Used Exhaust Parts in Australia
Catalytic converters, mufflers, headers, downpipes and full exhaust systems.
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Exhaust parts — frequently asked questions
Are used catalytic converters legal to fit in Australia?
Yes, provided the cat is the correct part for the vehicle, is in working condition and emissions performance is maintained. Cats from later-model donors with low kilometres are the safest used buys. Avoid cats removed from rusty or high-kilometre donors as the catalyst substrate degrades over time.
How much do used cat converters and exhaust systems cost?
Used cats for common cars typically run $150–$500. Full exhaust systems (cat-back) are usually $200–$700 depending on length and condition. Performance and stainless systems sit higher. Always check for rust-through and cracked welds before buying.
Will a used exhaust fit if I'm changing my engine?
Only if the donor exhaust came from the same engine and chassis combination. Engine swaps usually require either the donor's full exhaust or a custom system fabricated to suit. Confirm fitment with the wrecker before assuming a generic same-model exhaust will bolt up.
Are aftermarket exhausts a better choice than used?
For wear items like mufflers and resonators, an aftermarket replacement is often comparable in price to used and comes with a warranty. For OEM cats, headers and downpipes, used genuine is usually the right answer to keep the car emissions-compliant and looking factory.