Sinister Diesel · New
Sinister Diesel 4in. Inlet Universal Stainless Steel Muffler
MPN SD-U4M-01-20 · Store SKU sinSD-U4M-01-20
Supplier stock checked 11/7/2026, 11:38:30 AM UTC. Adding a part does not reserve it.
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Product details
So your modified diesel truck is putting out the rich sound you want, except not where you want it: the cab. With the Sinister Diesel Stainless Steel Muffler, you can reduce the road drone in your cab, while maintaining that deep bellow from your exhaust kit. 4" Inlet Universal Stainless Steel Muffler . 4" Inlet Universal Stainless Steel Muffler
Manufacturer fitment & guides
- Universal Fit
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y