
HFD-VDJ79 V8 4.5L TD, (DPF) Ute 2016 To Current, 4in Dual With Cat
MPI AutomotiveRRP$6245.89HFD-VDJ79 V8 4.5L TD, (DPF) Ute 2016 To Current, 4in Dual With Cat & Without Muffler (SKU: SSMKTY0336) Engineered.
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Landcruiser GDJ79 Ute, 2.8L TD, 2023-Current, 3in Turbo Back Without Cat & With Muffler.
Category: Mufflers and resonators


The MPI Automotive MKTY0407 pairs a rear muffler with a cat-delete — a 3in turbo-back for the Toyota Landcruiser GDJ79 2.8L turbo-diesel ute from 2023 that runs the freest engine-back path but still tames the rear note. It is the off-road build for owners who want flow without a fully open, droning rear.
Deleting the cat opens the engine-back run, and the rear muffler then settles the tone so the GDJ79 does not run completely raw. A muffler quietens by absorption and reflection, so even with the cat removed the MKTY0407 keeps the 2.8L diesel's note the calmest of the no-cat options — flow up front, manners at the rear. It suits a competition or off-road ute where you still want to live with the sound.
This build runs without the catalytic converter. Removing the cat from the engine-back run means it is not ADR 79/04 compliant for road registration in NSW and is for off-road use only. The rear muffler does not change that — the missing cat is what decides registration on a diesel ute, so speak to the workshop about your intended use first.
Turbo-back means the run is replaced from the turbo outlet rearward, a longer span than a rear-section swap. At 3in the MKTY0407 covers that full run on the GDJ79 2.8L ute from 2023, finishing through the rear muffler. MPI Automotive lists it at $2584.63, generally ordered in to suit your build.
Oak Flats Muffler Men supplies and fits MPI turbo-back systems in our own bay across the Illawarra. The MKTY0407 is listed to fit the GDJ79 2.8L ute from 2023; send your build and we will confirm clearances and book it in.
Stocked and fitted by Oak Flats Muffler Men, the Illawarra exhaust and 4x4 specialist in Oak Flats, NSW.
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.
Send the vehicle make, model, year, engine, current issue, desired sound or performance goal, and clear photos of the existing exhaust where available.