If you want to crank up the horsepower in your Buick Rainier then you need to replace your catalytic converter with high-powered Buick Rainier catalytic converters from AutoAnything. Our Buick Rainier catalytic converters unleash pent up horsepower and improve the performance of your engine.
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Avoid the pollution police and keep your ride in tip-top shape with Magnaflow Catalytic Converters. These 49-state-legal beauties are constructed from stainless steel, chock-full of smog-scrubbin’ precious metals arranged in a high-flow honeycomb pattern, so they boost performance. 5-year, 50,000-mile external warranty; 2-year 25,000-mile internal warranty.
Toss your old OEM catalytic converter and step up with a Direct-Fit Flowmaster High Flow Catalytic Converter. These custom-designed catalytic converters are packed with fume-stripping precious metals and optimized for nearly unrestricted flow. 49-state legal. 25,000-mile emissions, 50,000-mile/5-year casing warranty.
With Kooks Ultra High Performance Green Catalytic Converters, you keep both Ma Nature and your lead foot happy. Available in multiple sizes, these performance catalytic converters use a Flow Thru design to clear away restrictions and crank up the ponies. 2-year EPA warranty.
Plus, our Rainier catalytic converter is custom designed to fit like stock. So, you can bolt on your new Rainier cat converter without any cutting, welding or bending. Just put it on and enjoy the extra power! And, many of our Buick Rainier catalytic converters ship for free!