4 Inch Mufflers

Sort by:

Products per page:

Free Shipping

M-136 or 10050 Type 1 Muffler 10" x 36" Body 5" ID Inlets - Great For Dump Trucks

Grand Rock M-136 or 10050 Type 1 Muffler 10" x 36" Body 5" ID Inlets Dump Trucks

MSRP: $610.00

$380.00

Free Shipping

Grand Rock M-139 Type 2 Muffler 8.5" Round x 31" 3" IN-OUT

MSRP: $336.00

$246.00

Free Shipping

M-1436 Type 1 Diesel Muffler 14" Round 36" Long 5" IN-OUT

Grand Rock 14" Round Diesel Muffler 36" Long 5" IN-OUT M-1436

MSRP: $1,927.00

$1,227.00

Free Shipping

Grand Rock M-144 Type 1 Resonator 9" x 10" with 4" Inlet-Outlet

MSRP: $264.00

$182.00

Free Shipping

M-145 Type 1 Resonator 9" Round x 10" long with 5" IN-OUT

Grand Rock 9" Round Resonator x 10" long with 5" IN-OUT M-145

MSRP: $305.00

$205.00

Free Shipping

Grand Rock M-147 Type 2 Oval Thomas Muffler 10 x 15 x 26" 5" IN-OUT

MSRP: $511.00

$411.00

Free Shipping

Grand Rock Mack DM Muffler 10 x 15 Oval 4" Inlet 3.8" OD Outlet 16" long

MSRP: $362.50

$290.00

Free Shipping

Grand Rock M-153 Type 2 Oval Muffler 8.25" x 11.5" x 27" 4" IN-OUT MO90534

MSRP: $388.00

$271.00

Free Shipping

ShuttleWorth 04-22804-000 Freightliner Muffler 13" x 43"- 5" ID IN-OUT M-158A Q-082-08

MSRP: $1,627.57

$1,050.00

Free Shipping

M-1774 Type 1 Muffler for Freightliner 8" Body 55" Long

Grand Rock Muffler for Freightliner 8" Round x 55" Long Body M-1774

MSRP: $1,426.00

$926.00

Free Shipping

Grand Rock M-196 Type 1 Muffler For Cummins Electronic 10" x 44.5" 5" IN-OUT

MSRP: $509.00

$339.00

Free Shipping

Grand Rock M-444 Type 1 Muffler 10" Round 4" Inlet-Outlet 44.5" Body - 51" Overall

MSRP: $408.00

$204.00

71 products total