What's the difference between the Thai and other D40 versions?

The D40 was built in more than one market and the plumbing can differ. This one is listed specifically for the Thai-built 2.5L auto — confirm your variant with the workshop before ordering.

Can I register a D40 with this fitted?

No. It replaces the catalytic converter and DPF, so it isn't ADR 79/04 compliant for road registration in NSW and is for off-road use only.

It runs a rear muffler that absorbs sound, so it's the more subdued option in the range.

MKNI0080

Nissan Navara D40 2.5L Auto THAI DPF & Cat Replacement With Rear Muffler

MPI Automotive Nissan Navara D40 2.5L Auto THAI DPF & Cat Replacement With Rear Muffler.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $2401.39 AUD

In stock at supplier

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Nissan Navara D40 2.5L Auto THAI DPF & Cat Replacement With Rear Muffler product image

Part specs

SKU: MKNI0080
Supplier: MPI Automotive
Category: Mufflers and resonators
Vehicle fitment: Nissan
Stock status: In stock at supplier

The MPI Automotive MKNI0080 is built for the Thai-built Nissan Navara D40 2.5L auto — the specific platform variant matters here, because the D40 came from more than one plant. It's a DPF-and-cat replacement system with a rear muffler, meaning both the diesel particulate filter and the cat are replaced in the run.

Why does the Thai build matter?

The D40 Navara was produced in different markets, and the underbody plumbing and emissions hardware can differ between them — so MPI list this version specifically for the Thai-built 2.5L auto. Getting that variant right is the difference between a system that lines up and one that doesn't, which is exactly why the part is split out this way. The rear muffler quietens the note by absorption, keeping it the more subdued option in the range.

What is a DPF-and-cat replacement?

This system replaces the diesel particulate filter and the catalytic converter in the exhaust run rather than retaining them. A DPF traps soot from a diesel and the cat handles emissions chemistry; replacing both removes that hardware from the path. The rear muffler then manages sound for what's left of the system.

Is the MKNI0080 road legal in NSW?

No. Because it replaces the catalytic converter (and the DPF) on a road-relevant exhaust path, the MKNI0080 is not ADR 79/04 compliant for road registration in NSW and is for off-road or competition use only. Removing the DPF and cat strips emissions hardware the Navara left the factory with — there's no softening that for registration. Talk to the workshop about your options if you need a registrable build.

Will it fit my D40, and how do you fit it?

It's listed to fit the Thai-built Nissan Navara D40 2.5L auto. The supplier doesn't publish a year range here, so confirm your exact D40 build — and that it's the Thai variant — with the workshop before we order. Oak Flats Muffler Men supplies and fits this MPI Automotive system in the Illawarra, and we'll check the routing under your Navara and 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

What's the difference between the Thai and other D40 versions?: The D40 was built in more than one market and the plumbing can differ. This one is listed specifically for the Thai-built 2.5L auto — confirm your variant with the workshop before ordering.
Can I register a D40 with this fitted?: No. It replaces the catalytic converter and DPF, so it isn't ADR 79/04 compliant for road registration in NSW and is for off-road use only.
Is it loud?: It runs a rear muffler that absorbs sound, so it's the more subdued option in the range.

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