Exhaust Manifold Kit w/ Up-Pipes (2001-2016 Duramax 6.6L LB7/LLY/LBZ/LMM/LML)

2001-2016 Duramax

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Product Information

Product Description

Transform the performance of your 2001-2016 Duramax 6.6L engine with the DIESELR Exhaust Manifold Kit w/ Up-Pipes. Built to handle the toughest conditions and maximize exhaust flow, this kit is designed for drivers who demand more power, better efficiency, and unparalleled reliability from their diesel engine.

Constructed from heavy-duty materials, the Diesel Lion manifolds and up-pipes are engineered to withstand extreme temperatures and high stress, providing a significant upgrade over restrictive factory components. The improved design minimizes backpressure and enhances exhaust flow, resulting in quicker turbo spool-up, lower EGTs (exhaust gas temperatures), and a noticeable boost in horsepower and torque.

This comprehensive kit includes high-flow exhaust manifolds and thick-walled up-pipes, designed to work together seamlessly for a perfect fit. Whether you're towing, racing, or just want the best for your truck, this kit is your ultimate solution for improved performance and longevity.

Features:

  • High-Flow Exhaust Manifolds: Optimized to reduce backpressure and maximize exhaust flow, enhancing power and efficiency.
  • Thick-Walled Up-Pipes: Built to resist cracking and handle high-heat environments, providing reliable performance under load.
  • Durable Construction: Made from premium materials to withstand the toughest conditions and ensure long-lasting use.
  • Complete Kit: Includes both manifolds up-pipes, hardware and gaskets, designed for a direct fit and hassle-free installation on all 2001-2016 Duramax 6.6L models.

Unlock the full potential of your Duramax with the Diesel Lion Exhaust Manifold Kit w/ Up-Pipes and experience the difference in performance, durability, and reliability every time you hit the road.

 

Powerlevel Options

Product Compatibility

Chevy / GMC
Duramax
2001-2004 LB7
Chevy / GMC
Duramax
2004.5-2006 LLY
Chevy / GMC
Duramax
2006.5-2007 LBZ
Chevy / GMC
Duramax
2007.5-2010 LMM
Chevy / GMC
Duramax
2011-2015 LML
Chevy / GMC
Duramax
2015.5-2016 LML

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Exhaust Manifold Kit w/ Up-Pipes (2001-2016 Duramax 6.6L LB7/LLY/LBZ/LMM/LML)

2001-2016 Duramax
Exhaust
USD999.99
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Apr 02, 2025
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finally got it done. amazing power difference and I think the fuel economy will be better when I get through playing with it.

Clayton

Keenan

Hats off to diesel lion. I purchased my 6.7 ford tuner approximately three weeks ago I received my tuner within three days of ordering, which was fantastic. Wasn’t expecting it for a week to a week and a half. when I received it, I opened up the box to see what came with it and noticed the gauge wasn’t in the box was planning to put it on the upcoming weekend was very disappointed at the time. I thought I was gonna have a heck of a time trying to get a hold of them and resolve the issue I first called them no answer then email them got an answer with an hour after hours. I sent them photos of what I received in the box and the person that have been talking to said he would send me one out, I thought well it’ll be another week or two before I received it. I got it within two days again very very happy with their response and concern they sent me a whole new unit very appreciative to diesel lion the way they handled it very very happy with them. Long story short if you need to order tuners or anything and need good service order from diesel lion they will take care of you. Thank you again diesel lion. If there’s anything else I need I will definitely order through them. Thanks again Cardel Howell.

Cardel Howell

Howell

The kit works great. The DPF and DEF deletion pipes fit perfectly. The EGR Kit had everything I needed and the RaceME Ultra was easy to install. The way the truck runs now is awesome, The horsepower and fuel mileage was exactly what I was looking for. The fuel mileage on my 2017 Dodge with the 6.7 cummins with from 15-16 MPG to 24-26 MPG on the highway and from 11-12 to 18-19 in town. I'm extremely happy with my purchase. Thank you.

Dave

Peevey

This kit was the best thing for my truck it like a brand new truck run so good an is bad ass fast now thanks again for great kit an service

Jeff

Watkins

So far so good

Jeff

Jordan

The kit was great and super easy to install. I didn't see the transmission tune.

Ralph

Franks

THANK YOU!

Shane

Hello, your kit worked awesome. No issues at all. Truck runs great. Thank you

Sun

Man

Awesome fast shipping

Mike

Bumpus

Thank you this worked it was file E! Tunes are great

Nick

Coley

John, I'm a big thumbs up on your team overall. Very pleased with the level of support prior to, during, and after the changes I made. The number one differentiator between your team and others is the ability to pretty quickly get a live person on the phone and if needed for them to remote into the laptop connected to the vehicle. There were a few issues, but quickly addressed and or your guys confirmed for me what was happening and that all was well and as expected. Good work by all! A+ so far! Thanks Chris

Chris

M

I love all my products and my truck runs great

George

House

Everything worked perfect, on time, and you even answered an email overnight!!! You got my 5 Stars guys!!! 👍 Thanks for a great product!

Jeff

Delk

You did a great job 🤙

Oliver

Large

Worked great, will use again if needed!!

Dale

Cagley

Great product, had everything I needed. Installation went great, got it all done myself in my garage in about 6 hours. Truck runs awesome with engine and trans tunes.

Andy

Kosevich

Great company to deal with will definitely use them again

mkhot

shottra

I pull a 48ft car hauler with my 2014 Ford 1ton, 5.9mpg and the truck would overheat. Installed the delete kit, no more overheating 12.8mpg. AWESOME THANKS

Bryan

Aaron

So I had a special case. I needed a tune for a 2008 C5500 Duramax. This is obviously a commercial truck. They were able to send me the handheld. My mechanic downloaded the parameters from the truck. He sent them off. I had a custom tune back in 2 days. The truck now runs great. Thanks to Dyno Diesels for a custom tune. When our government is doing everything they can to ruin diesels. Dyno has your back.

Roman

Parsons

I am very pleased with everything purchased from here. All went smooth with no installation issues. Thank you for making my truck awesome!

Gary

Morrison

The products that I bought from your company are outstanding and your customer service is second to none thank you for all of your help. I will recommend your company to everyone. THANK YOU VERY MUCH YOU GUYS ARE AWESOME

James

Milburn

Exhaust came in on Tuesday. Well packaged and perfect box. Got the truck completely done today. Slow day at the shop so I got it all done. I want expecting that much power honestly. What a difference. Already 3.5mpg better. Truck is a monster now. Shocked really. Sounds sick too!!!! Thank you guys for the product, communication. Perfect. It's like a new truck.

Harrison

Lansdale

Everything I needed was in the kit I was very happy with Everything except the shift on the fly selector. I spent 2 hours installing it in a very inconspicuous location. After I installed it we could not get the proper voltage reading for it to work correctly with my truck. So now I have it still mounted in my truck but I had to unhook it so it was a $150 item that I won't be able to use. But everything else worked very well and I am pleased with the outcome of the installation. Thank you for your products. Will be purchasing more form your company in the future

Bobby

Holt

Great product will be ordering more very soon!

Jaron

Hastings

The product was exactly as pictured and was what was expected. The shipping was late and I paid $350 for overnight shipping and it ended up being two days and I still had to go pick it up from the shipper (FedEx).

Tyler

Cline

Great job as always! Fit perfect and fast shipping! Thanks!

Chris

Taunton

Instructions would be awesome. But overall very happy with products performance

Kyle

Roose

Ok. We did the download from your email. TRUCK RUNS GREAT!!! THANK YOU!!!

Michael

Yes very happy with both my orders

Nicholas

Estes

You have a very organized company it came right on time thank you

Mary

Clark

So far exactly what I want to achieve, smooth, no surging, trans is solid. The delay between the 3rd and 4th is a bit long. I was hoping for an earlier shift.

Mike

G

Everything works great and the whole process was much more simple than I expected. I will definitely be recommending you to others. Thank you!

Brent

Kramer

Small issue with shipping on time but 5 stars

Richard

Parks

%100 great service awesome timing on parts!

Jesse

Ward

Very happy with the kit, everything fits and performs well.

Joe

Murphy

The kit was just what I needed. The only thing is there one of the hose connections that is plastic and should be metal. I swaped it out with a metal one and all is good. Thanks for shipping the kit quickly.

Chad

Loker

Very happy with everything 5 stars

Kelly

Hatfield

Everything I have ordered so far has installed and functioned without fail. Shipping has been prompt. Customer service has been knowledgeable. I would recommend these products.

Joe

Murphy

Did exactly what I wanted.... And would definitely recommend

Greg

Borgman

I just finished installing the RaceME Ultra and complete EGR, exhaust system kit. This woke my truck up like never before and it runs great. Technical support was a great help and Michael answered all my questions in a timely manner. Looking forward to many miles with no check engine lights. Thanks again for all your help.

Doug

Miller

Very happy with my purchase great products thank you and I loved how fast it arrived thanks again

Peter

Rodriguez

Everything worked out perfectly. Super happy.

Rian

Mckinnon

Great kit. Truck runs great. I went from 16.2 highway mpg to 19.9 highway mpg. The kit did not substantially increase exhaust noise, the truck is still quiet for a diesel. I am very pleased. I can now go down to grand isle fishing and not have to worry about my truck saying in 50miles your truck will only go 50 mpg. What a relief!

Steven

Unkel

Thanks y'all Done great

John

Rodge

Thank you, you guys were great to work with and my order came 2 days before I thought it was.. I will definitely use you guys again thanks again

Ted

Perry

You guys did awesome!!!

Whitney

Schiesser

I am extremely happy with my product I ordered. Easy installation and everything was well packaged.

Ray

Moyer

Could have been better on shipping notifications on tracking numbers. I had to keep on the situation of my order by constantly emailing for tracking#'s but I finally got my products and I am very happy with the end result.

Chris

Click

Everything came in and seems to work just fine. Thanks

Greg

Rinkes

Initially hesitant about deleting, I found that it turned out to be the best thing I could have done. As a result, I no longer experience exhaust service lights, and there is no lagging when I step on the accelerator. Additionally, I have noticed an increase in fuel mileage.

Adam

B

Great company to work with. I had a problem with my order and they took care of it right away. I would recommend them to all my friends.

Dave

S

The product worked perfectly, solved all my problems. Thank you.

Michael

Gilbert

You guys are great! ")

Betty

Sutherland

I'm waiting on the rest of the stuff but the employee or employees I've been dealing with have been super kind and helpful. Thanks

Tom

Fern

My feedback on Jeep Cherokee | Ram 1500 3.0L Eco Diesel EGR DPF DEF Delete Kit: Very happy with the setup. Some issues I had was the exhaust hitting the transmission mount. The bend that it comes with was not enough so it rubs. It needed better instruction for the "Jeep" model EGR Delete. All I could find was for the Ram. The Ram is slightly different than mine is, routing back to firewall heater core hose, mine does not have that and I had to simply cap a line off. The upper had the holes drilled in wrong spots for my metal tube coolant input. I just cut your bracket and deadhead the input side from just the loose piece. Otherwise I am happy I do not have the crap egr,def,and the dpf is gone!!!

Eric W Fulton

Will give these guys a 5 star plus! Thanks for the discount and quick shipping. Highly recommended.

Neil

Mayes

Great!

Don

Peters

Kit was great so far 5" was very tight at the down pipe had to bend it on frame side. And had to weld up the clamps that hold exhaust together they were a little chincy other than that no complaints at all.

Jeramie

Speck

Works great thank you so much 5 stars

Jamie

Moore

Awesome company, great products/tunes!! Very fast customer service!

Brock

M

These guy(s) are great! Knowledgeable, friendly, helpful. Highly recommended.

Ken

Kilby

The truck is running pretty good now thanks to your tunes and email help. I ran the 60hp tune for a few days then loaded the 100hp. Ran a tranny learn session out on the interstate immediately after the flash. Truck runs better on the 100hp than the 60hp tune in my opinion. No rolling coal, just a little "coal dust" when accelerating. The mileage is fantastic compared to what it was getting before the turbo replacement and tuning. It was 13-14 mpg before the swap. Now running the 100hp tune, I'm getting 21-22mpg. Unbelievable! On a fresh refuel, I reset the mpg display on the truck. The first 125 miles saw 22.5 mpg! After five days of mixed driving, it was still holding 21.8 mpg. Now, the big question is: How accurate or valid is the PCM calculation and display? Who care? Before it was reading 13-14 m mpg. Now it's showing 21.8 mpg. That makes me happy and that a good thing. I will run a manual calculation when I refuel again in a few days to cross check. Thanks again for your help and patience.

Ken

Kilby

10/10. I had a little mishap with the EGR kit getting shipped but after a late-night email, that was responded to extremely quickly. Customer service top notch. Install quickly and easily. It is a great product and a great company.

Bob

Mcgee

Packages arrived and in good shape. When I had any questions someone would follow up with an answer. My RaceMe Ultra was easy to install and had no problem with the EGR delete kit. I did have a problem with my pipes due to the bend in the pipe that replaces the muffler. Only 2 ways I could put it. The bend up or down would not let me hook up my hanger mounts for support.

Geoffrey

Rose

Excellent!!!!! Everything worked out perfect

Mitchel

Johnson

Great! Thanks!

Goat

Snob

I received my order quickly and it was very easily installed. I was given the wrong tunes for my vehicle but it was resolved in less than 24 hours!

Brett

Nichols

Truck is back to running like it should thanks

Johnny

Quarles

The best product and excellent customer service!

Jeff

Boudreau

Very pleased with everything I got everything went pretty smoothly and is working great! Thank you guys! Would definitely shop again or suggest to others. Only complaint is on the 5-in downpipe it is a rather tight fit and kind of touches the frame there maybe a slight Factory dent or something

Jude

Gray

Excellent service and parts... Fast shipping!

Jonathan

Coo

Happy

Karl

Patay

EGR kid was a breeze, for me at least. Everything I needed was in the kit. Only thing I want to say to help for future kits, is that the gasket for the intake neck/tube, it was bent and on the verge of tearing. I was able to reuse the original one on my truck since it is a very low mileage truck. Otherwise, thank you and hope I can find something on your website I can use!

Anthony

Bran

I am more than happy with it. I have completed the DPF removal and straight pipen install. I have not removed the EGR. I can say that I have picked up more power and 3 more mpg towing. I have an 8k pound bumer pull camper. There is a little black smoke when I punch it; none if I drive "normal". My wife said it is louder, who asked her. I have been on the fence but your price and the extra $100 off, with free shipping was the factor. Thanks for the entire process from ordering to installation videos.

Scott

Stribling

Everything in the kit ordered worked great! I am a happy customer and will likely purchase again!! Thanks for the great products. Thank you for your time.

Tony

Russ

Works great nice setup

Cristian

Larios

You did very well thank you so much.

Terry

Conk

Very happy

Charlie

Wade

Everything fit and is working very well. Order was delivered faster than expected. Would recommend this kit to others.

Marland

King

Yes I'm very happy with the kit I got it in and it's working great.

Jim

Jones

Exactly what I needed and wanted.

David

Murphy

Everything worked out perfect, instruction very accurate

Cruz

Tovar

I am very pleased with my purchase!! The only thing I wish I would have got was the pyro that goes with it. I'm saving now so I can purchase that in the near future. Thank you so much!

Mark

Lujan

I like it, the install wasn't too bad. Wish it would've came with instructions, that would make it a lot better.

Marcus

Moore

yes working good so far

Steve

Noriega

EFI Live easy to work with! fast shipping! Thank you

CHRIS

SWAIN

Lower RPM when cruising on the highway at 70! 1600 RPM and also a nice gain in mileage.

Brian

J

Everything was handeld very well and all the stuffed worked no problem

Chris

Shires

Awesome! Install wasn't too bad on 2017 Ecodiesel Ram 1500. Truck is much more responsive and should last longer now that I am no longer spewing carbon into my intake manifold.

Daniel

Johnson

Yes 😊

Darrell

McKittri

thanks again the truck runs great went from 27 to 32 mpg

Darwin

Grewe

So far it has done great!!!! Not hard to install

Darin

Ladlie

It was easy and it makes the truck run better

Chris

Lagorga

Thank you all for help and support everything is on truck is running fine and upgraded to the hot and cold intake fuel mileage is so much better went from 9.7 pulling my skid loader to 14.8

Jerry

Polston

Thanks for selling these kits! My truck runs like a champ. It was super easy to update the SCT and flash the ECU. I was a little worried but there was good instructions!

Angel

Proven

Wow what a difference should have installed a raceme ultra years ago. Truck runs great

Paul

Erickson

Perfect I love it

Jose Ramos

Cortez Lopez

5 stars Fast shipping, quick response to my email, excellent products. Tune loaded quickly with no issues and shifting is smooth with the tow tune but I'm still experimenting. I needed a exhaust that wasn't to noisy and yours a worked perfectly and no leaks from the clamps. I did remove the 4 inches from section of straight pipe to fit my long bed crew cab but that seems to be the norm so the same pipe will fit the long bed mega cab. You were a word of mouth recommendation and I'm glad I remembered the name of your company. Thank you for helping me bring my truck back to life.

Kenneth

Polley

Install went awesome, instructions were good and everything went smoother than expected. Thank you.

Anonymous

5 Stars!

Daniel

Johnson