DIAMOND EYE 460031 DIESEL EXHAUST MUFFLER 30 INCH ROUND 4 INCH CENTER INLET/OUTLET STAINLESS EXHAUST MUFFLER PERFORMANCE PERFORATED

DIAMOND EYE 460031 is a universal, straight-through perforated performance muffler built from T409 stainless steel to handle diesel heat cycles and corrosion. With a 30" round body and 4" center/center I.D. inlet & outlet, it’s an ideal upgrade or replacement for 4" systems on Cummins, Duramax, and Power Stroke trucks (universal fit; trimming/welding may be required).

FAQ: WILL THIS FIT MY TRUCK?

This is a universal 4" muffler with 4" I.D. center/center ends. It fits most 4" diesel exhaust systems (aftermarket) when installed in a straight section of pipe. Verify your system diameter and space for a 30" body before ordering.

FAQ: WHAT SOUND SHOULD I EXPECT?

The perforated, straight-through core reduces drone compared to a straight pipe while preserving flow. Expect a deep, refined tone without excessive restriction.

FAQ: WHAT’S THE MATERIAL AND WHY T409?

T409 stainless provides excellent heat and corrosion resistance at a lower weight and cost than T304—great for daily-driven and work trucks in varied climates.

Fitment Details

• Configuration: 4" I.D. center/center inlet & outlet
• Body: 30" round, straight-through perforated core
• Use Case: Universal 4" diesel exhaust systems (retrofit/weld-in or clamp-in with 4" couplers)
• Notes: Check overall length and hanger locations; professional installation recommended.

Cross-Reference / Alternatives (Diamond Eye only)

• DIAMOND EYE 470050 — 27" round, 4" center/center, stainless, perforated (shorter body)
• DIAMOND EYE 560031 — 30" round, 5" center/center, stainless, perforated (5" systems)
• DIAMOND EYE 460005 — 30" round, 4" center/center, aluminized, louvered (budget option)
• DIAMOND EYE 510210 — 30" 4" I.D. stainless muffler delete pipe (maximum volume/flow)

Specifications