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Banks 25936 3" Boost Tube Upgrade Kit for 2004.5-2009 Chevy/GMC 6.6L Duramax

Banks 25936 3" Boost Tube Upgrade Kit for 2004.5-2009 Chevy/GMC 6.6L Duramax

25936

In stock

$189.00 USD
$210.00 USD $189.00 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Banks Power 04.5-09 Chevy 6.6L Boost Tube Upgrade Kit is a high-performance intercooler upgrade designed to enhance airflow and turbo efficiency. Constructed from mandrel-bent aluminized steel, this 3-inch constant diameter boost tube features larger radius bends to reduce flow restrictions. Its larger size and improved flow area—60% greater than the stock tube—allow for increased air volume, which supports more fuel delivery and results in higher horsepower. The kit's design ensures quicker turbo spool-up and better boost retention, ultimately maximizing engine performance. The red powder-coat finish provides durability and a secure grip, while heavy-duty silicone couplers and tension clamps prevent leaks under high-boost conditions.

This upgrade is compatible with 2004.5–2009 Chevy 6.6L Duramax engines and is intended for use with stock or aftermarket intercoolers that share the same inlet and outlet sizes and locations. It is a direct bolt-on replacement that works seamlessly with the stock elbow and intercooler, making it suitable for street, towing, or performance applications. The kit includes the mandrel-bent aluminized steel tube, silicone couplers, and clamps, ensuring a perfect fit and reliable operation. Designed to improve airflow, lower EGTs, and increase cooling capacity, this boost tube upgrade is ideal for drivers seeking maximum horsepower and efficiency from their Duramax diesel.

Overview

Banks huge 3-inch boost tube. Stock tube is smaller diameter with tighter bends which hurts flow. Banks boost tube is 3-inch constant diameter mandrel-bent Aluminized Steel with larger radius bends. More air allows for more fuel which means more horsepower. Banks boost tube is larger than the factory pipe and designed to work with the stock elbow and intercooler to improve airflow, and allow the turbocharger to spool up faster. Banks cold side tube has 60% greater flow area than stock tube. Produced from high-quality aluminized steel, the tube is mandrel-bent and constant diameter. This allows for quicker turbo spool. Better flowing intercooler tube improves retention of boost pressure (increases density) between turbo, intercooler, and intake resulting in maximum horsepower. Our red powder-coat finish stops before the end of the tube for better grip ensuring our 4- and 5-ply heavy-duty high-temperature silicone couplers hold tight under high-boost conditions. Spring-loaded constant tension clamps maintain a stronger grip to prevent leaks or blown boots. Key Features: Works with stock intercooler or aftermarket intercooler with stock inlet and outlet size and location. 60% increase in size and flow over stock (3.0 in vs 2.375 in). Allow the turbo charger to spool up faster. Mandrel-bent aluminized steel construction. Constant diameter tubing for the best flow. 4- and 5-ply heavy-duty silicone couplers. Spring-loaded constant tension clamp. Greater cooling capacity. Perfect fit and finish. Improves airflow. Driver side tube. Lower EGTs

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