Upgrade the factory boost tube on your GM 6.6L Duramax L5P with the Banks Power 26005 Boost Tube Upgrade Kit from Spooled Up Performance. Banks has developed oversized charge air cooler pipes and billet adapters. This results in less boost pressure loss from the turbo to the intake manifold. The improved airflow, which ranges from 26-45%, allows the turbo to spool faster and maintain boost pressure with minimal wasted energy and heat. Banks Boost-Tubes enable the engine, particularly the turbo, to operate with less effort in compressing intake air. This maximizes horsepower delivery, enhances throttle response, and reduces engine stress. Despite the limited space in the L5P engine, Banks engineers managed to maintain a full 3.5" diameter for both the hot and cold side of our boost tubes. In comparison, our boost tubes are significantly larger than the stock intercooler piping. The combination of large smooth mandrel bends and steel construction places the Banks Boost-Tubes in a class of their own in terms of performance and durability. GM made various changes to components in the engine bay for the L5P, including a new coupler system on the cold side. Using CFD simulations, Banks engineers designed billet couplers with a perfect taper and unique double parabolic shape to optimize airflow and reduce restriction. The shape and curvature of these couplers are crucial for maintaining pressure efficiency throughout the intercooler system. In contrast, GM opted for a nearly full rubber hose design on the cold side, which may simplify production but sacrifices some performance. Banks Boost-Tubes, made from mandrel bent steel, offer superior durability and strength compared to OEM Charge Air Pipes. They are resistant to flexing, cracking, and drying out, ensuring unparalleled performance and longevity.
FEATURES:
- Bung For A Temperature Probe
- 5-Ply Heavy-Duty Silicone Couplers
- Improves Airflow By Over 26% And 45%
- Spring-Loaded Constant Tension Clamps
- Allow The Turbocharger To Spool Up Faster
- Mandrel-Bent Aluminized Steel Construction
- Hot Side Flows 490 CFM At 12" Vs Stock 388 CFM
- Billet Venturi Couplers Maintain Boost Pressure
- Cold Side Flows 635 CFM At 12" Vs Stock 435 CFM
- Constant 3.5in Diameter Tubing For The Best Flow
- Huge Increase In Size & Flow Over Stock And Competitors (3.5" Vs 2.5")
Shipping Restrictions Apply 
 This product can not be shipped to these states: CA
 This product can not be shipped to these states: CA
Product Returns
Product Return Policy
- Returns must be packaged securely in an outer carton
- Do not write on the product packaging itself. Write only on the outer shipping carton.
- Packages received without a Return Authorization Number written clearly on the outer carton will be refused.
- Returnable items must be received by SUP within 30 days of the product being received by you the customer. (determined by tracking number)
- Returned product must be in new, re-saleable condition, with all original boxes, packaging, parts, cables, manuals, etc.
- Upon receipt, all returns will be inspected, and, at our discretion, credit may be refused or a restocking fee of 5%-10% may be assessed.
- Original shipping cost and shipping protection charges are non-refundable.
- Customer is responsible for shipping costs incurred to return products.
- Products can only be returned for a refund, store credit, or an exchange for the same item. Product cannot be exchanged for a different part number.
Some Circumstances in which credit will not be issued but not limited to:
- Product has been installed and/or used
- Product has been damaged from an attempt to be installed and/or used
- Product is shipped back without original box, manual and/or parts
- Seal on electrical parts is broken
- Product serial number does not match that of which was original shipped to buyer
- Product is deemed not resell able by SUPÂ due to customers own actions in dealing with the product
Core Returns
Core Return Instructions: STOP! Please read to avoid costly delays!
- Step 1: Verify the core will be received back within 30 days. (See Deadline)
- Step 2: Fill out the Return Form.
- Step 3: Wait for return instructions. SUP will email a return number (RMA) and a return shipping address. Many cores will be sent directly back to the manufacturer, so please read the instructions.
- Step 4: Package the core. Good packaging prevents costly damage and/or the core being refused by the shipping carrier. It may be possible to reuse the box your original product came in. If not, use a box strong enough to support the product. Seal the product in a plastic bag to prevent leaks. Cushion the product with packing material and securely seal the package with tape.
- Step 5: Attach the shipping label you have purchased (see return shipping policy) and write the return number (RMA) large and clear on the outside of the box.
- Step 6: Ship the core.
Core Return Policy *** Important Please Read ***
Deadline: Core returns will only be accepted within 30 days of receiving the original product. After 30 days core credit refunds will be at the discretion of SUP.
Refund Policy: Returns made between 0-30 days are eligible for credit back to the original payment method used for the purchase. Credit may be full, partial, or denied based on the acceptance policy below. Please allow up to 4 weeks after the core is received for inspection and refund if accepted.
Return Shipping Policy: Core return shipping is the responsibility of the customer. SUP recommends using a carrier that provides package tracking and insurance. You will not be reimbursed for shipping costs incurred in shipping the core. SUP is not responsible for cores received damaged, freight penalties, and/or lost shipments.
Acceptance Policy:
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- No leaking fluids, all fluids must be drained, and the core must be sealed in a plastic bag.Â
- The core returned must be a like-for-like make, model, type, and part number.
- Cores will not be accepted from a salvage or junkyard.
- Cores must not be disassembled or have missing and/or damaged major components.Â
- Cores must be in rebuildable condition.
Core refund acceptance is at the discretion of SUP and the manufacturer/remanufacture or the original product. Failure to follow the above policy may result in partial credit and/or no credit being issued. If you would like a core returned that has been denied acceptance, you may request that within 30 days and pay for return shipping. Cores that have not been accepted and are unclaimed by the customer after 30 day will be destroyed and disposed of.
Updated 08/22/2024
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