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Catalytic Converter

3033 parts in this category
Image Part Brand Part number Position Availability
MagnaFlow 551092 Catalytic Converter - Front Catalytic Converter
Direct-Fit CALIFORNIA OBDII CONVERTERS
MagnaFlow
 551092 — $1,228.00
In stock
AP Exhaust 912006 Catalytic Converter Catalytic Converter
6GMXT04.3181
AP Exhaust
 912006 — $286.90
In stock
Walker 48353 Catalytic Converter Catalytic Converter
EPA
Walker
 48353 — $614.28
In stock
AP Exhaust 771497 Catalytic Converter - Front Catalytic Converter
9SKXV1.995D1
AP Exhaust
 771497 — $769.87
In stock
AP Exhaust 644223 Catalytic Converter - Front Catalytic Converter
Direct Fit Converter
AP Exhaust
 644223 — $331.43
In stock
MagnaFlow 452029 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS
MagnaFlow
 452029 — $863.00
In stock
MagnaFlow 447192 Catalytic Converter - Front Catalytic Converter
Direct-Fit CALIFORNIA OBDII CONVERTERS
MagnaFlow
 447192 — $995.00
In stock
Davico 18089 Catalytic Converter - Center Catalytic Converter
Exact-Fit Catalytic Converter
Davico
 18089 — $334.16
In stock
Eastern Convertors 20490 Catalytic Converter - Right Catalytic Converter
Direct Fit Converter
Eastern Convertors
 20490 — $386.42
In stock
MagnaFlow 339105 Catalytic Converter - Left or Right Catalytic Converter
2.25in. Universal California Pre-OBDII Catalytic Converter
MagnaFlow
 339105 — $523.00
In stock
Eastern Convertors 20491 Catalytic Converter - Left Catalytic Converter
Direct Fit Converter
Eastern Convertors
 20491 — $386.42
In stock
AP Exhaust 641395 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
AP Exhaust
 641395 — $667.29
In stock
Walker 83187 Catalytic Converter - Front Right Catalytic Converter
CalCat
Walker
 83187 — $418.18
In stock
Walker 84178 Catalytic Converter - Front Catalytic Converter
CalCat
Walker
 84178 — $491.77
In stock
AP Exhaust 770540 Catalytic Converter Catalytic Converter
FVGAV02.0VUC
AP Exhaust
 770540 — $1,351.01
In stock
MagnaFlow 408005 Catalytic Converter - Left or Right Catalytic Converter
2.25in. Universal California OBDII Catalytic Converter
MagnaFlow
 408005 — $345.00
In stock
Davico 17565 Catalytic Converter - Front Catalytic Converter
Direct-Fit Catalytic Converter
Davico
 17565 — $284.70
In stock
MagnaFlow 447196 Catalytic Converter - Front Left Catalytic Converter
Direct-Fit CALIFORNIA OBDII CONVERTERS
MagnaFlow
 447196 — $955.00
In stock
Davico 17351 Catalytic Converter - Front Catalytic Converter
Exact-Fit Catalytic Converter
Davico
 17351 — $268.03
In stock
AP Exhaust 754320 Catalytic Converter Catalytic Converter
7TYXV02.4BEB
AP Exhaust
 754320 — $442.03
In stock
OP Converters OPCC1028 Catalytic Converter with Integrated Exhaust Manifold - Front Right Catalytic Converter with Integrated Exhaust Manifold
OP Converters
 OPCC1028 — $188.56
In stock
Dorman 673-576 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
Dorman
 673-576 — $746.77
In stock
Davico 18534 Catalytic Converter - Center Catalytic Converter
Exact-Fit Catalytic Converter
Davico
 18534 — $522.21
In stock
AP Exhaust 612004 Catalytic Converter - Front or Rear Catalytic Converter
1SKXT2.00LC4
AP Exhaust
 612004 — $155.73
In stock
Eastern Convertors 30619 Catalytic Converter - Left Catalytic Converter
DIRECT FIT
Eastern Convertors
 30619 — $395.67
In stock
MagnaFlow 551144 Catalytic Converter - Right Catalytic Converter
Direct-Fit CALIFORNIA OBDII CONVERTERS
MagnaFlow
 551144 — $1,711.00
In stock
MagnaFlow 452180 Catalytic Converter with Integrated Exhaust Manifold Catalytic Converter with Integrated Exhaust Manifold
Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS
MagnaFlow
 452180 — $780.00
In stock
Dorman 674-048 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
Dorman
 674-048 — $480.68
In stock
MagnaFlow 5531343 Catalytic Converter with Integrated Exhaust Manifold Catalytic Converter with Integrated Exhaust Manifold
Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS
MagnaFlow
 5531343 — $1,111.00
In stock
AP Exhaust 771173 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
GHYXV02.41WE
AP Exhaust
 771173 — $914.56
In stock
Walker 16590 Catalytic Converter - Front Catalytic Converter
EPA
Walker
 16590 — $317.96
In stock
Eastern Convertors 50548 Catalytic Converter - Rear Catalytic Converter
DIRECT FIT
Eastern Convertors
 50548 — $237.98
In stock
AP Exhaust 774016 Catalytic Converter - Front Catalytic Converter
4TYXT03.4VRH
AP Exhaust
 774016 — $514.43
In stock
AP Exhaust 771187 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
CFJXJ02.5PHL
AP Exhaust
 771187 — $700.30
In stock
MagnaFlow 5582740 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS
MagnaFlow
 5582740 — $2,209.00
In stock
AP Exhaust 776135 Catalytic Converter - Left or Right Catalytic Converter
HCRXT03.65P3
AP Exhaust
 776135 — $538.83
In stock
AP Exhaust 770545 Catalytic Converter Catalytic Converter
8HNXV01.5JKC
AP Exhaust
 770545 — $789.71
In stock
Eastern Convertors 30653 Catalytic Converter - Right Catalytic Converter
DIRECT FIT
Eastern Convertors
 30653 — $447.35
In stock
Davico 17353 Catalytic Converter - Front Catalytic Converter
Exact-Fit Catalytic Converter
Davico
 17353 — $207.38
In stock
MagnaFlow 445300 Catalytic Converter Catalytic Converter
3in. Universal California OBDII Catalytic Converter
MagnaFlow
 445300 — $1,147.00
In stock
MagnaFlow 339301 Catalytic Converter Catalytic Converter
3in. Universal California Pre-OBDII Catalytic Converter
MagnaFlow
 339301 — $1,028.00
In stock
MagnaFlow 337085 Catalytic Converter - Front, Front Left or Front Right Catalytic Converter
2.25in. Universal California Pre-OBDII Catalytic Converter
MagnaFlow
 337085 — $321.00
In stock
MagnaFlow 452013 Catalytic Converter with Integrated Exhaust Manifold - Front Catalytic Converter with Integrated Exhaust Manifold
Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS
MagnaFlow
 452013 — $1,374.00
In stock
Eastern Convertors 30585 Catalytic Converter with Integrated Exhaust Manifold - Front Right Catalytic Converter with Integrated Exhaust Manifold
Direct Fit Converter w/ Manifold
Eastern Convertors
 30585 — $424.39
In stock
Eastern Convertors 30584 Catalytic Converter with Integrated Exhaust Manifold - Front Left Catalytic Converter with Integrated Exhaust Manifold
Direct Fit Converter w/ Manifold
Eastern Convertors
 30584 — $326.30
In stock
Davico 17426 Catalytic Converter - Rear Catalytic Converter
Direct-Fit Catalytic Converter
Davico
 17426 — $219.83
In stock
AP Exhaust 642110 Catalytic Converter - Left Catalytic Converter
AP Exhaust
 642110 — $514.76
In stock
Eastern Convertors 41318 Catalytic Converter - Rear Catalytic Converter
DIRECT FIT
Eastern Convertors
 41318 — $194.35
In stock
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Catalytic converters reduce harmful exhaust emissions by converting hydrocarbons, carbon monoxide, and nitrogen oxides into less toxic compounds through chemical reactions over a precious-metal substrate. Most last 100,000–150,000 miles under normal conditions, but contamination from oil burn, coolant leaks, or running rich can destroy the substrate prematurely. This collection covers direct-fit catalytic converters, integrated exhaust manifold-catalytic converter assemblies (common on late-model import and domestic engines), diesel particulate filters (DPFs), and diesel oxidation catalysts (DOCs). When buying, verify EPA or CARB compliance for your state - California and several other states require CARB-Executive Order (EO) certified converters, and installing a non-compliant unit will fail smog inspection. Match by engine displacement, position (front/rear, bank 1/bank 2), and connection type (bolt-on vs. weld-in). OEM units are the safest fit; quality aftermarket brands like MagnaFlow, Walker, and Eastern Catalytic offer solid warranties and legal compliance at lower price points.

Signs you need replacement

  • Check Engine light with P0420 or P0430 codes. These codes indicate catalyst efficiency below threshold on bank 1 or bank 2 - the most direct indicator of a failing converter and the most common reason for replacement.
  • Sulfur or rotten egg smell from the exhaust. A converter struggling to process hydrogen sulfide produces a noticeable sulfur odor, especially during deceleration or after extended idling.
  • Rattling noise from under the vehicle. A broken or collapsed internal substrate rattles noticeably at idle or during cold starts - at this point the converter is past the point of chemical function and can also restrict exhaust flow.
  • Significant power loss and poor acceleration. A clogged converter creates backpressure that chokes exhaust flow, causing sluggish throttle response, reduced top-end power, and in severe cases, stalling at idle.
  • Failed emissions or smog test. High HC or CO readings at the tailpipe, or a failed OBD-II readiness monitor, often trace directly to a converter that's no longer processing efficiently even without a stored code.
  • Excessive heat under the vehicle or discolored converter shell. Bluish or glowing heat discoloration on the converter body signals a misfiring cylinder is sending unburned fuel into the converter, accelerating substrate damage.

Frequently asked questions

  • How long does a catalytic converter typically last, and what shortens its lifespan? Most converters are designed to last 100,000–150,000 miles. Engine misfires, oil consumption, coolant intrusion from a head gasket leak, and extended rich-running conditions are the leading causes of early failure - always diagnose and fix the root cause before installing a replacement or the new unit will fail prematurely.
  • Should I buy OEM or aftermarket, and does brand matter for catalytic converters? OEM converters guarantee fit and legal compliance but typically cost 30–60% more than aftermarket equivalents. For most applications, CARB-certified aftermarket units from MagnaFlow, Walker, or Eastern Catalytic perform comparably. Avoid uncertified "universal" converters for street-driven vehicles - they're non-compliant in emissions-tested states and often use lower precious-metal loading that degrades faster.
  • What's the typical cost to replace a catalytic converter, and what else should I replace at the same time? Parts range from $150–$600 for most passenger vehicles; direct-fit units for trucks or European models can run $800–$1,500+. Labor adds $100–$300 depending on location and accessibility. Replace upstream and downstream oxygen sensors if they're original - contaminated sensors can cause the new converter to read inefficient immediately and trigger the same P0420/P0430 codes.