Catalytic Converter Universal

A catalytic converter is an essential emissions control device, and our universal-fit selection gives you the flexibility to replace a failed converter or upgrade your exhaust system when a vehicle-specific part isn't available. These units are designed for custom fabrication—they don't bolt directly to factory exhaust hangers, so some welding and pipe-fitting is expected. By offering multiple diameters, cell counts, and substrate options, the collection lets you match a converter to your engine's displacement, power level, and local emissions requirements.

  • Inlet/outlet diameter and overall length—match to your exhaust tubing size
  • Cell count and catalyst loading—higher cell counts often improve efficiency; lower counts can support higher flow for performance builds
  • Substrate type—ceramic cores are common for street use, while metallic substrates handle extreme heat and vibration in racing applications
  • Oxygen sensor bung placement—verify whether you need a pre-cat or post-cat sensor port
  • Compliance—confirm that the converter meets the emissions standards in your region before purchase

If you're tackling a custom exhaust, replacing a rusty factory catalyst, or building a track-only setup, a universal converter gives you the core component to finish the job. Check each product listing for exact dimensions, cell count, and included hardware.

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MagnaFlow 334009 stainless steel 3-inch universal catalytic converter with weld-on design and laser fusion seams.
MagnaFlow California Grade CARB Compliant 3in T2 Universal Catalytic Converter Rear - 334009

$219.00

In stock
MagnaFlow 334006 universal catalytic converter featuring a 409 stainless steel body and 2.5 inch inlet and outlet.
MagnaFlow California Grade CARB Universal Catalytic Converter 2.5in 334006 - Select 1980-1994 Chevrolet, Ford, Dodge

$219.00

In stock
MagnaFlow 2 inch universal catalytic converter with stainless steel body and laser fusion welds.
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 2in T2 (Rear) - 334004 - Select 1980-1995 Dodge, Ford, Land Rover

$194.00

In stock
MagnaFlow 3322304 California Grade 2.00 inch universal catalytic converter with spun body and stainless steel finish.
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 2.00in (PC1) - 3322304 - Select 1975-1995 Vehicles

$610.00

In stock
Kooks 3-inch H.O. Green high-output catalytic converter in T304 stainless steel.
Kooks 3in H.O. Green High Output Catalytic Converter (GE-90150)
$735.35 $817.06
-10%
Low in stock
Kooks GREEN Series universal 2.5-inch high-flow catalytic converter with 7.5-inch overall length
Kooks Headers and Exhaust GREEN Series Universal High-Flow Catalyst - 2.5in x 7.5in (GE-90148)
$487.65 $541.83
-10%
Low in stock
Kooks GREEN Series universal 3-inch high-flow catalytic converter with T304 stainless steel casing
Kooks GREEN Series Universal 3in High-Flow Catalytic Converter - 7.5in Length 400 Cell GE-90147
$401.27 $445.86
-10%
In stock

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