This Exhaust Systems Australia Armalite/Cemjo header gasket is listed to fit the Toyota HiAce RZH103, RZH113 and RZH125 with the 2.4L 2RZ engine. It is the flange gasket that seals a header or extractor against the cylinder head, sold as a single sealing item.
What is a header gasket and what does it do?
A header gasket sits between the header (or manifold) flange and the cylinder head, sealing the joint so exhaust gas leaves through the runners rather than escaping at the flange. It is a wear item: heat cycling and removal can flatten or split a gasket, so a fresh one goes in whenever the header comes off. On its own it changes nothing about flow or sound; it just keeps the joint gas-tight.
Why is it named for the 2RZ HiAce?
Gaskets are cut to a specific head and port pattern, so this one is listed for the 2.4L 2RZ engine in the HiAce RZH103, RZH113 and RZH125 vans. The Armalite/Cemjo reference is the header line it is matched to. Because port shape decides whether a gasket seals, the application naming matters more here than on a generic part.
Will it suit my HiAce?
It is listed to fit the RZH103, RZH113 and RZH125 HiAce with the 2.4L 2RZ. Gasket fit depends on your exact head and header, so confirm the part against your van with the workshop before ordering rather than going by the model code alone.
What does fitting involve at our Illawarra workshop?
Oak Flats Muffler Men fits headers and replaces their gaskets in-house across the Illawarra. We clean the flange faces, seat the new gasket squarely, and torque the fasteners evenly so the joint seals without leaks. Supplied by Exhaust Systems Australia at $15.50 AUD; tell us your HiAce and header and we will confirm this gasket is the right one.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
What is this part?
A single header (flange) gasket that seals the header against the cylinder head on the 2.4L 2RZ HiAce.
Which HiAce is it listed for?
The RZH103, RZH113 and RZH125 with the 2.4L 2RZ engine. Confirm your exact van with the workshop.
Do I need a new one each time?
A header gasket is a wear item, so a fresh one is fitted whenever the header is removed and refitted.
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.
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TOYOTA LANDCRUISER 100 SERIES UZJ100R WAGON 4.7L 3" STAINLESS STEEL FULL EXHAUST KIT (EXTRACTORS, CATS & CAT-BACK SYSTEM WITH MUFFLER) for 4x4 Exhausts.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.