It keeps a muffler that absorbs sound, so it's freer-breathing than a with-cat build but not as loud as a hotdog or open system.

It's a 3in system for the D22 2.5L. Confirm your exact build with the workshop before ordering.

MKNI0004

Nissan Navara D22 2.5L 3in Exhaust Without Cat, with Muffler

Nissan Navara D22 2.5L 3in Exhaust Without Cat, with Muffler.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $1604.52 AUD

In stock at supplier

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Nissan Navara D22 2.5L 3in Exhaust Without Cat, with Muffler product image

Part specs

SKU: MKNI0004
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

The MPI Automotive MKNI0004 is a 3in exhaust for the Nissan Navara D22 2.5L that runs without the catalytic converter but keeps a muffler. The cat-delete is the defining choice here — it frees the system right up, while the muffler keeps the note from getting raucous.

What does a 3in no-cat, muffled system do?

Deleting the catalytic converter removes a restriction and the emissions hardware from the path, and at 3in the pipe is sized to flow well over the D22's factory system. The retained muffler then quietens by absorption, so the MKNI0004 is freer-breathing than a with-cat build but not as loud as a hotdog or open system — the muffler controls the volume even with the cat gone. It suits a 2.5L D22 owner who wants the bigger bore and more flow without a constant hard note.

Is the MKNI0004 road legal in NSW?

No. Even with the muffler retained, this 3in system runs without the catalytic converter on a road-relevant exhaust path, so it is not ADR 79/04 compliant for road registration in NSW and is for off-road or competition use only. The muffler controls sound, not emissions — deleting the cat strips the hardware the Navara left the factory with, and that's the registration sticking point. Ask the workshop about a with-cat build if you need to stay registrable.

Will it suit my D22 2.5L?

It's listed to fit the Nissan Navara D22 2.5L in 3in with a muffler. The supplier doesn't publish a year range on this listing, so confirm your exact D22 build with the workshop before we order — listed-to-fit covers the engine and model, but we verify the actual vehicle rather than rely on feed data.

What's involved in fitting it in the Illawarra?

Oak Flats Muffler Men supplies and fits this MPI Automotive system at our Oak Flats workshop. We'll confirm the 3in routing and muffler clearance under your D22, check the fitment against your vehicle, and — because it's a cat-delete — talk through the off-road-only 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

Can I register a D22 with this fitted?: No. It deletes the catalytic converter, so it isn't ADR 79/04 compliant for road registration in NSW and is for off-road use only — the muffler controls sound, not emissions.
Is it loud?: It keeps a muffler that absorbs sound, so it's freer-breathing than a with-cat build but not as loud as a hotdog or open system.
What bore is it?: It's a 3in system for the D22 2.5L. Confirm your exact build with the 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.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