Looking for aftermarket parts to modify or upgrade your 2001 GMC Sierra 3500 with downpipes? At Tunersports.com we carry a huge selection of the top name brand performance downpipe parts and accessories for your Sierra 3500.
Whether you have a 2001 GMC Sierra 3500 in SL to SLT trim we have you covered. We have 4 downpipes available to mod your Sierra 3500. All parts have free shipping to the Continental US 48 States.
 IN STOCK - LOW 49-04093Optimize your 01-04 LB7 GM diesel's airflow to improve throttle response with aFe's ATLAS 3" turbo down-pipe.Constructed from 3" mandrel bent steel tubing for maximum flow, the larger tube diameter and smooth transition bends allow increased airflow between your OE turbo and exhaust to reduce EGT's ... aFe Downpipe 2001-2002 GMC Sierra 3500 SL 2001-2004 GMC Sierra 3500 SLE / SLT $222.75 SALE |
 OUT OF STOCK 321055Diamond Eye Manufacturing is recognized as being one of the most modern and progressive companies in eastern Oregon. The company has invested heavily to incorporate several CNC mandrel bending machines and support equipment, Enabling us to produce the finest exhaust components in today's marketplace... Diamond Eye TURBO-DIRECT 3in AL CHEVY LB7 DURAMAX 01-04 5 BTWN TURBO & F PIPE TRANS DIPSTICK MOD REQ 2001-2002 GMC Sierra 3500 SL 2001-2004 GMC Sierra 3500 SLE / SLT $365.30 |
 IN STOCK GM8425Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sal... MBRP 01-04 Chev/GMC 6.6L Duramax 3in Turbo Down Pipe Black 2001-2002 GMC Sierra 3500 SL 2001-2004 GMC Sierra 3500 SLE / SLT $246.44 |
 IN STOCK GMCA425Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sal... MBRP 01-04 Chev/GMC 6.6L Duramax 3in Black Turbo Down Pipe 2001-2002 GMC Sierra 3500 SL 2001-2004 GMC Sierra 3500 SLE / SLT $237.14 |