Banks 25959 Boost Tube Upgrade Kit 2011 6.6L GM Duramax LML
SKU: 42316877301

Banks 25959 Boost Tube Upgrade Kit 2011 6.6L GM Duramax LML

Sale price$193.05 Regular price$214.50
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Banks 25959 Boost Tube Upgrade Kit 2011 6.6L GM Duramax LMLSerious horsepower requires some seriously amazing quality in your engine parts. Increasing the airflow to your LML Duramax is that key to efficiency and performance. The factory intercooler tubes were ineffectively designed to optimize airflow, but fortunately Banks has the answer and has included heavy duty couples and clamps to ensure blown boots are a thing of the past, as well. Banks hot and cold side tubes have up to 105 percent greater flow

Serious horsepower requires some seriously amazing quality in your engine parts. Increasing the airflow to your LML Duramax is that key to efficiency and performance. The factory intercooler tubes were ineffectively designed to optimize airflow, but fortunately Banks has the answer and has included heavy duty couples and clamps to ensure blown boots are a thing of the past, as well.

Banks hot and cold side tubes have up to 105 percent greater flow area than stock tubes. Produced from high-quality aluminized steel, our tubes are mandrel bent for constant diameter. This increases performance by allowing quicker turbo spool. Better flowing intercooler tubes improve retention of boost pressure (increases density) between turbo, intercooler, and intake resulting in maximum horsepower. The powder-coat finish stops before the end of the tubes for better grip ensuring the 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. These boost tubes are designed for serious horsepower.

COMPARISONS TO STOCK:
  • Banks Hot Side Diameter: 3.5"
  • Stock Hot Side Diameter: 2.5"
  • Banks Cold Side Diameter: 3.5"
  • Stock Cold Side Diameter: 3.38"
  • Banks hot side has 105% greater flow area than OEM hot side
  • Banks cold side has 14% greater flow area than OEM cold side
FITMENT NOTES: This kit is designed to work with the stock intercooler (or aftermarket intercooler with stock inlet and outlet size and location).

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42316877301

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Gavin
Lowell, US
★★★★★ 1
Avoid this handle if you use it
Color: Black, Size: Driver side
Good Product if you don't use it, terrible product if you do use it. The plastic it's made of is too flimsy and gets worse with heat. Installed this product and it only lasted a month and a half before the metal reinforcement plate ripped off the entire plastic handle assembly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 4, 2025
O
Verified Purchase
Online Customer
Houston, US
★★★★★ 5
Perfect match
Color: Tan, Size: Driver side
Fit our truck perfectly, color matches, and it looks like new again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
W
Verified Purchase
William LiCalzi
Waukegan, US
★★★★★ 4
Fitment is decent
Color: Tan, Size: Passenger side
Overall a nice replacement color matched but the fitment was a little loose even though tightened well, where the end comes toward the top of the pillar it is loose and doesn't fit flush
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Reviewed in the United States on December 1, 2023
D
Verified Purchase
dan w
Battle Creek, US
★★★★★ 5
thank you
Color: Tan, Size: Driver side
installed today fits like a glove
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 22, 2025
E
Verified Purchase
ERNEST SCOTT HENDERSON
Battle Creek, US
★★★★★ 2
Handle broke and had to reorder.
Color: Tan, Size: Driver side
The quality is not strong enough. Will not t recommend to others.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2024

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