SSMKCH0028

Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in DPF Back Without Muffler

Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in DPF Back Without Muffler (SKU: SSMKCH0028) Engineered.

BrandMantaMPI Automotive

Category: Mufflers and resonators

RRP $2941.84 AUD
In stock at supplier
Afterpay, Zip Pay & Zip Money available
Afterpay acceptedZip accepted — Zip Pay and Zip Money
Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in DPF Back Without Muffler product image

Part specs

SKU
SSMKCH0028
Supplier
MPI Automotive
Category
Mufflers and resonators
Vehicle fitment
Chevrolet
Stock status
In stock at supplier

A stepped 4in-to-5in bore and a muffler-delete are what define the MPI Automotive SSMKCH0028 — a DPF-back section listed to fit the Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8 (2020–2025). It starts behind the diesel particulate filter and runs muffler-free for an open note.

What does a DPF-back section cover?

A DPF-back replaces the exhaust from behind the diesel particulate filter rearward, leaving the DPF and the emissions hardware upstream untouched. On the Silverado's 6.6L turbo-diesel V8 the SSMKCH0028 runs a stepped 4in-into-5in bore and deletes the rear muffler, so it opens the note without disturbing the particulate filter.

Why the 4in-to-5in step?

Stepping the pipe from 4in up to 5in toward the rear gives a larger exit while keeping a tidy 4in run off the DPF-back connection. Paired with the muffler delete, that makes for a free-flowing, vocal section. The bore figures here are the system's own — it's sized for the big diesel V8.

Is it road legal?

As a DPF-back, the SSMKCH0028 leaves the diesel particulate filter and the upstream emissions equipment in place — it doesn't touch the DPF. Deleting the muffler does change the note, so confirm noise levels and any state requirements with the workshop before fitting.

What does fitting involve at our Illawarra workshop?

Oak Flats Muffler Men supplies and fits this MPI Automotive DPF-back section in-house across the Illawarra. We confirm the connection behind the DPF, check hanger points on the stepped 4in-5in run and the listed Silverado fitment, then book the bay. The RRP is $2,941.84.

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

Common questions

Does the SSMKCH0028 remove the DPF?
No. It's a DPF-back section, so it starts behind the diesel particulate filter and leaves the DPF and upstream emissions hardware in place.
What does the 4in-5in mean?
The pipe steps from 4in up to 5in toward the rear, giving a larger exit on the muffler-free run. Those bore figures are the section's own spec.
Will it fit my 2500 HD?
It's listed to fit the 2020–2025 Silverado 2500 HD T1 6.6L turbo-diesel V8. Confirm your exact build with the workshop first.

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

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.