Upgrade All-Aluminum Tube-Fin Intercooler for 2011–2016 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax | SPELAB
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Select your truck to continue
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from SPELAB
---tab Description---
LML Duramax Tube-Fin Intercooler Overview
Upgrade the weak link in your LML's charge air system. The SPELAB All-Aluminum Intercooler is a heavy-duty reliability solution specifically engineered for the 2011-2016 Chevrolet/GMC 2500HD/3500HD.
The LML Duramax is a towing powerhouse, but the factory intercooler utilizes crimped plastic end tanks that are prone to cracking under heavy loads or high boost. SPELAB replaces this failure point with 100% aluminum end tanks , ensuring your truck stays on the road and out of the shop.
Featuring a robust 64mm thick Tube-Fin core and weighing in at over 36 lbs, this unit provides a significant increase in cooling capacity over stock. Unlike overly dense competition cores that can restrict airflow to the radiator, our engineered Tube-Fin design maintains the "Flow-Through" capability essential for the LML's cooling stack, keeping your engine coolant temps safe while delivering denser, cooler intake air.
All-Aluminum Intercooler Fitment
• 2011 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2012 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2013 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2014 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2015 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2016 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
Tube-Fin Intercooler Key Features
• Perfect Balance for Towing (Radiator Safe):
LML trucks are often used for heavy towing. While you need cooler intake air, you cannot afford to block airflow to your radiator. Our 64mm Tube-Fin core increases cooling volume significantly but uses a fin design that allows ample ambient air to pass through to the main cooling system. It prevents the engine overheating issues often caused by "wall-like" bar-and-plate cores.
• Eliminate Plastic Failures:
The stock LML intercooler is a temporary part living on borrowed time. Plastic end tanks crimped to the core will eventually leak. Our unit is solid aluminum, welded , and pressure-tested. It is a permanent fix for boost leaks.
• Heavy-Duty Thermal Mass:
Weighing 36.3 lbs, this is not a flimsy replacement. The substantial aluminum mass helps absorb heat spikes during hill climbs, while the Tube-Fin structure sheds that heat rapidly on the descent, ensuring your EGTs stay consistent.
• Direct Fit, No Modifications:
Engineered to fit the 2011-2016 front end perfectly. It works with factory piping or aftermarket charge pipes, making installation straightforward for any DIY mechanic.
Product Specifications
64mm Core and 36.3 lb Aluminum Build
Core Thickness (Tube-Fin)
64 mm
Material
Full aluminum alloy
Weight
16.45 kg (36.3 lbs)
Package Dimensions
122.6 × 17.8 × 75.5 cm (48.3" × 7.0" × 29.7")
Installation
Direct Bolt-On
---tab FAQ---
LML Duramax Tube-Fin Intercooler FAQs
Q: Will this 64mm core block airflow to my radiator?
A: No. We specifically utilize a Tube-Fin design for this 64mm core to ensure high air permeability. This allows the radiator behind it to function efficiently, even when towing heavy loads in summer heat.
Q: Is this a performance upgrade or just a replacement?
A: It is both. It replaces the weak plastic tanks for reliability, and the thicker 64mm core offers better cooling performance than the thinner stock unit.
Q: Should I choose this or the Bar-and-Plate version?
A: For 90% of LML owners (Daily driving, Towing RVs/Boats, Street Tunes), this Tube-Fin model is the better choice because it protects your engine water temps. Choose Bar-and-Plate only for dedicated competition/racing trucks where heat soak capacity is the sole priority.
Q: Do you sell Duramax intercoolers for other model years?
A: Yes! If you own an earlier 2006-2010 Duramax, we have the LMM Duramax tube-fin intercooler . And if you'd like a bar-and-plate core for your 2011-2016 LML, we also carry the LML Duramax bar-and-plate intercooler .
---tab Shipping & Returns---
Fast Shipping Policy
Your order will be dispatched within 1-2 business days , and the package will arrive within your order's estimated date. Click for Shipping Policy
Easy Return Policy
Every order comes with a 14-day free return , which means you don't have to pay for a return slip. Click for Return Policy
---tab Description---
LML Duramax Tube-Fin Intercooler Overview
Upgrade the weak link in your LML's charge air system. The SPELAB All-Aluminum Intercooler is a heavy-duty reliability solution specifically engineered for the 2011-2016 Chevrolet/GMC 2500HD/3500HD.
The LML Duramax is a towing powerhouse, but the factory intercooler utilizes crimped plastic end tanks that are prone to cracking under heavy loads or high boost. SPELAB replaces this failure point with 100% aluminum end tanks , ensuring your truck stays on the road and out of the shop.
Featuring a robust 64mm thick Tube-Fin core and weighing in at over 36 lbs, this unit provides a significant increase in cooling capacity over stock. Unlike overly dense competition cores that can restrict airflow to the radiator, our engineered Tube-Fin design maintains the "Flow-Through" capability essential for the LML's cooling stack, keeping your engine coolant temps safe while delivering denser, cooler intake air.
All-Aluminum Intercooler Fitment
• 2011 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2012 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2013 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2014 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2015 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
• 2016 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax
Tube-Fin Intercooler Key Features
• Perfect Balance for Towing (Radiator Safe):
LML trucks are often used for heavy towing. While you need cooler intake air, you cannot afford to block airflow to your radiator. Our 64mm Tube-Fin core increases cooling volume significantly but uses a fin design that allows ample ambient air to pass through to the main cooling system. It prevents the engine overheating issues often caused by "wall-like" bar-and-plate cores.
• Eliminate Plastic Failures:
The stock LML intercooler is a temporary part living on borrowed time. Plastic end tanks crimped to the core will eventually leak. Our unit is solid aluminum, welded , and pressure-tested. It is a permanent fix for boost leaks.
• Heavy-Duty Thermal Mass:
Weighing 36.3 lbs, this is not a flimsy replacement. The substantial aluminum mass helps absorb heat spikes during hill climbs, while the Tube-Fin structure sheds that heat rapidly on the descent, ensuring your EGTs stay consistent.
• Direct Fit, No Modifications:
Engineered to fit the 2011-2016 front end perfectly. It works with factory piping or aftermarket charge pipes, making installation straightforward for any DIY mechanic.
Product Specifications
64mm Core and 36.3 lb Aluminum Build
Core Thickness (Tube-Fin)
64 mm
Material
Full aluminum alloy
Weight
16.45 kg (36.3 lbs)
Package Dimensions
122.6 × 17.8 × 75.5 cm (48.3" × 7.0" × 29.7")
Installation
Direct Bolt-On
---tab FAQ---
LML Duramax Tube-Fin Intercooler FAQs
Q: Will this 64mm core block airflow to my radiator?
A: No. We specifically utilize a Tube-Fin design for this 64mm core to ensure high air permeability. This allows the radiator behind it to function efficiently, even when towing heavy loads in summer heat.
Q: Is this a performance upgrade or just a replacement?
A: It is both. It replaces the weak plastic tanks for reliability, and the thicker 64mm core offers better cooling performance than the thinner stock unit.
Q: Should I choose this or the Bar-and-Plate version?
A: For 90% of LML owners (Daily driving, Towing RVs/Boats, Street Tunes), this Tube-Fin model is the better choice because it protects your engine water temps. Choose Bar-and-Plate only for dedicated competition/racing trucks where heat soak capacity is the sole priority.
Q: Do you sell Duramax intercoolers for other model years?
A: Yes! If you own an earlier 2006-2010 Duramax, we have the LMM Duramax tube-fin intercooler . And if you'd like a bar-and-plate core for your 2011-2016 LML, we also carry the LML Duramax bar-and-plate intercooler .
---tab Shipping & Returns---
Fast Shipping Policy
Your order will be dispatched within 1-2 business days , and the package will arrive within your order's estimated date. Click for Shipping Policy
Easy Return Policy
Every order comes with a 14-day free return , which means you don't have to pay for a return slip. Click for Return Policy
SPELAB Auto Parts: 1 year from delivery; supplier conditions apply. SPELAB offers a one-year limited warranty from delivery for material/workmanship defects under normal use, original purchaser only, with proof of purchase. Consumables, wear/cosmetic damage, improper installation, alteration, misuse and removal/installation labor are excluded. Approved remedies are repair, replacement or replacement parts at SPELAB’s discretion.
Return and warranty information is based on what SPELAB Auto Parts offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
SPELAB Auto Parts warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what SPELAB Auto Parts offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
- Return eligibility
- SPELAB allows return requests within 30 days of delivery, with authorization and undamaged goods, original packaging and accessories. Tuners are final sale. Customer pays voluntary return shipping; original shipping is not refunded. SPELAB pays return shipping for approved damaged, incorrect or manufacturing-defective items. Transit damage must be reported within two business days and incorrect items within seven days. Based on what SPELAB Auto Parts offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- SPELAB Auto Parts
- Warranty duration
- 1 year from delivery; supplier conditions apply
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–10 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- SPELAB Auto Parts
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.