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

2001-2016 Duramax

Add To CartBuy Now
Free Shipping on all Ground Orders!
Thank you! Your order has been received!
Oops! Something went wrong. Please try again.
Instructions
No installation manuals available for this product at this time. Request a manual here.
Shipping

We offer fast and free reliable shipping for all customers to ensure that you receive your products as soon as possible. Shipping generally takes 3-8 days to transit to you depending on where you're located in the US and Canada. Hawaii, Alaska, and other remote areas may take longer and invoke further shipping expense. Please contact us if you're want more information.

Returns

We understand the importance of clarity in our return procedures, both for our customers' peace of mind and for ensuring a smooth process. We've outlined our updated guidelines to facilitate efficient returns here.

On Sale!
Recommended Add-ons

Complete your kit with these upgrades!

No items found.
Choose Your Upgrades
Buy Now
USD999.99

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

Other Information and Resources

Satisfied Customers

Hear what our customers have to say about our diesel parts.

There aren't any reviews for this product yet. Be the first! Leave a review here.
Offroad Recommendations

Other Great Buys

Check out some other products that you might like

On Sale

2004.5-2010 CHEVY / GMC DURAMAX | DOWNPIPE

2004.5-2010 CHEVY / GMC DURAMAX
Exhaust
USD299.99
false
Aug 28, 2026
On Sale

PREMIUM SHIBBY ENGINEERING PLUG KITS

Exhaust
USD199.99
false
Aug 28, 2026
On Sale

2010-2024 RAM CUMMINS CAB CHASSIS | Specialty SCR & DPF RACE Pipes

Exhaust
USD329.99
false
Aug 28, 2026
Product Name
Product Note
Selected Variants
Subscription Title
Product Discount (-0$)
CODE (-0$)
$0
$0
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Your Cart Is Empty
Success message won't be visible to user. Coupon title will be listed below if it's valid.
Invalid code
CODE
Subtotal
$0
Order Discount
-$0
CODE
-$0
Total
$0
Checkout
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

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

Brian

J

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

good tunner worked the way they said.

Bat

Everything went good on the install

BJ

Putman

Hey guys just a shout to you all! Thanks for supplying us with another great kit. Everything went together perfectly and the tuning is awesome! Thank you for another great experience!

Brandyn

Reinf

I really appreciate all the help. I super excited to get the products installed on my truck. You guys are awesome with the quick turn around on the products and customer service.

Jesse

Di Lella

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

Darin

Ladlie

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

Ordering process was great and everything arrived quickly and intact. The GDP tunes seem decent although there is some smoke on level 1 where I wouldn't think there would be any. Overall very satisfied with the product.

C

Gilliam

Works great thank you so much 5 stars

Jamie

Moore

5 star best of the best

Tryhard

Very happy with everything 5 stars

Kelly

Hatfield

Great service. Fast shipping. Great product. Will do business with you guys again!! A++

Joe

Caddick

Very helpt and really like the quick reply's to any question I had Thanks

Steve

Jones

Great product and super nice customer service

David

Hancock

Yes really good love it

Juan

Bravo

Everything was great my order was exactly what I wanted no hassle no problem. Would definitely order again from Y'all again.

David

Woodc

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

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

So far so good

Jeff

Jordan

Awesome parts and shipping

Dan

Tompkins

Worked great, will use again if needed!!

Dale

Cagley

Yes very happy with both my orders

Nicholas

Estes

Works great thanks

Tyler

Birtciel

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

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

Ray

Moyer

I would just like to say thank you for such a great system your team sold me. I had everything I needed and made this kit installation go very smoothly. I was very nervous going into this, my boys kept telling me it will be fine. The Agent 3 device was such an easy install it was crazy. Everything connected very easily and meshed well with my Banks equipment I added with it. When I have heard folks say it will wake up your truck, I had no idea until I started driving it. Completely different truck. Thank you for supporting this equipment and making this high value upgrade a smooth one. I definitely am spreading your name out there.

Gary

Morrison

Hi there and sorry it took me a long time to get back to y'all. I f**king love the way my truck runs and sounds now . Thank

Jay

Thompson

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

Darwin

Grewe

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

Ken

Kilby

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

5 Stars!

Daniel

Johnson

Great!

Don

Peters

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

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

Marland

King

The best customer service in the business!!!!

Brock

Maxwell

My order was shipped right out and I received it quickly. I am very pleased with your service and product. 5 stars!

Chris

Paul

Hey, it all went well the freezer did the trick (on mm3), it all went back to stock and then everything loaded on. It's awesome, I am very happy truck runs like a dream transmission is buttery soft. Very impressed. Thanks for all your help and good service ií will definitely recommend you to my friends. Thank you again

Paul Morgan

Lawrence

Excellent customer service and the process was pretty simple overall (lots of wrenching but so worth it!). We are ecstatic with the improved performance of the truck. Tuner is excellent and easy to understand!

Dianne

Brooks

Great products and lots of good assistance with the purchase!!! Thanks!!!

Ray

Chaple

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

Your service was awesome, I was amazed how fast my order was shipped and the customer representative was very helpful. Thanks again, Steve in Colorado

Steven

Allard

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

Neil

Mayes

Had my tunes and auto agent for about a month now. Super happy with results and wow was the my tuner delivered FAST, practically next day thru FedEx.

Jorge

Torres

Great feedback with issues with software. Very responsive and helpful. Great customer service for products.

Willimam

Alexander

%100 great service awesome timing on parts!

Jesse

Ward

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

Yes very happy with all your service. Thanks

Wayne

Hucke

THANK YOU!

Shane

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

Paul

Erickson

Absolutely amazing customer service and shipping. Have told several people to do business with you. Couldn't be happier. 5 stars all the way

Philip

Triplett

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

Michael

Gilbert

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

Kyle

Roose

Did exactly what it is meant to do... go me back on the road w increased efficiency! Beyond happy with the tuner and it's ability to monitor drivetrain functions while in use! Worth every penny!!

Baros

Works as it should. Quick shipping

Chris

Quacken

You guys are the best, thank you.

Mike

E

Very satisfied with the results of the Tow Haul tune, good service and fast shipping. I do however like talking to someone on the phone more than communication thru email. (I'm just a little old school I guess)

Mike

Moyers

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

CHRIS

SWAIN

Great customer support!

Javier

Hernandez

If I could give you guys a 10-star review I would I've also reached out to a lot of my friends that also drive diesels and forwarding your guys's information to them so that they can purchase the delete kits also a couple of my friends have fleets of trucks so they will be in contact I appreciate you guys thanks for being awesome

Ian

Lewis

Installed this kit a week ago so far it has been doing good. Thanks

Shannon

Braun

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

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

You guys were great. We had a couple of questions, they were answered. Kit was super nice. Tunes were well tuned. Good company to deal with. We will be ordering our deletes from here.

Austin

Euro

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

Very nice, everything was on time and how it supposed to be thanks guys

Valentin

Robl

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

A highly recommended group of people. WIlling to help on what would normally be out of business hours. I'll be coming back for their help in the future.

David

Finn

Product was not really compatible with the C/C as turbo is smaller so GDP will only give me 1 tune. I understand why but, I bought the 5 position switch was so I could adjust power as at times I do not tow and others 30k lbs. Other than that like the tune and GDP tech line was very, very helpful So can't use the 5 position switch but will keep until I install a larger turbo as per GDP. Thanks for the product and it really sounds like a truck now.

Bill

King

Works awesome. Thanks I appreciate you.

Don

Allison

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

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

You guys are lifesavers , everything thing went together perfectly, runs and shifts better than ever and it was delivered the same day I ordered it. You gained a loyal customer and I appreciate the entire process, thanks again

James

Crimm

Yes, I am definately happy with the products and services I purchased from you! The shipping was fast and secure, arriving within 5 days of ordering. Thank you for a great shopping experience, I have several friends looking for similar products and services, and have directed them towards your company. Thanks again for everything-

James

Dean

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

Mary

Clark

The best product and excellent customer service!

Jeff

Boudreau

Great everything worked perfectly!

Dave

Skibinski

Everything went well. Thank you very much

Tom

Honrath

Great! Thanks!

Goat

Snob

Product was great. Easy installation. Great improvement over stock.

Ron

Pontius

Thanks for the promoptly sending my order. Everything fit great. I'm totally satisfied!! Thanks again!

Darrell

Blackw

Five stars, very responsive!

Nelson

Merced

It is amazing! Truck runs like a dream!

Luis

Morato

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

Just finished my tuner and I love it. I I appreciate the quick shipping and great customer service u provided. Everything fit perfectly and was easy to do. I give ya 5 stars no doubt!

Anthony Jackson

Jackson

Yall did great! Fast service and overall great experience!

Travis

Puryear

Very happy

Charlie

Wade

Small issue with shipping on time but 5 stars

Richard

Parks

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

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

Greg

Borgman

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

Chris

Shires

Great so far seems to be exactly what yall described thank you

Marty

Waggo

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

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

Brock

M

2016-2019 GMC & CHEVY Colorado & Canyon Duramax | EGR DPF DEF DELETE KIT very nice for both kits i bought you guys, my business will be a returning customer for sure. also very fast shipping awesome Nick Therrien, owner Larocque, Valleyfield, J6T 4c8, QC

Nick

Therrien

Awesome products at an amazing price. Everything was so simple to install and program. I would highly recommend your product to everyone

Charlie

Clonch

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

Yes 😊

Darrell

McKittri