MKHN0309

HSV WL Grange V8 2.5in Dual With Extractors Muffler

HSV WL Grange V8 2.5in Dual With Extractors Muffler/Muffler (MKHN0309) Fits HOLDEN. Fast shipping.

BrandMantaMPI Automotive

Category: Extractors and headers

RRP $4445.98 AUD
In stock at supplier
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HSV WL Grange V8 2.5in Dual With Extractors Muffler/Muffler product image

Part specs

SKU
MKHN0309
Supplier
MPI Automotive
Category
Extractors and headers
Vehicle fitment
Holden
Stock status
In stock at supplier

Cut specifically for the HSV WL Grange, the MPI Automotive MKHN0309 is a dual 2.5in extractor system with twin mufflers. The long-wheelbase Grange packaging and the muffler-muffler layout are what define this V8 part.

What suits the WL Grange about this system?

The Grange is HSV's long-wheelbase luxury car, so its exhaust has more length to route and a refined note to suit, and the MKHN0309 reflects that with a quieter-biased twin-muffler layout. It carries dual 2.5in — a pipe for each bank of the V8 — through two mufflers. That pairing of long-wheelbase routing and double silencing is the character of this part.

Why two mufflers?

The MKHN0309 uses a muffler-muffler arrangement — two mufflers in the dual 2.5in run — for more silencing and a more settled note in keeping with the Grange. The extractors ahead replace the factory cast manifolds with tubular runners off each cylinder, a header set per bank, easing the way the V8 breathes out compared with the cast castings. It works as part of the complete exhaust, not on its own.

Will it suit my WL Grange V8?

The MKHN0309 is listed to fit the HSV WL Grange V8; confirm the exact build with the workshop before ordering. The 2.5in figure sets the pipe size for both banks, and material is not published by the supplier, so construction is confirmed on order.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men fits dual extractor systems like the MKHN0309 in-house across the Illawarra. The job means dropping both factory manifolds, fresh gaskets, and routing two 2.5in pipes with both mufflers along the long-wheelbase Grange. Supplied by MPI Automotive at $4,445.98 AUD; send your details and we will confirm fitment and book the bay.

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

Common questions

Is the MKHN0309 made for the HSV Grange?
Yes — it is listed to fit the HSV WL Grange V8, with a dual 2.5in run and twin mufflers suited to the long-wheelbase car.
How many mufflers does it use?
Two — a muffler-muffler layout in the 2.5in dual run for a more settled note.

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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Book the right exhaust job without guessing.

Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.