SSMBM170MF

Holden Commodore VT VU VY VZ Sedan V8 Dual 2 1/2in Centre Muffler Recommend For Auto

Holden Commodore VT VU VY VZ Sedan V8 Dual 2 1/2in Centre Muffler Recommend For Auto for selected vehicle applications.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $1124.24 AUD
In stock at supplier
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Holden Commodore VT VU VY VZ Sedan V8 Dual 2 1/2in Centre Muffler Recommend For Auto product image

Part specs

SKU
SSMBM170MF
Supplier
MPI Automotive
Category
Mufflers and resonators
Stock status
In stock at supplier

Built in stainless and run as a dual 2½in pairing, the MPI Automotive SSMBM170MF is a centre-muffler set for the V8 Holden Commodore VT, VU, VY and VZ sedan, and is the section MPI flags as the pick for automatic cars.

Why the dual 2½in layout on a V8 Commodore?

This is a paired centre-muffler section running twin 2½in bores rather than a single larger pipe. On a V8 VT–VZ that splits the gas flow into two streams through the mid-section, which suits the factory dual layout these sedans were built around. At 2½in per side it's matched to a stock-to-mild V8 rather than a heavily worked one, keeping flow honest without going oversize.

Why is it recommended for the auto?

MPI lists this section as the recommended choice for automatic cars. The auto's torque-converter and shift behaviour change how the engine loads the exhaust at low rpm, and a centre muffler tuned for that pairing keeps the note settled rather than droning on light throttle. If your Commodore is a manual, tell us and we'll check whether this is still the right section for your build.

What does stainless construction get you?

The SS designation means stainless rather than aluminised. On a Commodore sedan that lives outdoors, stainless resists the surface rust and perforation that eventually claims mild-steel mufflers, so the section lasts longer underneath. It's the part to choose if you want the centre muffler to outlive the rest of a tired factory system.

Will it suit my VT to VZ sedan?

It's listed to fit the V8 sedan across the VT, VU, VY and VZ range. Holden ran detail changes through that era, so confirm your exact model and the current pipe sizing with Oak Flats Muffler Men in the Illawarra before ordering — feed data is a guide, not a guarantee.

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

Common questions

Is the SSMBM170MF stainless?
Yes, the SS designation indicates stainless construction, which resists corrosion better than aluminised steel under a Commodore that lives outdoors.
Why is it recommended for automatics?
MPI flags this dual 2½in centre-muffler section as the recommended pick for automatic V8 Commodores. If yours is a manual, ask the workshop to confirm it's the right section for your car.
Does it fit all VT to VZ V8 sedans?
It's listed to fit V8 sedans across VT, VU, VY and VZ. Confirm your exact variant and current pipe sizing with the Oak Flats workshop before ordering.

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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