MBM378WOM

Holden VY - VZ 5.7L V8 1 ton Ute, Crewman 2 1/2in Dual Centre Assembly W/out Muffler

Holden VY - VZ 5.7L V8 1 ton Ute, Crewman 2 1/2in Dual Centre Assembly W/out Muffler for selected vehicle applications.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $562.87 AUD
In stock at supplier
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Holden VY - VZ 5.7L V8 1 ton Ute, Crewman 2 1/2in Dual Centre Assembly W/out Muffler product image

Part specs

SKU
MBM378WOM
Supplier
MPI Automotive
Category
Mufflers and resonators
Stock status
In stock at supplier

The MPI Automotive MBM378WOM is a 2in dual centre assembly supplied without a muffler, listed to fit the 5.7L V8 Holden VY-VZ 1-Tonner and Crewman ute. The without-muffler centre is the defining feature — it replaces the mid-system silencer with open dual pipe.

What does a without-muffler centre assembly do?

Instead of a chambered centre silencer, the MBM378WOM is a straight-through dual centre — it deletes the factory mid-system muffler and runs clear dual pipe in its place. That opens up the middle of the system for a louder, harder note than stock, while the rear silencing stays to keep it civil at the tail. It's the centre-delete path for owners who want more sound without changing the rear.

Why a dual 2in centre on the 5.7L ute?

It's a dual assembly, carrying two paths through the centre to match the dual layout of these utes. At 2in per side the bore suits the 5.7L V8 in a road-driven 1-Tonner or Crewman, keeping gas speed up rather than going oversized. The same centre suits both the long-wheelbase and crew-cab bodies that share this underbody.

Will it fit my 5.7L V8 ute?

It's listed for the 5.7L V8 VY-VZ 1-Tonner and Crewman. Send your exact model and build and we'll confirm the centre length and hanger spacing before ordering, since these utes had running changes.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men fits the MBM378WOM in-house, clamping or welding the dual centre in and aligning it clear of the chassis and driveline. Book the ute in and we'll confirm the fitment against your build.

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

Common questions

Does it have a muffler?
No — the MBM378WOM is a without-muffler dual centre, a straight-through assembly that deletes the factory centre silencer.
Will it sound louder?
Yes, deleting the centre muffler gives a louder, harder note than stock, with the rear silencer still fitted.
Which utes does it suit?
It's listed for the 5.7L V8 VY-VZ 1-Tonner and Crewman. Confirm your build 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.
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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.