Catalytic converter replace, aftermarket direct-fit: how much does it cost?

Q: How much does catalytic converter replace, aftermarket direct-fit cost in New Zealand?

Typically NZ$570–NZ$1,570 including GST at a NZ$120 an hour workshop rate (A$540–A$1,490 in Australia at A$140 an hour).

Typically NZ$570–NZ$1,570 in New Zealand and A$540–A$1,490 in Australia, including GST. Most cars.

	Parts (trade)	Labour	Sublet	Total incl GST
New Zealand	NZ$300–NZ$850	1–2.5 h	—	NZ$570–NZ$1,570
Australia	A$280–A$800	1–2.5 h	—	A$540–A$1,490

Totals use a standard workshop rate of NZ$120 or A$140 an hour and a 25% parts markup, plus GST. Your workshop's rate and parts prices will differ.

What affects the price

Direct-fit bolt-in aftermarket cat. Universal weld-in cats are cheaper but need fabrication time and may not meet ADR / emissions rules. Manifold cats cost and take more.

Other electrical repairs

12 V battery replace, standard flooded (small / medium car)NZ$190–NZ$330
12 V battery replace, standard flooded (SUV / ute / 4WD)NZ$290–NZ$500
12 V battery replace, EFB / AGM start-stop (Japanese / Korean)NZ$340–NZ$710
12 V AGM battery replace with battery registration / coding (European)NZ$440–NZ$830
Alternator replace (small / medium car, petrol)NZ$510–NZ$1,020
Alternator replace (SUV / ute / diesel)NZ$750–NZ$1,560
Alternator replace (European, smart charging)NZ$930–NZ$2,130
Starter motor replace (small / medium car)NZ$500–NZ$970
Starter motor replace (SUV / ute / European)NZ$780–NZ$1,850
A/C evacuate, vacuum test and regas (R134a, older cars)NZ$150–NZ$290

Researched by Credov in October 2026 from NZ and Australian parts suppliers and workshop price guides. Typical ranges, not quotes: ask a workshop for a quote before you rely on a price. All repair costs.