What size is the MKNI0103?

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

What's the muffler arrangement?

A chambered centre muffler handles the main quietening and a free-flowing rear hotdog finishes the system.

Does it keep the cat?

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

MKNI0103

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

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

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $862.60 AUD

In stock at supplier

Request fitted quote Call the workshop

Afterpay, Zip Pay & Zip Money available

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

Part specs

SKU: MKNI0103
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

Sized at 2.5in for the larger 4.8L petrol six, the MPI Automotive MKNI0103 is a cat-back for the Nissan Patrol GU, running a centre muffler and a rear hotdog. It's the section-behind-the-cat upgrade rather than a full-length replacement.

What does the 2.5in bore suit on the 4.8L?

At 2.5in this cat-back is matched to the GU Patrol's 4.8L engine — a sensible bore for a big petrol six in a heavy 4x4 that earns its keep loaded and towing. It keeps gas speed up for usable low-down and mid-range response rather than chasing the largest possible pipe, which is the right call for a working wagon.

How do the centre muffler and rear hotdog pair up?

The centre muffler is the chambered, absorptive silencer that does the heavy quietening in the middle of the car. The rear hotdog is a compact straight-through resonator that flows freely and lets the note out cleanly at the tailpipe. The combination gives a controlled note with a freer exit than a two-muffler arrangement.

Is it road legal, and what stays in place?

As a cat-back, the MKNI0103 starts behind the catalytic converter and leaves the factory cat and the emissions hardware ahead of it untouched — the usual sticking point for compliance. 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 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 size is the MKNI0103?: It's a 2.5in cat-back, sized to suit the 4.8L petrol six in the Patrol GU.
What's the muffler arrangement?: A chambered centre muffler handles the main quietening and a free-flowing rear hotdog finishes the system.
Does it keep the cat?: Yes — it's a cat-back, so the factory catalytic converter 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