FX-303HPC-S

Holden HQ HJ HX HZ 5.0L EFI Conversion 1 3/4in Primaries 4-1, 3in Outlets - Ceramic

Holden HQ HJ HX HZ 5.0L EFI Conversion 1 3/4in Primaries 4-1, 3in Outlets - Ceramic Coated.

BrandMantaMPI Automotive

Category: Extractors and headers

RRP $1737.86 AUD
In stock at supplier
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Generated transparent product-style artwork for FX-303HPC-S Holden HQ HJ HX HZ 5.0L EFI Conversion 1 3/4in Primaries 4-1, 3in Outlets - Ceramic Coated (Silver)

Part specs

SKU
FX-303HPC-S
Supplier
MPI Automotive
Category
Extractors and headers
Vehicle fitment
Holden
Stock status
In stock at supplier

The MPI Automotive FX-303HPC-S is a ceramic-coated extractor set listed to fit the Holden HQ, HJ, HX and HZ with a 5.0L EFI conversion. It runs 1-3/4in primaries into 4-into-1 collectors with 3in outlets, finished in a silver ceramic coating.

What is this EFI-conversion extractor for?

This is a tuned extractor set built for the early Holden HQ-to-HZ body running a 5.0L EFI conversion, where the original manifolds were never designed for the swapped-in engine. It uses 1-3/4in primary pipes feeding 4-into-1 collectors that step out to 3in outlets, so it is sized to suit the converted V8 rather than a stock motor. The silver ceramic coating is applied to manage under-bonnet heat on the pipe surface.

What does the ceramic coating do?

A ceramic coating is a surface finish on the extractor pipes, here in silver. It is a heat-and-corrosion treatment for the steel rather than anything that changes the exhaust path or tune. The FX-303HPC-S is the coated version of this 4-into-1 conversion extractor; an uncoated version of the same design is listed separately.

Will it suit my Holden?

It is listed to fit the Holden HQ, HJ, HX and HZ with a 5.0L EFI conversion. Because this is a conversion part, the exact engine, mounts and steering setup matter for clearance, so confirm your build with the workshop before ordering rather than assuming a standard fit. Its RRP is $1,737.86.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men fits conversion extractors like this through our Illawarra workshop. Conversions need clearance checked against the swapped engine, steering and chassis, plus proper flange sealing, so it is measured bay work, not a quick bolt-on. Send your HQ-HZ build details and we will confirm the FX-303HPC-S fits and book it in.

Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.

Common questions

What does the silver finish on the FX-303HPC-S mean?
It is a silver ceramic coating on the extractor pipes, used to manage heat and corrosion. An uncoated version of the same extractor is a separate part.
What pipe sizes does it run?
1-3/4in primaries into 4-into-1 collectors with 3in outlets, sized for a 5.0L EFI conversion in the HQ-HZ Holden.
Can the workshop check it fits my conversion?
Yes. Oak Flats Muffler Men confirms clearance against your converted engine, steering and chassis before fitting.

Fitment support across the Illawarra

Fitment checks near you across 18 Illawarra suburbs, from Oak Flats and Shellharbour to Wollongong and Kiama.
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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.