Is the MKNI0094 legal for road registration?

No — it deletes the catalytic converter on a turbo-back, so it is not ADR 79/04 compliant for road registration in NSW and is for off-road use.

What's the difference between this and the muffler version?

This one uses a free-flowing hotdog resonator rather than a chambered muffler, so it's the freer-flowing, harder-edged option.

It's a 3in turbo-back, sized to suit the NP300 Navara's turbo-diesel.

MKNI0094

Nissan NP300 Navara 3in Turbo Back Exhaust System Without Cat, Hotdog

Nissan NP300 Navara 3in Turbo Back Exhaust System Without Cat, Hotdog (SKU: MKNI0094) Engineered.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $1968.95 AUD

In stock at supplier

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Nissan NP300 Navara 3in Turbo Back Exhaust System Without Cat, Hotdog product image

Part specs

SKU: MKNI0094
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

The MPI Automotive MKNI0094 is a 3in turbo-back exhaust for the Nissan NP300 Navara, built without a catalytic converter and using a hotdog resonator. As a cat-delete on a road-relevant system, it is not ADR 79/04 compliant for road registration in NSW and is for off-road use.

Why the hotdog instead of a muffler?

This turbo-back finishes with a hotdog — a compact straight-through resonator that flows more freely than a chambered muffler and trims harshness rather than heavily silencing. On a no-cat system that gives the freest-flowing, hardest-edged of the turbo-back options, which is why it's built for off-road rather than street duty.

What does deleting the cat mean for registration?

A turbo-back replaces the exhaust from the turbo outlet rearward, and this one runs without a catalytic converter — removing emissions hardware the NP300 left the factory with. That makes it not ADR 79/04 compliant for road registration in NSW; it's intended for off-road, competition or private-property use where road compliance isn't required, with no softening of that.

What does the 3in bore suit?

At 3in this turbo-back is sized for the NP300 Navara's turbo-diesel, the larger bore that suits a turbocharged ute freeing up restriction behind the turbo. The listing doesn't state the exact engine here, so confirm your build with the workshop.

Will it fit, and who fits it?

It's listed to fit the Nissan NP300 Navara; confirm your exact build and turbo arrangement first. Oak Flats Muffler Men supplies and fits this off-road turbo-back in-house across the Illawarra, and we'll confirm the intended use before booking the bay.

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

Common questions

Is the MKNI0094 legal for road registration?: No — it deletes the catalytic converter on a turbo-back, so it is not ADR 79/04 compliant for road registration in NSW and is for off-road use.
What's the difference between this and the muffler version?: This one uses a free-flowing hotdog resonator rather than a chambered muffler, so it's the freer-flowing, harder-edged option.
What size is it?: It's a 3in turbo-back, sized to suit the NP300 Navara's turbo-diesel.

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