4 Inch Diameter

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Grand Rock 04-22804-000 Freightliner Muffler 13" x 43"- 5" ID IN-OUT M-158A

MSRP: $1,627.57

$1,320.00

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

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

MSRP: $509.00

$339.00

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

MSRP: $408.00

$204.00

Hi-Flow Universal Fit Muffler 10" x 44" with 5" IN/OUT M100465 (D13-5010/M-465)

ShuttleWorth Hi-Flow Universal Fit Muffler 10" x 44" with 5" IN/OUT M100465

MSRP: $299.00

$165.00

M-502 Type 2 Muffler for Ford 11" Round x 36" long 4" In-Out

Grand Rock Type 2 Muffler for Ford 11" Round x 36" long 4" In-Out M-502

MSRP: $574.00

$350.00

Grand Rock 5" Ford Oval Muffler 10" x 15" x 36" Body M-503 Type 6

MSRP: $814.00

$514.00

Mack Granite & R Series Muffler Type 1 9" x 44.5" 4" IN-5" OUT

Grand Rock Mack Granite & R Series Muffler 9" x 44 with 4" IN/5" OUT Type 1 M-514

MSRP: $488.00

$287.00

Grand Rock M-526 10" Round Muffler for GMC Brigadier and Astro 5" IN-OUT

MSRP: $764.00

$427.00

Grand Rock M-529 Type 2 Muffler for Ford School Bus 11" x 36" Round 4" IN-OUT

MSRP: $612.00

$452.00

Ford or Kenworth Truck Muffler 11.1" x 36" M-530 Type 6

Grand Rock Ford or Kenworth Truck Exhaust Muffler 11" x 36" 4" IN/OUT Type 6

MSRP: $670.00

$411.00

Grand Rock 25159367 Mack DM Oval Muffler 10" x 15" Oval 4" IN & 5" OUT

MSRP: $568.11

$381.11

633 products total