Air Suspension Compressor Check Valve Repair Kit — Land Rover Discovery 3 / Discovery 4 (L319)
Fix Air Suspension Pressure Loss on Your Discovery 3 or 4 — Rebuild the Compressor Check Valve.
A failed check valve in the Hitachi air suspension compressor on Land Rover Discovery 3 and 4 causes pressure loss, sagging suspension, and compressor overrun as it tries to compensate. This repair kit rebuilds the check valve — restoring proper pressure retention without replacing the entire compressor.
Why Rebuild the Check Valve
- Stops Pressure Loss: A failed check valve allows air to bleed back through the compressor — causing the suspension to sag and the compressor to run continuously.
- Extends Compressor Life: An overrunning compressor burns out prematurely. Fixing the check valve stops the root cause of compressor failure.
- Rebuild, Not Replace: New Hitachi compressors cost $300–$600+. This kit fixes the actual failure point for far less.
Compatible Compressor Numbers
LR023964, LR045251, LR010376, RYG500160, RQQ500016
Vehicle Compatibility
Land Rover Discovery 3 (L319), Land Rover Discovery 4 (L319)
OEM Reference
- RQQ500016
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Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
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