Seat Adjuster Lever Replacement for Defender L663

This is a precision-engineered replacement for the seat adjuster lever on the Land Rover Defender L663. The factory lever — OEM parts LR154136 and LR154138 — is a high-wear mechanism that cracks, breaks off at the pivot, and loses its engagement feel from repeated daily use. Without it, the front seat fore-aft adjustment becomes inaccessible or non-functional. We re-engineered this lever as a direct replacement that restores full seat adjustment with a part built to outlast the original.

✅ AVAILABLE AS DRIVER (LEFT) OR PASSENGER (RIGHT): Order the side you need individually. Replaces LR154136 (Driver/Left) and LR154138 (Passenger/Right) directly.

The Engineering Edge

• High-Rigidity ABS Construction: Moulded from high-rigidity ABS thermoplastic — engineered to withstand the repeated mechanical loading of seat adjustment without cracking or deforming at the pivot zone where the factory lever consistently fails.
• Reinforced Pivot Geometry: The lever arm is designed with additional material thickness at the pivot and engagement points — distributing the adjustment force across a larger cross-section and eliminating the stress concentration that breaks factory units.
• Direct OEM Replacement: Replaces LR154136 and LR154138 with the same mounting geometry and engagement mechanism. No tools beyond basic trim removal — the lever installs in the factory seat track location and functions identically to the original.