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Fitment Check: Does It Match Your Car?

One platform, four models. If your car is on this list, the match is direct:

• Bentley Continental GT — 2003–2012
• Bentley Continental Flying Spur — 2005–2012
• Bentley Continental GTC — 2006–2012
• Volkswagen Phaeton — 2004–2006

Before ordering, read the numbers stamped on your old unit. This compressor cross-references OEM and Wabco/AMK part numbers 3W0616005A, 3D0616005B, and 4E0616005C, plus 3W0 616 005 B. Match any of them and the Koeep replacement drops straight in.

Need an alternate pump for a Flying Spur or Phaeton job? Compare the 1x Air Suspension Compressor Pump For Continental Flying Spur Volkswagen Phaeton before you order.

OEM vs Koeep: The Spec Matrix

All values verified per SAE J1336 and SAE J2464 test protocols. Koeep peak pressure: 16–18 bar (232–261 PSI), SAE J1336 compliant.

What's Actually Different Inside

Compressor head

Die-cast aluminum alloy (AlSi10Mg), anodized per MIL-A-8625 Type II Class 2. The coating sheds heat faster during long lift cycles and resists corrosion.

Piston seals

The seals move to a PTFE-graphite composite, SAE J200 elastomer classification, rated for continuous 120°C operation. OEM generations used nitrile-butadiene (NBR) rubber that degraded prematurely in high humidity.

Desiccant dryer

The integrated cartridge runs molecular sieve 13X beads (ISO 29464:2024) with dew point suppression to -45°C. That kills moisture-induced valve block seizure — the failure mode documented in NHTSA TSB 05-06-29-001 for D1-platform vehicles. Factory units ran standard silica gel.

Motor and relay

The brushless DC motor uses neodymium-iron-boron (NdFeB) permanent magnets and eliminates carbon brush wear — the primary failure mode of the Wabco Gen I brushed units. Solder joints meet EU RoHS 3 lead-free requirements (Directive 2024/232).

Relay integration supports the VW Group 40A compressor relay (part no. 4H0951253). Flyback diode protection blocks voltage spikes exceeding 16V — the mechanism behind the P0562 low-system-voltage cascade fault.

Fault Codes Worth Scanning Before You Order

Scan first, buy second. This is the DTC map for a failing D1-platform compressor, validated against SAE J2012-DA (2026 revision) and the Bentley/Rolls-Royce/VW enhanced PID databases:

• C10A0–C10A9 — chassis: suspension compressor circuit/performance
• C10A1 — pump motor circuit open
• C10A2 — pump relay short to ground
• C10A3 — compressor over-temperature shutdown
• P2540–P254F — powertrain pressure codes; P2540 (low pressure) is the most frequent cascade trigger on D1 cars
• B1A00–B1AFF — body: suspension control module
• U0114–U0121 — network communication loss, including U0114 (lost communication with the suspension control module)
• P0562 — low system voltage; often a seized compressor drawing excessive amperage

Compressor or Leaking Air Strut? One Test Settles It

How to read the result

• Pressure bleeds off in under 4 hours while the pump runs long cycles (audible 60+ seconds each) — suspect the air spring or strut, not the compressor. If the front-left corner is the culprit, fit the matching Front Left Air Suspension Bag For VW Phaeton, Bentley Continental GT GTC.
• The compressor cycles briefly (under 3 seconds) or will not start with C10A2 stored — the compressor itself is the root cause.

On a VW Phaeton, add one more check: watch the compressor temperature PID via VCDS/VAG-COM. Sustained readings above 110°C mean the pump is about to fail. The PTFE-graphite seals on the Koeep unit are built for exactly this thermal load.

Installation Notes for the 2026 Shop

1. Replace the relay at the same time. Fit a fresh VW/Audi 40A relay (part no. 4H0951253). Pitted contacts sag the voltage, trigger P0562, and shorten the new compressor's life.
2. Leak-down before the swap. Run a full system leak-down test with the VCDS/VAG-COM output test mode to rule out concurrent air spring or valve block faults.
3. Calibrate after install. On 2026 CAN-bus 3.0 diagnostic platforms, clear all learned height adaptations and run the full calibration sequence per the Bentley/VW factory service manual.

Tools, Service Life, and Maintenance

Diagnostic tool compatibility

Full J1979 OBD-II PID compatibility holds across 2026 Autel MaxiSys Ultra, Launch X-431 PAD VII, and Bosch ADS 625X platforms. The CAN transceiver handles CAN 2.0B (11/29-bit identifiers at 500 kbps) and CAN 3.0 FD at up to 5 Mbps, so it works with next-generation scan tools and the VW Group's 2026 ODIS service software.

Service interval

Validated for a 5-year, 60,000-cycle service interval (2026–2030) under normal duty — 4–6 full lift cycles per day. Every unit is tested to SAE J2464 hydrostatic pulse standards at 20-bar proof pressure.

The one wear item

The molecular sieve 13X desiccant cartridge should be replaced every 2 years — calendar mark 2028 for a 2026 install. It comes as a separate service kit. Full warranty and lifecycle documentation lives on the product page.

FAQ: Straight Answers Before You Buy

The questions our support team fields most on this unit, answered with the same numbers used above.