25 Products
Collection: 2011-2015 LML 6.6L Duramax Applicable Products
Ultimate Buying Guide for 2011-2015 LML 6.6L Duramax Performance Upgrades
Explore top performance parts for your 2011-2015 LML 6.6L Duramax. Upgrade your Duramax with SPELAB today!
1. Introduction to 2011-2015 LML Duramax Engine Upgrades
Understanding the LML 6.6L Duramax Engine
The 2011-2015 LML 6.6L Duramax engine is a standout in the heavy-duty diesel segment. Renowned for its reliability and performance, this engine is a favorite among truck owners. However, there are always opportunities to push its capabilities further. By understanding its core features and potential, you can select the right upgrades to enhance its performance and longevity.
Why Choose SPELAB for Your Duramax Upgrades?
SPELAB offers top-of-the-line performance parts specifically designed for the LML Duramax. Our products are engineered to meet the highest standards, ensuring they deliver the results you need. Choosing SPELAB means you’re opting for quality and expertise, backed by our commitment to exceptional customer support and technical guidance.
Ready to explore the best upgrades for your 2011-2015 LML Duramax? Let's move on to the essential modifications that can transform your engine’s performance.
2. Enhancing Duramax Cooling and Efficiency
Radiators for LML Duramax
Upgrading your radiator is crucial for maintaining the performance of your 2011-2015 LML Duramax, especially under heavy loads or extreme conditions. A high-quality radiator helps to prevent overheating, ensuring your engine runs efficiently even during the most demanding tasks. SPELAB radiators are designed with advanced cooling technology, offering superior heat dissipation and durability compared to stock radiators.
Intercoolers to Maximize Power
An upgraded intercooler plays a vital role in enhancing your engine’s efficiency by cooling the air entering the engine. Cooler air is denser, which improves combustion and results in more power output. SPELAB’s intercoolers are built to optimize airflow and reduce intake air temperatures, making them an ideal choice for those seeking to boost their Duramax engine’s performance.
With your engine's cooling and efficiency optimized, it's time to focus on protective upgrades that ensure your Duramax performs reliably for years to come.
3. Protective Upgrades for Long-Lasting Performance
Differential Covers
Upgrading your differential cover is a smart move for those looking to protect their 2011-2015 LML Duramax's drivetrain. A high-quality differential cover not only shields the differential from external damage but also improves oil cooling, which is essential for maintaining the health of your gears under heavy loads. SPELAB’s differential covers are engineered to offer superior protection and heat dissipation, extending the life of your differential.
Valve Covers for Enhanced Protection
Valve covers play a critical role in safeguarding your engine’s valvetrain. An upgraded valve cover from SPELAB provides better sealing, enhanced durability, and improved heat resistance. Whether you're looking for cast aluminum or billet aluminum options, SPELAB has the right solution to match your needs and enhance your engine bay's aesthetics.
With your Duramax now well-protected, let's complete your upgrade journey by exploring additional enhancements that can further optimize your engine's performance.
5. Additional Upgrades to Complete Your Duramax Setup
Custom Tuning Solutions
After installing performance upgrades, custom tuning is crucial to unlock the full potential of your 2011-2015 LML Duramax engine. Tuning adjusts the engine’s parameters to align with the new modifications, resulting in improved power, efficiency, and drivability. SPELAB offers expert tuning support to help you get the most out of your upgrades, ensuring your Duramax engine performs at its best.
You've now explored all the essential upgrades for your LML Duramax. Take the next step and bring your engine to its peak performance with SPELAB's high-quality products.
Conclusion
SPELAB offers everything you need to maximize your Duramax’s potential. Each product is designed with precision and backed by our commitment to quality, ensuring your truck performs at its best for years to come.
Ready to take your Duramax to the next level? Explore SPELAB’s full range of products and start upgrading today.
FAQs
Q1: What is the average lifespan of an LML Duramax engine?
A1: With proper maintenance, the LML Duramax can last over 300,000 miles, although this can vary based on usage and care.
Q2: Is it legal to delete the DPF on my 2011-2015 LML Duramax?
A2: DPF deletes are illegal in many regions due to emissions regulations. It’s important to check local laws before performing such modifications.
Q3: What fuel economy can I expect from a 2011-2015 LML Duramax?
A3: The LML Duramax typically achieves around 15-20 MPG, depending on driving conditions and load. Upgrades and tuning can sometimes improve fuel efficiency.
Q4: Can I use biodiesel in my LML Duramax?
A4: Yes, the LML Duramax is compatible with up to B20 biodiesel (20% biodiesel, 80% petroleum diesel), but using higher concentrations may require modifications and could void warranties.
Q5: What is the towing capacity of the 2011-2015 LML Duramax?
A5: The towing capacity ranges from 13,000 to 17,000 pounds, depending on the truck configuration. Performance upgrades can enhance towing power.
Q6: How do I improve the cooling on my LML Duramax?
A6: Upgrading the radiator, installing a more efficient intercooler, and ensuring proper airflow can significantly improve cooling, especially under heavy loads.
Filter products
- ENGINE
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POWERSTROKE
- EGR Delete Kit
- CCV PCV Reroute Kit
- DPF Delete Exhaust
- DPF Delete Dual Exhaust
- Muffler
- Tuner
- Up-Pipe
- Downpipe
- Air Intake Kit
- Intercooler
- Intercooler Pipe Kit
- Radiator
- Oil Catch Can
- Differential Cover
- Coolant Tank Can
- Coolant Expansion Tank
- Exhaust Manifold
- Turbo
- Wheel Spacers
- CP4 Bypass Kit
- Fuel Tank Sump Kit
- Fuel Injector Tool Kit
- Blue Spring Upgrade Kit
- Transfer Case Shift Motor
- Oil Cooler Kit
- Fuel Pump Driver Module
- Auto Locking Hub
- External Fuel Pump
-
DURAMAX
- Tuner
- EGR Delete Kit
- DPF Delete Exhaust
- DPF Delete Dual Exhaust
- Muffler
- CCV Reroute/delete kit
- Intercooler
- Intercooler Pipe Kit
- Radiator
- Downpipe
- Up-Pipe
- Intake Elbow Bridge Kit
- Cooler Line Kit
- External Fuel Pump
- Fuel Filter Housing Kit
- Oil Pan
- Fuel Sump Return Kit
- Rail Fuel Valve
- Fuel Filter Multipack
- Fuel Filter Spacer
- Fuel Filter Adapter
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FOR CUMMINS
- EGR Delete Kit
- EGT Relocation Kit
- DPF Delete Exhaust
- CCV Reroute/delete kit
- Tuner
- Intercooler
- Intercooler Pipe Kit
- Radiator
- Valve Cover
- Intake Manifold
- Coolant Bypass Kit
- Coolant Leak Repair Kit
- Fuel Rail Plug
- Race Fuel Rail
- Fuel Tank Sump Kit
- External Fuel Pump
- Muffler
- Oil Catch Can
- Turbo
- Air Intake Kit
- ALL-IN-ONE KITS
- CATEGORIES
- BLOG&VIDEO
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Sale16 reviews5.0 16 reviewsRegular price From $1,368.67Regular price
$1,440.67Sale price From $1,368.67Fitment:
2011 Chevy /GMC Duramax Diesel LML.Silverado and Sierra pickup trucks
2012 Chevy /GMC Duramax Diesel LML.Silverado and Sierra pickup trucks
2013 Chevy /GMC Duramax Diesel LML.Silverado and Sierra pickup trucks
2014 Chevy /GMC Duramax Diesel LML.Silverado and Sierra pickup trucks
2015 Chevy /GMC Duramax Diesel LML.Silverado and Sierra pickup trucks -
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Sale35 reviews4.77 35 reviewsRegular price From $79.77Regular price
$103.70Sale price From $79.77Fitment:
2011,2012,2013,2014,2015,2015.5 2016 GMC Chevy LML 6.6L Duramax Diesel -
Sale15 reviews4.6 15 reviewsRegular price From $79.77Regular price
$103.70Sale price From $79.77Fitment:
2011,2012,2013,2014,2015,2015.5 2016 GMC Chevy LML 6.6L Duramax Diesel -
Sale
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No reviewsNo reviewsRegular price $389.00
Fitment:
2011,2012,2013,2014& 2015 Chevy / GMC Duramax Diesel LML. Silverado and Sierra pickup trucks. -
Sale
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11 reviews4.55 11 reviewsRegular price $84.00
Fitment:
2011-2016 GMC Sierra 2500 HD 6.6 Diesel LML Duramax
2011-2016 GMC Sierra 3500 HD 6.6 Diesel LML Duramax
2011 -2016 Chevrolet Silverado 3500 HD 6.6 Diesel LML Duramax
2011-2016 Chevrolet Silverado 2500 HD 6.6 Diesel LML Duramax -
Let customers speak for us
from 2127 reviews
Love this differential fits amazing and looks even better so glad with my choice wouldn’t have it any other way honestly
I went with the 3" down pipe as well as the lb7 style up pipe for my 06 lbz.
highly recommend the up pipe, much better than the block off plate.
paired with the 3" down pipe is a must, I can tell my truck is building boost quicker and getting the exhaust out faster.

Simple install and works great

This was a super simple install. Took about 45 minutes, which includes removal of old exhaust. Exhaust fit well and seems to be made of high quality. Truck sounds awesome!

Exhaust fit great, great quality, sounds great, used with the muffler and is surprisingly quiet! Will be ordering more in the future!

Buen producto buena calidad

This is very good quality and the shipping was very quick. Definitely trust this site and will do business with SPELAB again.

Customer service support was great, and the product worked as described and the extra heater hose included was a life saver in helping me fix my HVAC heater when the factory connector broke.

I am happy with my purchase. Looks to be a quality part, and definitely can’t beat the price .

Looks pretty%2C install wasn’t bad other than the very last fuel line which isnt spelab’s fault lol%2C i find that the turbo spools faster and power comes in harder. Less black smoke now that she can breath%21%21%21 Overall very pleased%21%21%21

Had it installed on my ‘99 Camaro Z28. Sounds really nice at WOT, and the tone is very deep at idle. Was decently made, electric motor has held up nicely from water over the past few months. Wireless fob has better range than my cars keyfob lol. Assembly was straight forward, but there were more parts included than the instructions had said. Would buy again for another vehicle with a v8.

I love this product. Easy install. All hardware was perfect. It’s a beautiful product and has qualities that I love. Fill and drain plugs and mostly the sight port.

Awesome product and very easy to install also the best part about this kit is that it does work with other added on fuel filter AFTER the cp4 so you get best of both worlds🙏🏽

The 5' exhaust with the 6" tip looks and sounds really good. The egr delete its made really nice and fits perfect and looks good.
The ccv it's easy to install it fits and looks good too. Thanks soo mutch

It works great, the nut that rubbed a while in the up pie was moved from the original place and doesn’t rub anymore