PORSCHE Boxster S Catalytic converter replacement Cost
2002–2005 · Engine, Fuel & Emissions system
Typical range
$666–$10.3k
Parts + labour
Labour hours
1–6h
At a typical garage
The catalytic converter reduces harmful exhaust gases by converting them to less toxic compounds. A failing cat triggers a P0420 check engine light, may produce a sulphur smell and can reduce engine power. PORSCHE Boxster S catalytic converter replacement costs $666–$10314—one of the more expensive emission-related repairs.
Typical parts included
- Catalytic converter
What affects the price
- OEM vs direct-fit aftermarket vs universal (OEM recommended for emissions compliance)
- Whether the vehicle has multiple catalytic converters (common on V6/V8)
- Whether upstream oxygen sensors need replacing at the same time
Common questions
How long does this repair take?
Catalytic converter replacement on a PORSCHE Boxster S typically takes 1–6 hours at a garage.
How often does this need to be done?
For a PORSCHE Boxster S, this is typically needed catalytic converters are replaced on failure; typical lifespan is 100,000–150,000 miles with good maintenance.
Other engine, fuel & emissions system repairs on the PORSCHE Boxster S
- ABS hydraulic unit replacement$491–$912
- ABS sensor replacement$202–$375
- ABS system bleeding$162–$300
- AC compressor clutch replacement$404–$751
- AC compressor replacement$433–$804
Catalytic converter replacement cost on similar cars
- MERCEDES BENZ E-Klasse Cabriolet and predecessors$368–$683
- BMW Z4 Roadster$368–$683
- SAAB 9-3 Convertible$368–$683
- AUDI A4 Cabriolet$368–$683
- CHEVROLET Camaro Convertible$441–$819
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