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![4 in. Performance Muffler [T304 Stainless Steel]](https://www.jegs.com/images/mini_750/600/679/679-m1031.jpg)
Vehicle Info NeededMBRPPART NUMBER: 679-M1031
4 in. Performance Muffler [T304 Stainless Steel]
$34499
Ships on Nov 02, 2026
Lowest Price GuaranteeStainless
4 in. Performance MufflerUniversal Fit 4 in. Center Inlet and Outlet Slip-Fit Connections 6 in. Round Body, 30 in. Overall T304 Stainless Steel Polished Finish Sold Individually
This universal muffler is sized for 4 in. exhaust tubing and uses a performance design. It is a practical choice for custom exhaust builds, replacement of a worn-out factory muffler, or tuning the sound of a truck or car.
Key Details: MBRP M1031 Muffler
- Performance muffler design.
- 4 in. center inlet and outlet; slip-fit connections.
- 6 in. round body with a 30 in. overall length.
- Constructed from T304 stainless steel with a polished finish.
- Replaces all 30 in. overall length mufflers.
- Clamps and hangers are not included.
- Sold individually.
- MBRP Diesel High-Flow Mufflers boasts a fully welded construction and is designed to take all of the abuse you can throw at it. Built from 100% 16 gauge aluminized steel or stainless steel with a spiral louver design that accelerates gas flow for maximum performance and sound.Features:
- Aluminized or Stainless Steel Construction.
- Spiral Louver Design For Maximum Flow.
- Delivers Rich Diesel Exhaust Note.
- Diesel Applications Only.
Part TypeMuffler
Product LineMBRP Diesel High-Flow Mufflers
BrandMBRP
Package Height7.0
Package Width7.0
Package Length40.0
Weight18.0 PG
Part CategoryPerformance Parts
Outlet Quantity1
Muffler TypePacked
Inlet PositionCenter
Inlet TypeSingle Center Inlet
Inlet Size (In.)4
Body Length24 in (609.6 mm)
Muffler Count1
Clamps IncludedNo
Inlet Quantity1
FinishPolished
Outlet Size4 in (101.6 mm)
Hanger IncludedNo
Inlet Connection TypePipe Connection
QuantitySold Individually
Overall Length30 in (762 mm)
Material304 Stainless Steel
Body Width6 in (152.4 mm)
TypeMuffler
Tubing Diameter4 in (101.6 mm)
Body Height6 in (152.4 mm)
Outlet TypeSingle Center Outlet
Part FitmentUniversal
Outlet PositionCenter
Vendor Part NumberM1031
Package Qty1
Package TypeEA
Some parts are not legal for use in California or other states with similar laws / regulations
