"Easy install , fuel mileage went up +5 per gallon"
Cummins
Shop All
Expert Pick
SKU #: SB-75-5136
MPN #: 75-5136
S&B 75-5136 Cold Air Intake 20-26 GM 6.6L Duramax L5P
Description
Overview
Are you ready to up your airflow in your L5P for improved performance and fuel economy with the highest quality cold air intake on the market? If so, you found it!
S&B builds cold air intakes, and that's all that they make, so they're pretty darned good at it. With S&B, you'll find that they only use the highest quality materials coupled with the best machinery built in the USA and do it all at a price point that's pretty tough to beat.
MAXIMUM PERFORMANCE: The cold air intake for the 2020-2026 Silverado / Sierra Duramax L5P 6.6L was engineered to minimize air restriction and flow better than stock. This kit comes with a fully enclosed airbox that protects the filter from dirt and keeps out engine heat.
NEW SNAP IN LID DESIGN: The new snap-In lid design requires no screws to secure it to the box. This makes installation and inspection quick and easy. Our silicone edge trim ensures an airtight seal, protecting against unwanted, power-robbing engine heat.
PREMIUM SILICONE COMPONENTS: The air filter, coupler, lid seal and box plug are all made with silicone. Silicone is a premium rubber that will seal better and last longer. It handles temperatures as high as 400F without cracking or tearing and won't deteriorate over time.
CHOOSE YOUR AIRFLOW: More air equals better performance. The Duramax L5P 6.6L intake features three air inlet points. If you want to customize the amount of air you take in, we provide an optional box plug that can seal off one inlet point. When to use the Box Plug? Stock intake boxes are a significant contributor to poor airflow which is why S&B designs custom air boxes with secondary and/or enlarged openings. With that said, S&B recognizes the benefits of cooler air, so we have included a plug to seal off the opening if desired. For optimal performance, we recommend that the intake be used without the box plug, except in conditions of an extreme heatwave.
NO CHECK ENGINE LIGHTS: S&B devotes a huge amount of resources to engineer our intakes that allow your engine to run properly with stock calibration or enhanced tuning. This kit was designed to avoid check engine lights with it's properly mapped Mass Air Flow Sensor.
SILICONE HOOD SCOOP SEAL: The L5P intake kit features a silicone air scoop seal that integrates with the OEM hood scoop and feeds air to the filter. More airflow equals better performance.
Choose add-ons
Enter your zip and we'll see if installation is available.
- Request quotes from local installers at checkout
- Compare options and choose the best fit for your install
About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
S&B's cold air intake for the L5P is engineered to minimize air restriction and flow better than stock for improved performance and fuel economy.
- Fits
- 2020-2026 GM 6.6L Duramax L5P
- Brand
- S&B
- Best for
- Improved airflow, performance and fuel economy
- Key features
- Fully enclosed airbox protects filter from dirt and engine heat
- Snap-in lid design requires no screws for quick installation and inspection
- Silicone edge trim ensures an airtight seal against engine heat
- Premium silicone filter, coupler, lid seal and box plug resist cracking and tearing up to 400F
- Three air inlet points with optional box plug to customize airflow
- Designed to avoid check engine lights with a properly mapped Mass Air Flow Sensor
- Silicone hood scoop seal integrates with OEM hood scoop to feed air to the filter
- Key specs
- Handles temperatures up to 400F
- Three air inlet points
- Important
- If the plastic seal is broken on the filter, this product is ineligible for return.
IMPORTANT NOTE:
- If the plastic seal is broken on the filter, this product is ineligible for return
About S&B
Browse S&B Cold Air Intakes Online by Make, Model, and Year.
S&B Filters specializes in the manufacturing of high quality cold air intakes, air filters, intake manifolds, as well as other performance parts for light duty diesels to include Dodge Rams with a Cummins diesel engine, Powerstroke equipped Ford, and Chevrolet and GMC's with the hard working Duramax engine, as well as gas trucks and SUVs. With their combination of quality, performance, and affordability, they are one of our top picks when someone wants a recommendation for an air intake system.
Due in large part to the extensive amount of research and development S&B performs on every single part they produce, they are able to maximize airflow to deliver the biggest gains and have the simplest installation that nearly anyone can perform with basic hand tools. To reaffirm their commitment to build a quality product, S&B backs their air filters and intake kits with a one million mile warranty, as well as tests to meet or exceed ISO 5011 standards. S&B keeps their quality high and their pricing low by making almost everything themselves.
Browse S&B Fuel Tanks by Make, Model, and Year.Many of today's modern diesels are equipped with puny fuel cells that require auxiliary, bed mounted systems to become almost mandatory for any of us traveling long distance, or simply don't want to fill up every other day. While there are options that exist on the market for replacement cells, none have gone to the extent that S&B Tanks has with features that the entire diesel market has been asking for. Similar to stock ground clearance? Check! Integrated fuel sump? Check? Easy installation? Absolutely! When you're ready to upgrade your truck's Distance to Empty, look no further than S&B Tanks.
Browse S&B Suspension by Make, Model, and Year.For us Diesel Heads, our truck is more than just a way to get from point A to point B. They are part of our profession and lifestyle. When that's the case, you want to make sure that every mile you drive and every minute you spend in it is exactly what your looking for. Look no further than S&B Suspension's premium lift kits that combine strength, drivability, and performance into one package. You may know S&B for their filters and tanks but the same quality and look you are used to exist for their suspension systems as well.
Video
Diesel Talk | S&B Cold Air Intakes
Are you ready to up your airflow for improved performance and fuel economy with the highest quality cold air intake on the market for your diesel engine? If so, you found it! Check out our product overview of S&B Filters.
Video
Boost It: S&B Cold Air Intakes
Get the most out of your engine with S&B Cold Air Intakes! Designed to maximize airflow, these high-quality intakes increase horsepower, improve throttle response, and boost overall performance. With premium materials and innovative filter technology, S&B Cold Air Intakes help keep your engine clean while enhancing efficiency. Perfect for those who want to unleash their vehicles potential, whether on the street, trail, or track!
Video
Diesel Talk | S&B Dry vs. Oiled Filters
Confused about whether to choose a dry or oiled air filter for your truck? In this video, Diesel Power Products teams up with S&B to break down the key differences between dry and oiled filters. We’ll cover performance, maintenance, filtration efficiency, and which option is best for your driving needs. Whether you’re looking for ease of cleaning or maximum airflow, we’ve got you covered.
Blog
September 01, 2026
If you're researching L5P Duramax problems before buying or maintaining a Silverado HD or Sierra HD, here's...
Read MoreL5P Duramax Problems: Reliability & Common Issues
March 24, 2025
Ladies and gentlemen, the impossible has happened. Experts said it could never be done on a commercial...
Read MoreCracking The Uncrackable L5P Duramax
September 11, 2026
In this guide, we’re going to go a little deeper into what exactly DEF is, and then...
Read MoreWhat Is DEF Fluid? Diesel Truck DEF Explained
September 08, 2026
Picking the best tires for diesel trucks isn't the same decision as for a half-ton gas truck....
Read MoreBest Tires for Diesel Trucks: Top Picks & Tips
Overall rating: 4.68 / 5 from 25 reviews.
AI Generated Review Summary
Summary topics
Review topics: [fit, looks, difference, install, shipping, addition, box, flow, intake].
Review highlights
Reviews
S&B Best Option for flow!
"I’ve been really impressed with the S&B intake systems. I originally bought two for my other two trucks and liked it so much that I ended up purchasing more. This one was actually a gift for my uncle’s 2021 6. 6 Duramax. The quality is excellent and what I like the most is the improved airflow and how much better you can hear the turbo spool compared to the restrictive factory setup. The truck feels like it breathes easier and throttle response feels smoother. After running one on my own trucks and seeing how well it performs, it was an easy decision to buy another for my uncle. If you’re looking for a solid intake upgrade for the 6. 6 Duramax, S&B makes a great product."
Cel
"Check engine light came on after 2 weeks for Nox sensor"
Very effective
"Installation was easy and the results seem to be very good. Have not driven it much but anticipate some good results."
I love this air box,
"I love this air box, you can feel it pulling air for sure compared to a stock filter housing."
Huge flow
"What a great simple and cheap addition that was quick and easy to install. Best was the support received when ordering the right product. Had some questions, so when I called in and was recommended this, it was the best choice. Quick shipment and box arrived with no damage. Definite recommendation for your truck."
Easy install, no codes afterwards
"Easy install, no codes afterwards and works great!"
Easy to install and can
"Easy to install and can feel the difference."
Muy fácil de instalar, se
"Muy fácil de instalar, se ve súper brutal y la guagua no se ahoga más"
2020 2500hd 6. 6 diesel S&B Intake
"Had it on a week already & love it great fuel mileage 2-3 mpg better increased HP & Torque , I would recommend this intake ."
Q&A
- Does this fit the 2025 l5p?
- This intake as of 2/5/2025 only fits the 20-23 L5P Duramax.
- Is the intake still a 4" same as stock? Asking because of the KC Turbo I'm installing, I need to know
- It only goes as far as the PCV baffle. It does not go all the way to the turbo. But it is the same size as factory at that location. -Sands
- Any word if this will fit the 2020’s or a time frame when the 2020’s will be coming to the market?!
- No word on the 2020's yet. -Ben
- Will it void factory warranty?
- No, it should not. However, I would double check with your warranty provider. -Ben
- when driving on the highway is there a noticeable increase in noise after installing this kit? I am going to be driving my truck long distances and although i love the sound of my 7.3, I'm not sure I could stand it to be much louder on the highway.
- Not just cruising on the highway no. But under acceleration you would notice a difference. DppSands