Does the MKNI0001 keep the catalytic converter?

Yes. This is a with-cat system, so the factory catalytic converter stays in place, making it more registration-friendly than a cat-delete option.

It runs a muffler that absorbs sound, so it's the more subdued, daily-friendly build rather than a loud one.

It's a 3in system for the D22 3.0L. Confirm your exact build with the workshop before ordering.

MKNI0001

Nissan Navara D22 3.0L 3in Exhaust With Cat, with Muffler

Nissan Navara D22 3.0L 3in Exhaust With Cat, with Muffler (SKU: MKNI0001) Engineered. Quality guaranteed.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $1748.36 AUD

In stock at supplier

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Nissan Navara D22 3.0L 3in Exhaust With Cat, with Muffler product image

Part specs

SKU: MKNI0001
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

The MPI Automotive MKNI0001 is a 3in exhaust for the Nissan Navara D22 3.0L that keeps the catalytic converter and runs a muffler. It's the with-cat, muffled D22 system — the bigger 3in bore opens the breathing up over stock while the retained cat and the muffler keep emissions and sound in check.

What does this 3in with-cat muffled system change?

Stepping the D22 3.0L to a 3in bore gives the engine more room to breathe than the restrictive factory exhaust, while keeping the catalytic converter means the Navara holds onto the emissions hardware it came with. The muffler quietens the note by absorption, so the MKNI0001 is the sensible, daily-friendly path: more flow and a slightly fuller note, but with the cat in place and the volume controlled rather than opened up. It suits a 3.0L D22 owner after a tidy breathing upgrade without deleting anything.

Is the MKNI0001 road legal?

Because it keeps the catalytic converter, the MKNI0001 leaves the emissions equipment the Navara left the factory with in place — the usual compliance sticking point on diesel utes. That makes it a far more registration-friendly choice than a cat-delete system, though final compliance depends on your specific build and state requirements, so confirm those with the workshop before fitting.

Will it suit my D22 3.0L?

It's listed to fit the Nissan Navara D22 3.0L in 3in with cat and 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 check 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, the cat position and the muffler clearance under your D22, check the fitment against your vehicle, and book the bay once it's confirmed.

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

Common questions

Does the MKNI0001 keep the catalytic converter?: Yes. This is a with-cat system, so the factory catalytic converter stays in place, making it more registration-friendly than a cat-delete option.
Is it loud?: It runs a muffler that absorbs sound, so it's the more subdued, daily-friendly build rather than a loud one.
What bore is it?: It's a 3in system for the D22 3.0L. 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