LT 6.3L, Chevy Eng, 1 7/8in Header Flanges
MPI AutomotiveRRP$92.37LT 6.3L, Chevy Eng, 1 7/8in Header Flanges for selected vehicle applications.
View partMHF0900
LT 6.3L, Chevy Eng, 1 3/4in Header Flanges
LT 6.3L, Chevy Eng, 1 3/4in Header Flanges for selected vehicle applications.
BrandMantaMPI Automotive
Category: Extractors and headers
RRP $92.37 AUD
In stock at supplierAfterpay, Zip Pay & Zip Money available
Part specs
- SKU
- MHF0900
- Supplier
- MPI Automotive
- Category
- Extractors and headers
- Stock status
- In stock at supplier
The MPI Automotive MHF0900 is a header flange machined for 1¾in primary tubing, listed for the 6.3L Chevrolet engine. It's a fabrication component rather than a finished header — the laser-cut head-side plate a builder welds primaries to, with the 1¾in bore being the defining spec.
What is a header flange and what suits 1¾in primaries?
A header flange is the plate that bolts to the cylinder head and locates the primary tubes; the MHF0900 is cut for 1¾in primaries. That bore is the mid-to-small runner choice — it keeps gas speed up for low-down and mid-range response on a street-orientated build, where the 6.3L spends most of its time. It's the foundation a custom header is fabricated from, not a bolt-on system.
Who is this part for?
This is a workshop and fabricator item. You'd reach for the MHF0900 when building or repairing headers for the 6.3L Chevrolet, where you need a correctly profiled head-side flange to weld 1¾in primaries to. It's listed for that engine family; the rest of the header geometry is up to the build.
Will it suit my 6.3L Chevy build?
It's listed for the 6.3L Chevrolet engine. Flange fitment depends on the head pattern, so confirm your exact head and port layout with the workshop before ordering — a flange is only right if the bolt pattern and port spacing match your engine.
What can the Illawarra workshop do with it?
Oak Flats Muffler Men can supply this MPI flange and handle the header fabrication or repair around it. Bring your engine details and primary-tube plan and we'll confirm the 1¾in flange suits your 6.3L before ordering.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
- What primary size is the MHF0900 cut for?
- It's machined for 1¾in primary tubing — the mid-range bore suited to street-orientated response.
- Is this a complete header?
- No — it's a header flange, the head-side plate a fabricator welds primaries to. It's a build component.
- Which engine is it for?
- It's listed for the 6.3L Chevrolet engine. Confirm your head pattern with the workshop.
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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Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.