JEEP Grand Cherokee Catalytic converter replacement Cost
2003–2005 · Engine, Fuel & Emissions system
Typical range
$637–$1.3k
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. JEEP Grand Cherokee catalytic converter replacement costs $637–$1289—one of the more expensive emission-related repairs.
Warning signs you need this repair
- Check engine light with fault codes P0420 or P0430
- Sulphur or rotten egg smell from the exhaust
- Reduced engine power or noticeably sluggish acceleration
- Rattling noise from underneath the car (broken catalyst substrate)
- Failed emissions test or MOT/inspection failure
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 much does catalytic converter replacement cost on a JEEP Grand Cherokee?
Catalytic converter replacement on a JEEP Grand Cherokee (2003–2005) typically costs between $637 and $1.3k including parts and labour at an independent garage.
What parts are needed for catalytic converter replacement on a JEEP Grand Cherokee?
Common parts for this repair include: Catalytic converter.
How long does catalytic converter replacement take on a JEEP Grand Cherokee?
Catalytic converter replacement on a JEEP Grand Cherokee typically takes 1–6 hours of labour at a garage.
How often does catalytic converter replacement need to be done?
For a JEEP Grand Cherokee, catalytic converter replacement 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 JEEP Grand Cherokee
- ABS hydraulic unit replacement$468–$842
- ABS sensor replacement$193–$347
- ABS system bleeding$154–$277
- AC compressor clutch replacement$385–$693
- AC compressor replacement$413–$743
Catalytic converter replacement cost on similar cars
- LAND ROVER Range Rover$420–$756
- CHEVROLET Tahoe$420–$756
- FORD Expedition$420–$756
- GMC Yukon$420–$756
- HOLDEN Rodeo$385–$693
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