
Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat
MPI AutomotiveRRP$7103.73Silverado 2500 HD T1, 6.6L TD V8, 2020-2025, 4in-5in Turbo Back With Cat & Muffler (SKU: SSMKCH0024) Engineered.
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Silverado 2500 HD T1, 6.6L TD V8, Dec 2023-2025, 4in Turbo Back, Suits OEM Tailpipe, Cat & Muffler (SKU.
Category: Mufflers and resonators


The most complete and civil build of the group, the MPI Automotive SSMKCH0029 keeps both the catalytic converter and a muffler. This 4in turbo-back is listed to fit the Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8 (2023–2025) and suits the OEM tailpipe.
A turbo-back replaces the exhaust from the turbo outlet rearward — a longer span than a cat-back. The SSMKCH0029 takes that 4in run but retains both the catalytic converter and a muffler, so it's the quietest and most road-oriented of this Silverado family. It mates to the OEM tailpipe, keeping the rear exit standard while the upstream 4in path is upgraded.
Because the SSMKCH0029 keeps the catalytic converter, the emissions hardware that matters for registration stays in place — the cat-delete issue doesn't apply here. It also retains a muffler, so the note stays controlled. Confirm the exact build and any state requirements with the workshop before fitting.
It's listed to fit the December 2023–2025 Chevrolet Silverado 2500 HD T1 6.6L turbo-diesel V8 — a tighter year window than some of the family. Because it suits the OEM tailpipe, send your build to the workshop so we can confirm the listing and tailpipe interface against your truck before ordering.
Oak Flats Muffler Men supplies and fits this MPI Automotive turbo-back in-house across the Illawarra. We confirm the OEM tailpipe connection and hanger points, check the listed Silverado fitment, and book the bay. The RRP is $4,350.10.
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.