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When all four air struts on your Range Rover L322 wear out together, replacing one corner at a time burns money. The 4PCS Front Rear Air Suspension Shock Spring Kit covers the whole car in one order: both front struts plus the rear pair, built as direct-fit replacements for the 2002–2012 L322 across all HSE trim levels.

The market context is simple. Global air suspension was valued at $4.5 billion in 2025 and is on track to reach $8.9 billion by 2033 — a 7.63% CAGR. Ford, GM, Toyota, and Tesla are standardizing air suspension across their premium SUV and EV lineups, driving demand for aftermarket solutions that match OEM-level integration quality. This kit was engineered to that standard.

What This Kit Replaces

Match your OEM numbers before ordering — every corner maps to a known reference:

• Front Left: RNB000750, LR032570, RNB501530, RNB500550
• Front Right: RNB000740, LR032563, RNB501520
• Rear pair: RNB000070, LR051702, RNB501350

Once installed, the kit plugs into the L322's Electronic Air Suspension (EAS) ECU and keeps the adaptive damping logic, cross-linking valve blocks, and height sensor calibration routines working as intended. Assemblies mirror OE specifications under the SAE J1939 and SAE J1979 diagnostic frameworks, so you get plug-and-play integration with 2026-compliant OBD-II scan tools.

2026 Diagnostics: What Applies to Your L322

Your L322's EAS ECU talks over CAN-bus 2.0B. Modern bidirectional scan tools read it through backward-compatible ISO 15765-4 transport layers — no special hardware required. The kit is also aligned with updated ISO 14229-1 (UDS) diagnostic protocols, which the 2026 automotive cycle now demands alongside the CAN-bus 3.0 architectures rolling out on new Ford, GM, Toyota, and Tesla SUV platforms.

Technical Specifications

All values below come from the kit's spec sheet. Front and rear differ in damper type, pressure rating, stroke length, and mount pattern.

Build Quality: Materials and Damping

Each strut body pairs high-tensile 6061-T6 aluminum alloy end caps with multi-ply, heat-stabilized rubber bellows rated for continuous operation from -40°C to +120°C. That places the kit where the industry is heading — Ford's F-150 Lightning adaptive air, GM's Silverado EV Air Ride Adaptive, and Tesla's Cybertruck dynamic air all favor lightweight composite-reinforced elastomers over single-ply natural rubber.

The bellows are produced under ISO/TS 16949 quality management with CR (chloroprene) and NBR (nitrile butadiene rubber) composite layering, and they meet SAE J2521 ride-height durability benchmarks.

Inside the front struts, a gas-charged monotube damper with velocity-sensitive valving replicates the OEM Hitachi/BWI damping curve. That curve is what preserves the L322's integrated Terrain Response and Dynamic Stability Control (DSC) calibrations. The rear pair uses a gas-charged twin-tube damper instead.

Hitachi or AMK Compressor? Both Work

The kit is cross-compatible with both compressor generations fitted to the L322 — Hitachi on pre-2010 models, AMK on 2010–2012 builds. Current toolchains can tell them apart during automated EAS calibration routines, so a GAP IIDTool BT v7.0+, Autel MaxiSYS 909, or Snap-on Zeus+ will identify your compressor type on its own.

DTC Mapping: Codes This Kit Interacts With

These are the codes that come up most in L322 air suspension work. Any 2026-compliant ISO 15765-4 OBD-II scan tool with enhanced Land Rover/Jaguar chassis protocols reads all of them.

• C1A13-64 — height sensor plausibility. Calibrate after install.
• C1A18-64 — pressure decrease too slow. Exhaust valve or blocked gallery.
• C1A20-64 — pressure increase too slow. Compressor runtime, not a strut fault.
• C1113-92 — air supply system fault. Valve block or reservoir issue.
• Code 22/23 — reservoir pressure sensor, pre-2010 Hitachi systems.
• Code 32 (0x32) — CAN-bus fault. Inspect wheel-speed sensor harnesses after install.

Installation Notes That Save a Second Trip

Check the wheel-speed harnesses

Code 32 isn't caused by the struts. It flags a CAN-bus communication error between the EAS ECU and other modules — ABS, ECM, IPC. But a pinched wheel speed sensor harness during the swap can inject noise onto the bus. Inspect all four wheel-speed sensor connectors before final assembly. On 2026 platforms, watch for U-codes in the U0100–U02FF range alongside the C1Axx series to isolate the module.

Inspect the height sensors

C1A13-64 points at height sensor plausibility, so check the sensors while the car is lifted. Late L322 builds (2010–2012) use the LR023654 height level sensor — worn sensors or corroded pins drag calibration values out of range fast. If you also service an LR3 Discovery 3 (2005–2009), the 4X front rear air suspension height sensor set covers that platform's corners.

Calibrate ride height properly

Use a 2026-compatible tool — GAP IIDTool BT, Autel, or Snap-on. Targets for the L322 HSE: front 465 ± 3 mm measured hub centre to wheel arch, rear 485 ± 3 mm. Calibrate on a level surface at normal ride height. Then cycle through every height mode — Access, Normal, Off-Road — three times to purge residual air from the valve block galleries.

Service Life and Cost Math

Expect 4–6 years or 50,000–70,000 miles under normal driving conditions. That window lines up with the 2026–2030 L322 aftermarket support lifecycle. With the platform now 14+ years out of production, this period is the critical replacement cycle for original factory struts.

The price gap settles the argument for most owners. A single dealer-sourced OEM strut — RNB000750 — now exceeds $1,100 per corner in 2026 Land Rover parts pricing, so a full dealer set runs well past $4,400 before labor. The complete aftermarket kit handles all four corners while keeping EAS integration intact.

Order the Kit, Get Support When You Need It

Frequently Asked Questions