2001-2004 LB7 Duramax Up Pipes & Exhaust Manifolds

These stainless steel up-pipes for the 2001-2004 6.6L LB7 Duramax engine are a great upgrade over the stock up-pipes. The mandrel-bent up-pipes flow better than the factory-installed pipes, and they are also less likely to crack and cause restrictions or power-robbing pre-turbo exhaust leaks. Th..

Replace the lightweight, leak-prone passenger side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will not crack and leak like OEM. Increase Turbo spool up and decrease EGTs. This up pipe is built to clear a conventional downpipe behind the engine in single ..

DHD's high flow manifold bundle increases exhaust air flow over 55% without any port modifications. Additional gains can be found in port matching and port blending. Our manifolds are cast from the same high Silca Iron that's become standard in the high flow manifold market. Included in the high flo..

These full featured OEM fit up pipes are an excellent value! These are brand new and include all the high flow, high quality features your looking for at half of a new GM LB7 up-pipe price. DHD has taken OEM replacement to a new level. This stock replacement up pipe allow 53% greater flow than st..

Replaces the factory exhaust up-pipes (exhaust manifold to the turbo) which are prone to leakage due to the deterioration. BD up-pipes are designed to minimize restriction to the turbo utilizing internally shielded expansion bellows. The BD up-pipes are a durable, longer-life replacement for this co..

*NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))**This product is ONLY designed for closed course racing where it is legal to do so. Any other use w..

*NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))**This product is ONLY designed for closed course racing where it is legal to do so. Any other use w..

Kit includes Gaskets and Hardware!Extended Length Up Pipe SetHigh Flow Manifolds RequiredThis extended length high flow up pipe set allows 53% greater flow than stock and is a designed to work with DHD or PPE high flow manifolds. Unlike factory parts, DHD's up pipe is manufa..

Kit includes Gaskets and Hardware!Stainless Duramax Up Pipe SetBest FIT! Best Value!NO COREThese full featured OEM length up pipes are an excellent value! These are brand new and include all the high flow, high quality features your looking for at half of new GM LB7 up-pipes.DHD has taken OEM replac..

*NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))**This product is ONLY designed for closed course racing where it is legal to do so. Any other use w..

Max-Flow Up-pipeFits 2001-2004 Silverado/Sierra w/Federal EmissionsPart# MAX-PAL-0104*NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3))**This product ..

Max-Flow Up-Pipes Fits 2001-2004 Silverado/Sierra Duramax w/Federal Emissions Part# MAX-ARAL-0104 *For use with OEM length/style manifolds only* *NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE..

Max-Flow Performance Series Duramax Manifolds& Up Pipes Fits 2001-2004 Silverado/Sierra 6.6 Duramax w/Federal Emissions Part# MAX-PMF-0116 + MAX-ARAL-0104 *NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGA..

50 States Emissions Legal (E.O. D-701-34)PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow. The entire Manifold and Up-Pipe exhaust system..

Replace the lightweight, leak-prone, 1 5/8" OEM up pipes with these heavy-duty 11 gauge 2" Stainless up pipe kit. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGTs. This kit is for use with single turbo applications and factory exhaust manifolds.IN..

Backordered with No ETA   **Updated on 08/08/2024** Max-Flow Race Series Manifold & Up Pipe Kit Fits 2001-2004 Silverado/Sierra 6.6 Duramax w/Federal Emissions Introducing The Max-Flow Diesel Up Pipes and Manifolds. Providing up to an incredible 55% increase in air flow ove..

Fits: 2001-2016 Gm 6.6L Duramax LB7/LLY/LBZ/LMM/LMLThe AFE Bladerunner Exhaust Manifolds feature a bolt-on design and will increase power, performance, and exhaust flow in your 01-16 GM Duramax. Machined port: These manifolds have both the inlet and the outlet ports machined to matched the..

Max-Flow Down Pipe Support BracketFits 2001-2016 Chevrolet/GMC Silverado/Sierra 6.6L Duramax*See Fitment Notes Below*Part# MAX-DPB-STOCKIt is very common for the OEM bracket to crack and fail on the original up pipes, now we offer an upgraded replacement that is fabricated from 3/16" 304 stainless s..

Fits: 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LMLThis Dorman Left Side Exhaust Manifold is the perfect replacement for your 2001-2016 GM 6.6L Duramax. The exhaust manifold was built with precision to a exact fit and function of the original factory manifold.  The cast iron build helps decreas..

Fits: 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LMLThis Dorman Right Side Exhaust Manifold is an exact replacement for your 2001-2016 GM 6.6L Duramax. These Exhaust Manifolds come with the necessary components for an easy installation. Since its the exact replacement, it will be the perfect fit that..

The GM 12624683 Replacement Passenger Side Exhaust Manifold is a direct replacement for your 2001-2016 GM 6.6L Duramax. Over time, due to heat cycles and corrosion, the factory exhaust manifolds can crack or become damaged. This manifold is a factory replacement for your stock one. Gaskets not ..

If you have original GM Manifolds and PPE Up-Pipes, this bracket (stay) secures your PPE Down-Pipe and prevents movement. An unsecured Down-Pipe that moves can come in contact and damage the Up-Pipe bellow even under normal driving conditions. This movement can also contribute to metal fatigue and c..

Replace the lightweight, leak-prone Driver side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will not crack and leak like OEM. Increase Turbo spool up and decrease EGTs. Will work with ANY Turbo setup, single or compound, compatible with factory exhaust ma..

WCFab’s 2001-2016 Duramax Billet Exhaust Manifolds replace the restrictive factory cast parts with high-strength, TIG-welded high-flow billet steel components designed to enhance exhaust flow characteristics, improving turbo spool up, lowering EGTs and increasing power and economy. These manifolds a..

Replace the exhaust manifold in your 2001-2016 GM 6.6L Duramax with the XDP Driver Side High-Flow Exhaust Manifold XD342. The XD342 has an unrestricted high-flow design that eliminates the "dented" or "kinked" driver side exhaust manifold that comes factory equipped on the 2001-2010 GM 6.6L Dur..

50 States Emissions Legal (E.O. D-701-34)PPE High-Flow Manifolds are made from cast, high-sil moly. The PPE Up-Pipe bellows are internally-sleeved, made from aircraft-grade 304 stainless steel, and designed with increased inner diameter for higher flow. The entire Manifold and Up-Pipe exhaust system..

PPE has taken OEM replacement to a new level. All PPE OEM Up-Pipes allow 53% greater flow than stock. PPE OEM Up-Pipes are a direct bolt-on to your factory manifolds. Unlike factory parts, PPE OEM Up-Pipe are manufactured from 11-gauge 304 stainless steel and includes our superior PPE 304 stainless ..

All PPE OEM Up-Pipes create a 53% greater flow than stock. The PPE OEM Up-Pipes are a direct bolt-on to your factory manifolds. Unlike factory parts, PPE OEM Up-Pipes are manufactured from 11-gauge 304 stainless steel, and each style includes our stainless steel, internally sleeved bellows..

DHD's double stitch titanium manifold blankets raise the bar for quality, fit and protection. These are NOT your average Amazon heat blanket. Our blankets are MADE IN THE USA with 2 ultra thick, tight woven silica imbedded layers of fiberglass. We have consistently had these blankets at 1,800°F with..

If you are looking for a replacement passenger side up-pipe due to a blown out bellow, Rudy's new up-pipe is your solution. With high-temperature coating, high-performance bellow and laser cut flanges, it's guaranteed to fit perfectly and last forever! This pipe works on LB7 trucks. If you do your ..

GM has introduced a new manifold that will flow better then the original OEM unit.  Reduced pinch area near steering shaft for a nearly ideal flow.  Greatly increased flow charecteristics over the original unit.    A great alternative to higher priced after market manifolds..

BD “Full Bore” 01-07 Chevy/GM Duramax LB7,LLY, & LBZ Exhaust Manifold Improve exhaust flow, reduce exhaust gas temperature (EGT) and realize greater power gains with the new “Full Bore” driver’s side exhaust manifold for the ’01-’07 GM Duramax.You may not know it, but the factory driver’s side mani..

Pulse Flow Exhaust Manifolds - 2001-04 6.6L Duramax Diesel TS Pulse Flow Exhaust Manifolds for the 2001 to 2004 6.6L Duramax offer far less restriction than stock manifolds and up-pipes. Channel areas were increased dramatically resulting in a 26% increase in airflow. Not only will the Pulse Flow m..

Replace, worn, rusted or broken up pipe hardware with DHD's large flange up pipe bolts. Our phosphate oil coated 10.9 bolts meet or exceed all OEM specs. Their extra large flange guarantees a perfect clamp load and seal every time.   Pair these bolts with our PPE stainless gaskets for a leak free,..

DHD 035-12637647 LML Duramax Diesel Driver Side Exhaust Manifold W/ Heat Shield This is an OEM GM driver-side exhaust manifold off of the LML Duramax but will work on all Duramax engines from 2001-2013. This manifold does not have the restrictive factory kink like the previous generations so it wil..

NOTE! CANNOT Ship to California The HSP 2" Replacement Up-Pipes are an excellent high flow upgrade to replace the restrictive factory pipes on your 2001-2004 GM 6.6L Duramax LB7. The 2" design not only increases flow and power, but also reduces EGT's! Heavy wall 304 stainless steel cons..

The perfect addition to any exhaust manifold replacement or upgrade on your Duramax. Our phosphate & oil coated bolts meet or exceed OE specs. Paired with the bolts are 16 Stainless Steel ARP Washers for the perfect torque and corrosion resistance. This kit is extremely popular with the techs in..