---tab Description--- Description 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. Fitment 2011–2016 LML Chevrolet/GMC Sierra 2500HD 3500HD 6.6L Duramax 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. Specifications 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--- 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...