4136140021 Toyota WASHER, FRONT AXLE DIFFERENTIAL SIDE GEAR THRUST, Price: 13.03$, Weight: 0.029kg

Front diff side gear thrust shim ⚙️

This precision shim sits behind the side gear in the front differential. It sets end-play, keeps the gear face aligned, and spreads load so torque transfers smoothly. Designed for Toyota front differential assemblies, it’s made from hardened steel with exact thickness for correct preload and quiet operation.

Why your vehicle needs it

Without a stable thrust surface, the side gear rocks, bearings work harder, and the ring–pinion can go out of mesh. This shim keeps clearances in spec, reduces noise, and protects expensive gears and bearings.

How it works

Installed between the carrier and side gear, it regulates axial movement. Under acceleration, the gear thrusts against the shim; the flat, wear‑resistant face absorbs friction and maintains an oil film for smooth rotation and long life.

When it fails ⚠️

Clunk on take‑off, whining on coast, metal sparkle in diff oil, uneven gear wear, and excessive axle shaft play. Driving on can chip spider gears and pit the ring & pinion. Replace in pairs, lube with gear oil, and verify end‑play with a feeler gauge ✅.

Compatibility

• Century
• Hiace
• Hilux
• Toyoace