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2001-04 6.6L LB7 GM Duramax Exhaust Kits

The 2001-2004 6.6L LB7 GM Duramax's came factory equipped with a 3.5" turbo back aluminized exhaust with a catalytic converter and muffler. While this system is reasonably adequate for stock to mildly ... read more

Grand Rock Build Your Own Cab Back Complete Dual Stack Kit GR-DPU-4SK-Main 0.00 Grand Rock Build Your Own Cab Back Complete Dual Stack Kit Grand Rock DPU-4SK Get everything you need to install a Grand Rock Dual Stack kit onto your truck! Grand Rock Dual 5" Stack Bed Kit GR-DPU-5SK-main 0.00 Grand Rock Dual 5" Stack Bed Kit Grand Rock DPU-5SK
$ 414.62 2050-01-01
Power Products carries the Grand Rock Dual 5" Stack Bed Kit
Grand Rock Dual 6" Stack Bed Kit GR-DPU-6SK-main 0.00 Grand Rock Dual 6" Stack Bed Kit Grand Rock DPU-6SK
$ 438.35 2050-01-01
Power Products carries the Grand Rock Dual 6" Stack Bed Kit
Grand Rock Dual 7" Stack Bed Kit GR-DPU-7SK-main 0.00 Grand Rock Dual 7" Stack Bed Kit Grand Rock DPU-7SK
$ 462.08 2050-01-01
Power Products carries the Grand Rock Dual 7" Stack Bed Kit
Grand Rock Build Your Own Cab Back Complete Single Stack Kit GR-SPU-4SK-Main 0.00 Grand Rock Build Your Own Cab Back Complete Single Stack Kit Grand Rock SPU-4SK Get everything you need to install a Grand Rock Single Stack kit onto your truck! Grand Rock Single 5" Stack Bed Kit GR-SPU-5SK-main 0.00 Grand Rock Single 5" Stack Bed Kit Grand Rock SPU-5SK Power Products carries the Grand Rock Single 5" Stack Bed Kit Grand Rock Single 6" Stack Bed Kit GR-SPU-6SK-main 0.00 Grand Rock Single 6" Stack Bed Kit Grand Rock SPU-6SK Power Products carries the Grand Rock Single 6" Stack Bed Kit MBRP 4" Exhaust-Single Outlet-Cat Back 01-05 6.6L GM Duramax LB7 / LLY MBRP-S6000AL-M 0.00 MBRP 4" Exhaust-Single Outlet-Cat Back 01-05 6.6L GM Duramax LB7 / LLY MBRP Exhaust S6000AL Diesel Power Products now sells MBRP 4" Exhaust-Single Outlet-Cat Back for 01-05 6.6L GM Duramax LB7 / LLY S6000304 / 409 / AL MBRP 4" Exhaust-Single Outlet-Down Pipe Back 01-04 6.6L GM Duramax MBRP-S6004AL-main 0.00 MBRP 4" Exhaust-Single Outlet-Down Pipe Back 01-04 6.6L GM Duramax MBRP Exhaust S6004AL Diesel Power Products now sells MBRP 4" Exhaust-Single Outlet-Down Pipe Back 01-04 6.6L GM Duramax MBRP 4" Exhaust-Dual Outlet-Down Pipe Back 01-04 6.6L GM Duramax MBRP-S6006AL-main 0.00 MBRP 4" Exhaust-Dual Outlet-Down Pipe Back 01-04 6.6L GM Duramax MBRP Exhaust S6006AL Diesel Power Products now sells MBRP 4" Exhaust-Dual Outlet-Down Pipe Back for the 01-04 6.6L GM Duramax LB7 Magnaflow 16930 4" Cat-Back Single Outlet Exhaust 01-05 6.6L LB7/LLY GM Duramax Crew Cab, Long Bed MF-16930 65.00 Magnaflow 16930 4" Cat-Back Single Outlet Exhaust 01-05 6.6L LB7/LLY GM Duramax Crew Cab, Long Bed MagnaFlow Exhaust 16930 Diesel Power Products carries the Magnaflow 4" Cat-Back Single Outlet Exhaust for 01-05 6.6L LB7 / LLY GM Duramax Crew Cab, Long Bed 17931 / 16931 / 16930 Silverline Dual Outlet 4" Turbo-Back 01-04 6.6L GM Duramax LB7 CS103 SLV-CS103409 100.00 Silverline Dual Outlet 4" Turbo-Back 01-04 6.6L GM Duramax LB7 CS103 Silverline Exhaust CS103409 Diesel Power Products now sells Silverline DUAL OUTLET-Turbo Back 01-04 6.6L GM Duramax LB7 CS103

The 2001-2004 6.6L LB7 GM Duramax's came factory equipped with a 3.5" turbo back aluminized exhaust with a catalytic converter and muffler. While this system is reasonably adequate for stock to mildly powered trucks, a larger diameter system or higher flow system from Diamond Eye, FLO~PRO, Magnaflow, MBRP, or Silverline is mandatory on any Duramax equipped with even mild upgrades, or for those towing heavy loads. And of course, there are other benefits to adding an exhaust kit besides purely functional, aftermarket kits not only sound good, but they look even better, especially with a nice tip to finish it off. 

We offer several different configurations for your new exhaust kit. We offer a cat back system, for those looking for a simple installation with great sound, as well as a turbo direct pipe back that eliminates the catalytic converter, considered an "off-road" kit. For those looking to also replace the factory flattened out turbo direct pipe, we offer several high flow units that are sold separately from the exhaust kits. And for those looking for something even more unique, try out a set of exhaust stacks by Grand Rock. Imagine a set of 6" Bullhauler turnout stacks protruding from the bed! And you wouldn't believe the shuddering sound they produce, either!
As always, if you have any questions about which exhaust is right for you and your truck, do not hesitate to give us a call or send an e-mail to [email protected] and we would be happy to assist.

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