over time, rubber hardens or splits and hydraulic units can seep, which lets more vibration and shock through — especially noticeable at idle with the air con on, or when shifting from Drive to Reverse.

As part of routine servicing, it’s smart to inspect the mounts every 10,000–15,000 km or at each service interval. Look for collapsed rubber, cracks, torn bonds, fluid traces on hydraulic mounts, shiny metal where components have been contacting, and stretched or perished torque-rod bushes. A sagging right-hand mount can also change driveline angles and cause thumps on take-off.

• Common signs it’s time: excess vibration at idle, clunks on acceleration or lift-off, engine rocking more than usual, or visible fluid leak from a hydraulic mount.
• Replacement tips: support the engine with an engine support bar or hoist before removing any mount, never rely on a jack alone. Replace like-for-like (hydraulic vs solid) and use OEM-quality hardware.
• Installation best practice: loosely fit all fasteners first, settle the powertrain at normal ride height, then torque to specification from the workshop manual to avoid preloading the rubber.
• Related checks: inspect driveshafts, exhaust flex joint, and subframe fasteners — worn mounts can mask or cause extra stress elsewhere.

There’s no fixed kilometre-based replacement interval — condition and driving style in Aussie and Kiwi stop–start traffic are the big factors. If one mount has failed, consider assessing the full set, as age and heat usually affect them together.

How many engine mounts are on a 1998 Toyota Avensis?

Most T22 Avensis setups use three to four mounts: right-hand (engine side), left-hand (gearbox side), and one or two torque mounts (front and/or rear). Exact layout varies with engine and transmission, but the Toyota repair manual and EPC list each insulator and bracket for the specific variant.

Can worn engine mounts damage other parts?

Yes. Excess engine movement can stress the exhaust flex, driveshafts, and shifter linkages, and can cause harsh thumps that feel like gearbox or diff issues. Fixing the mounts early often saves chasing phantom NVH problems.

Do engine mounts need any regular maintenance?

They’re largely maintenance-free. During services, check for rubber cracking, hydraulic seepage, and loose hardware. Keep oil and coolant leaks under control — fluids degrade rubber and shorten mount life.