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Mazdaspeed3 Cat-back exhaust Install Guide
Your Mazdaspeed3
Pick your year to see what fits.
This page covers the US Mazdaspeed3.
+3–10 whp (est.)
Hard$1,050–$1,1002 hrs
Why do it
Better sound and more flow.
Tools you'll need
- Jack and 4 jack stands
- Socket set
- Torque wrench
- Penetrating oil
Starting out? See our budget tool list.
Parts to buy
- COBB SS cat-back 572101 The same exhaust as our video.Fits 2010–2013
Doesn't fit your car (0)
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Steps
Remove the old exhaust
- Undo the bolts and pull out both sections.
Fit the new exhaust
- Hang it and bolt it to the factory pipe.
Line it up
- Adjust the tips and tighten it all.
How to know it worked
- No exhaust leaks at the joints.
- Tips sit even in the bumper.
- Nothing touches the body.
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Safety first
- Park on flat ground, set the parking brake and chock the wheels.
- Never get under a car held up only by a jack. Use jack stands.
- Let the engine and exhaust cool first.
- Disconnect the battery before unplugging electrical parts.
- Wear safety glasses.
- If something doesn't match your car, stop and ask a shop.
Follow your part's instructions and your service manual's torque specs.
Cat-Back Exhaust install guides for other cars