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New Online Store! Click Here

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Catalytic Converters - High Flow, Direct Fit

We have teamed up with Magnaflow Performance Exhaust to provide direct fit, high flow replacement catalytic converters for your Northstar car. These direct-fit converters have a 4 bolt laser cut flange fully welded to the 3 inch inlet. These have a 3 inch outlet as well that you can adapt to your existing pipe via reducers or adapters as necessary.

We have moved the ordering page to the new online store! Click Here to go to the new store!

Foot note: These will work with many other GM vehicles including the 3800 powered Pontiacs, Buicks, Oldsmobiles, and Chevrolet cars with the same 4 bolt rectangular flange.

Sorry, we cannot ship this product to California but every other US state and Candian province it is legal for use and emissions compliant.

New Products

  • 2000-2003 PCM Tuning
  • E/K Body Engine Mounts
  • 04-05 PCM Tuning
  • Eagle Forged Rods
  • Vinyl Decals
  • Gasket Sets

PCM Tuning - click here!

Engine Mounts - click here!

Stop Patent Infringement - click here!

Vehicles We Specialize In

Buick Lucerne (V8)
Pontiac Bonneville GXP
Oldsmobile Aurora

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Email: info@northstarperformance.com | We have installers across the USA and Canada

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