Skip to main content

Duramax LB7 Turbo Downpipes

LB7 Duramax Downpipes 2001-2004 


Whether you're looking for a stainless, Pro Series or Downpipe exhaust system, or a simple and affordable single outlet aluminized system, you can be absolutely assured that you'll never have an exhaust install as easily as these companies. No matter which system you are after, you can rest easy knowing you've made the right decision with Toxic Diesel Performance and it's manufactures.

Diamond Eye Performance 

Diamond Eye Duramax 3" Downpipe 
Diamond Eye Performance has developed a Down pipe for the 2001 - Early 2004 Chevy/GM LB7 Duramax diesel exhaust systems. It features a CNC machined turbo connection flange for precise fit, 3" mandrel bent aluminized tubing for smoother flow from the turbo and is wrapped with "Thermo-Tec" exhaust insulating header wrap for reduced EGT's. Incorporate this with one of our "Quiet Tone" exhaust systems for maximum exhaust flow and performance from the "World's Toughest Diesel Exhaust."
LB7 Duramax Downpipe PN/321055 years 2001-2004 $251.00



MBRP Exahust Systems 

MBRP Duramax 3" Downpipe 
Now Duramax LLY/LBZ/LMM owners have the ability of connecting the turbo and aftermarket down-pipe back exhaust system by removing the restrictive stock pipe pictured below. The MBRP down pipe provides a smoother flow from the turbo resulting in lower EGT’s and increased performance. The down pipe is a relatively easy install due to the precision bends that you’ve come to expect from MBRP.
LB7 Duramax Downpipe PN/GM8424 years 2001-2004 $164.00

Magnaflow Exhaust Systems

Magnaflow Exhaust Systems
The Magnaflow 15398 Turbo Outlet Downpipe for your 01-04 LB7 Duramax is built from 3" mandrel bent stainless steel & features a durable high temp thermal coating. A fiberglass based heat wrap is also used to provide further insulation from the passenger compartment and firewall due to the closer proximity of the larger, higher flowing pipe. 
LB7 Duramax Downpipe PN/15398 years 2001-2004 $145.00


PPE Diesel Stainless Steel 

Pacific Performance Engineering (PPE Diesel)
Pacific Performance Engineering 2001-2004 GM 6.6L Duramax 3 Inch LB7 Stainless Downpipe. The PPE 117000400 3" Stainless Steel Downpipe for your 01-04 GM 6.6L Duramax allows you to removed your crushed oval stock downpipe and replace it with a smooth round, long lasting 304 stainless steel down pipe. Spiral wrapped with titanium woven thread for superior heat that's held in place with stainless steel clamps.
LB7 Duramax Downpipe PN/11700400 years 2001-2004 $215.00


Sometime is hard to make a decision on a diesel downpipe, So we made it for your, make a choice and find the downpipe that fits your needs or your wallet price range from cheap to expensive. Duramax Diesel Performance Downpipes.


Toxic Diesel Performance 
Diamond Eye Performance
Magnaflow Exhaust Systems
MBRP Exhaust Systems
Pacific Performance Engineering 






Popular posts from this blog

Duramax 6.6L Valve Lash Adjustment

Duramax 6.6L Valve Adjustment  Duramax Diesel Pickup Truck This is one method used to set the valve lash on your duramax engine Valve adjustment should be performed anytime the heads are removed. It's also good practice to adjust valves during service that require valve cover remove.  TDC (Top Dead Center) First start with, locating the timing mark on the front engine cover and the harmonic balance.  Rotate the crankshaft in order to bring the number 1 cylinder to TDC (Top Dead Center) of the exhaust stroke. This mark should be aligned with the mark on the engine.  To adjust the valves, start by loosening all the jam nuts with a 14mm wrench, you will also need a flat screwdriver to make the adjustments. Adjust the valve using a .012" feeler gauge Use your .012” feeler gauge between the rocker arm and the valve bridge as pictured. The correct setting is had when there is slight resistance when moving the feeler gauge. It should not...
Read more

How to Remove LB7 Duramax Fuel Injectors Step By Step Instructions

LB7 Duramax Diesel 6.6L R&R Remove and Replace  Working on any automobile engine can be intimidating, and that is the very reason why mechanics stay in business, However some tasks that seem intimidating are not actually that difficult if you have the right tools and the right knowledge to complete the task at hand, The following instructions are on how to remove LB7 Duramax Fuel Injectors. This task is often considered a difficult process to complete, but these instructions will break down the process and make this task seem simple. Duramax Diesel LB7 Engine 2001-2004 GMC or Chevrolet Pick-up Truck  Drain the Coolant find the drain valve on the passenger side of the wheel well and drain the coolant. To capture the debris,use a bucket and a cloth for a filter. Caution: This step is very important to ensure the combustion chamber won't fill with coolant during the last step of removing the  fuel injectors if an injector cup pull out during thi...
Read more

Duramax Glow Plugs Operation Glow Plug Relay

                                                    Cold Weather Starts and Glow Plugs  Glow Plug System Description Duramax diesel engine, air alone is compressed in the cylinder. Then, after the air has been compressed, a charge of fuel is sprayed into the cylinder and ignition occurs, due to the heat of compression. Eight glow plugs are used as an aid to starting. The glow plug initial ON time will vary based on the system voltage and temperature. Lower temperatures cause longer ON times all the times. The ECM provides glow plug operation after starting a cold engine. This post-start operation is initiated when the ignition switch  is returned to Run, from the Start position. This operation helps clean up excessive white smoke or poor idle quality after starting. Control of the instant start system, glow plugs is determine...
Read more