ROLLS ROYCE PHANTOM MK7 VII 7 catalytic converter kit

For the Rolls-Royce Phantom VII (MK7/RR1), the catalytic converter system is a dual-bank configuration for the 6.75L V12 engine. Because the Phantom VII spans a long production era (2003–2017), the “kit” varies slightly between the early models and the later Series II updates.

1. Core Component Identification

The Phantom VII uses two primary (engine-close) catalytic converters and two secondary units. In 2026, original parts are typically sold per bank rather than as a single “box kit.”

• Used/Recycled Market: A tested, used genuine catalyst (Part No. 7557918) currently averages €2,000 ($2,150 USD) in the European and UAE markets.

2. The “Installation Kit” (Hardware)

Replacing these units requires a specific hardware set because the extreme heat of the V12 often fuses the original bolts. A complete installation kit should include:

• Manifold Gaskets: Two metal-crush gaskets for the inlet.

• Copper-Plated Hex Nuts: (Part No. 18107523805) — Rolls-Royce uses M8 copper nuts to prevent future seizing.

• Torca Clamps: (Part No. 18307614135) — Required to join the catalyst to the center muffler section.

3. Technical Challenges & 2026 Regulations

• Euro 6 Compliance: While the Phantom VII was originally Euro 4/5, many 2026 replacement parts (like those from BM Catalysts or Walker) are now cross-certified for Euro 6 standards to meet modern low-emission zone requirements.

• V12 Misfire Sensitivity: The Phantom’s engine management is hypersensitive. If you use a “Universal” catalytic converter instead of a “Direct-Fit” unit, the cell density (CPSI) may differ, causing a permanent “Efficiency Below Threshold” (P0420) light that cannot be cleared.

• The “SAT” Factor: Like the Ghost, the Phantom’s Satellite Aided Transmission relies on engine load data. Clogged or incorrect catalysts can alter backpressure, leading to “clunky” gear shifts as the car miscalculates the required torque.

4. Summary of Costs (2026)

If you are performing a full bank-to-bank replacement:

• OEM Parts Total: Approx. (including sensors and hardware).

• Labor: 4–6 hours. On the Phantom VII, access to the upper manifold bolts is notoriously tight and often requires removing the heat shields and lowering the steering rack partially.

• at a specialized independent shop.