Porsche Macan S 2022 Catalytic Converter 95B254850 G

For the 2022 Porsche Macan S (95B.3), the catalytic converter with part number 95B254850G (often formatted as 95B-254-850-G) is a primary emissions component for the updated 2.9L Twin-Turbo V6 engine. In the 2026 market, this part is highly valued as it is specific to the “Facelift II” models (2022–2024), where the Macan S adopted the higher-output engine previously reserved for the GTS and Turbo.

1. Technical Specifications

The 2022 Macan S exhaust system is significantly more complex than earlier models due to stricter emissions standards (Euro 6d-ISC-FCM / EPA Tier 3).

• Placement: This part number typically refers to the Downpipe and Catalytic Converter Assembly.

• Engine Compatibility: Exclusively for the 2.9L V6 ($375\text{ hp}$ / $380\text{ PS}$).

• Construction: High-grade stainless steel housing with a ceramic or metallic honeycomb substrate coated in precious metals (Platinum, Palladium, Rhodium).

• Sensor Ports: Features threaded bungs for the Upstream (pre-cat) and Downstream (post-cat) Oxygen ($\text{O}_2$) sensors.

2. Part Number Suffixes & Revisions

Porsche frequently updates catalytic converter part numbers to reflect changes in the internal coating or supplier.

• 95B254850G: The standard production part for the 2022 model year.

• Alternative/Superseded: You may also see 95B254300D (Left) or 95B254350D/DX (Right). Always verify your specific VIN, as “Left” and “Right” sides are mirror images and are not interchangeable.

3. 2026 Market Value & Core Charge

As of 2026, the cost of OEM Porsche catalytic converters remains high due to the fluctuating price of the precious metals inside.

4. Symptoms of Failure

If you are looking for this part because of a Check Engine Light (CEL), watch for these common 95B.3 codes:

• P0420 / P0430: Catalyst System Efficiency Below Threshold.

• Rattling Sound: Indicates the internal ceramic brick has broken loose.

• Sulfur Smell: “Rotten egg” odor from the exhaust.

• Performance Loss: A clogged cat will cause the turbos to struggle, resulting in a “Limp Mode” or reduced boost.

5. Installation Notes

• The “Heat Shield” Trap: The 2.9L engine is tucked tightly into the engine bay. Replacing the catalytic converters often requires removing the engine’s heat shielding and can be a 4–6 hour job.

• Gaskets & Clamps: Never reuse the V-band clamps or the metal crush gaskets.

  • Gasket P/N: 95811111320 (Turbo to Cat).

• Software: In some regions, replacing a catalytic converter on a 2022+ model may require a PIWIS III adaptation to reset the $\text{O}_2$ sensor learning values.