The Exhaust Systems Australia HOLDEN-COMMODORE-V8-HEADER-CAT-KIT is a header-and-cat kit listed to fit the Holden Commodore V8. It's a special-order item.
What are headers and what does this kit cover?
Headers, also called extractors, replace the cast factory exhaust manifolds with separate tubular runners from each cylinder. The idea is to let the V8 breathe out with less restriction than the cast manifolds give it. This kit pairs those headers with a catalytic converter section, so the front of the system — manifolds and cat — comes as one matched set for the Commodore. It's a change to the exhaust side of the engine rather than an internal part.
Why does the cat being included matter?
Because the kit includes the catalytic converter, the emissions component stays part of the system rather than being deleted. That makes it a different proposition to a header-only kit, and it means the cat is matched to the headers ahead of it. Road compliance still depends on the correct parts for your specific car, so the workshop confirms the right build before anything is fitted to your Commodore.
Will it suit my Holden Commodore?
It's listed to fit the Holden Commodore V8. The series, diameter and material aren't published in the listing, so the workshop confirms the exact variant and sizing against your car before ordering rather than guessing from the part number. As a special-order item it's brought in to order, so factor that lead time into your timing.
What does fitting involve at our Illawarra workshop?
Oak Flats Muffler Men fits header-and-cat kits like this in-house across the Illawarra. The work means access to drop the factory manifolds, fresh gaskets, and mating the cat section cleanly to the system behind it. Supplied by Exhaust Systems Australia at $1,450.00 AUD as a special order; send your Commodore's details and we'll confirm the fit and book the bay.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
What does the HOLDEN-COMMODORE-V8-HEADER-CAT-KIT fit?
It's listed to fit the Holden Commodore V8. Confirm your exact series and engine with the workshop before ordering.
Does this kit include the catalytic converter?
Yes — it's a header-and-cat kit, so the catalytic converter section comes matched with the headers rather than being a header-only kit.
Is it in stock?
No, it's a special-order item brought in to order. Check the lead time with the workshop when you book.
Fitment support across the Illawarra
Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.Show nearby fitment areasCollapse section
Oak Flats Muffler Men can check this part against supplier specs, part number, image, RRP and vehicle details for customers around Oak Flats, Shellharbour, Wollongong, Dapto, Albion Park, Kiama and the northern suburbs.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.