What's the muffler layout on the MKNI0073?

It runs two chambered mufflers — a centre and a rear — which makes it the quieter, more subdued GU cat-back option.

It's a 2.5in cat-back, sized to suit the 4.8L petrol six in the Patrol GU.

Does it keep the catalytic converter?

Yes — it's a cat-back, so the factory cat stays in place ahead of it.

MKNI0073

Nissan Patrol GU 4.8L 2.5in Cat Back System Centre & Rear Muffler

Nissan Patrol GU 4.8L 2.5in Cat Back System Centre & Rear Muffler (MKNI0073) Fits NISSAN. Fast.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $902.35 AUD

In stock at supplier

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Nissan Patrol GU 4.8L 2.5in Cat Back System Centre & Rear Muffler product image

Part specs

SKU: MKNI0073
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

The MPI Automotive MKNI0073 is a 2.5in cat-back for the Nissan Patrol GU 4.8L that runs two chambered mufflers — a centre and a rear. That twin-muffler layout is the quieter, more subdued of the GU cat-back options.

What does a twin-muffler cat-back give?

Running both a centre and a rear muffler means two stages of chambered, absorptive silencing rather than pairing a muffler with a free-flowing hotdog. On the 4.8L petrol six that keeps the note the most restrained of the GU layouts — a tidy, civil tone for owners who want the upgrade without a louder result. Both stages stay in the run, so the quietening is done front and rear.

What does the 2.5in bore suit?

At 2.5in this cat-back is sized for the GU Patrol's 4.8L engine, a sensible street bore for a heavy 4x4 that works loaded and towing. It keeps gas speed up for usable low-down and mid-range response rather than chasing the largest possible pipe.

Is it road legal, and what stays in place?

As a cat-back it starts behind the catalytic converter and leaves the factory cat and the emissions hardware ahead of it untouched — the usual compliance sticking point. Confirm any state requirements and your exact build with the workshop before fitting.

Who fits it, and will it suit my GU?

It's listed to fit the Nissan Patrol GU 4.8L; the GU had a long, updated production run, so confirm your exact build first. Oak Flats Muffler Men supplies and fits this cat-back in-house across the Illawarra.

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

Common questions

What's the muffler layout on the MKNI0073?: It runs two chambered mufflers — a centre and a rear — which makes it the quieter, more subdued GU cat-back option.
What size is it?: It's a 2.5in cat-back, sized to suit the 4.8L petrol six in the Patrol GU.
Does it keep the catalytic converter?: Yes — it's a cat-back, so the factory cat stays in place ahead of it.

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.

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.

Unit 2/8 Shaban St, Albion Park Rail NSW 2527 02 4256 3740 sales@mufflermen.com.au Send vehicle details