3 Inch Mufflers

Sort by:

Products per page:

Free Shipping

M-187 Type 1 Muffler 3" Inlet-Outlet 6.1" x 21" Body - 30" Overall

Grand Rock M-187 Type 1 Muffler 3" Inlet-Outlet 6.1" x 21" Body - 30" Overall

MSRP: $376.98

$232.78

Free Shipping

M-556 Type 1 Resonator 9" x 10" x 16" 3" IN-OUT

Grand Rock M-556 Type 1 Resonator 9" x 11.5" x 16" 3" IN-OUT

MSRP: $407.89

$212.19

Free Shipping

M-624 Type 2 Muffler for GMC 8.5" x 30.25" 2.75 IN - 3" OUT

Grand Rock M-624 Type 2 Muffler for GMC 8.5" x 30.25" 2.75 IN - 3" OUT

MSRP: $627.26

$369.76

Free Shipping

M-722 Type 2A Muffler Bluebird GMC 8.7" x 30" 2.5" IN-3" OD OUT

Grand Rock M-722 Type 2A Muffler Bluebird GMC 8.7" x 30" 2.5" IN-3" OD OUT

MSRP: $734.40

$497.50

Free Shipping

M-878 Type 1 Muffler for Freightliner 11" Round x 36" 3" IN 4" OUT

Grand Rock M-878 Type 1 Muffler for Freightliner 11" Round x 36" 3" IN 4" OUT

MSRP: $730.27

$369.77

Free Shipping

Muffler 8.5 Round x 19.5 Long - 3"ID in/out Q-164-15

ShuttleWorth Muffler 8.5 Round x 19.5 Long - 3"ID in/out Q-164-15

MSRP: $399.77

$285.41

6 products total

HOURS OF OPERATION
Customer Service Hours:
Mon-Friday 8:30am-5:30pm EST
Sat-Sunday Closed

Online Sales Hours:
Mon-Thurs 8:30am-7:00pm EST
Friday 8:30am-6:00pm EST
Saturday 8:30am-5:30pm EST
Sunday Closed

833-773-3039 sales@truckpipesusa.com

Helpful Links

Popular Brands

© 2026 TruckPipesUSA.com - Truck Exhaust Pipes & Components Made in the USA.

Your cart