LT 6.3L, Chevy Eng, 1 3/4in Header Flanges
MPI AutomotiveRRP$92.37LT 6.3L, Chevy Eng, 1 3/4in Header Flanges for selected vehicle applications.
View partMHF0901
LT 6.3L, Chevy Eng, 1 7/8in Header Flanges
LT 6.3L, Chevy Eng, 1 7/8in 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
- MHF0901
- Supplier
- MPI Automotive
- Category
- Extractors and headers
- Stock status
- In stock at supplier
The MPI Automotive MHF0901 is a header flange cut for 1⅞in primary tubing, listed for the 6.3L Chevrolet engine. The 1⅞in bore is the point of difference — this is the larger-runner flange, the head-side plate a fabricator welds bigger primaries to when building headers for a higher-output engine.
Why 1⅞in primaries?
Primary bore is an application choice, and the MHF0901 is profiled for 1⅞in tubing. Larger primaries suit a higher-revving, higher-output 6.3L build, giving the engine more room to breathe at the top of the range. As a flange, it's the foundation the header is fabricated from — it sets where and how big the primaries land at the head.
What exactly is a header flange?
It's the laser-cut plate that bolts to the cylinder head and holds the primary tubes in position. The MHF0901 isn't a finished header or a bolt-on system; it's a build component for a fabricator constructing or repairing 1⅞in headers on the 6.3L Chevrolet.
Will it suit my engine?
It's listed for the 6.3L Chevrolet engine. The flange has to match your head's bolt pattern and port spacing, so confirm those details with the workshop before ordering — a 1⅞in flange is only correct if it lands on your ports cleanly.
What does the Illawarra workshop offer here?
Oak Flats Muffler Men can supply this MPI flange and fabricate or repair the headers around it. Bring your 6.3L's head details and primary plan and we'll confirm the 1⅞in flange suits the build before it's ordered.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
Common questions
- What primary size does the MHF0901 take?
- It's cut for 1⅞in primaries — the larger-runner choice suited to a higher-output 6.3L build.
- Is it a finished header?
- No — it's a header flange, a fabrication component welded to primaries during a header build.
- What engine is it listed for?
- The 6.3L Chevrolet engine. Confirm your head pattern matches before ordering.
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.