Lamborghini Urus Catalytic Converter Right Left 4M0254252M 4M0254202A

the part numbers 4M0254252M and 4M0254202A refer to the primary Catalytic Converters (downpipes) for the Lamborghini Urus. These are high-performance ceramic or metallic substrate units integrated into the downpipe section immediately following the turbochargers.

Given the Urus uses a $4.0\text{L}$ Twin-Turbo V8, the exhaust system is symmetrical, with one unit dedicated to each cylinder bank.

1. Technical Identification

• Part Number 4M0254252M (Right Side): The catalytic converter for Bank 1 (Cylinders 1-4). This is the “Right” side when sitting in the driver’s seat.

• Part Number 4M0254202A (Left Side): The catalytic converter for Bank 2 (Cylinders 5-8). This is the “Left” side.

• Design: These are “Close-Coupled” catalysts, meaning they are mounted very close to the engine to reach operating temperature (light-off) as quickly as possible for emissions compliance.

• Sensors: Each unit features bungs for the Upstream Oxygen Sensor (pre-cat) and the Downstream Oxygen Sensor (post-cat).

2. 2026 Market Pricing (Estimated USD)

Catalytic converters are among the most expensive mechanical parts on the Urus due to the precious metals (Platinum, Palladium, and Rhodium) inside.