aFe BladeRunner 3in Aluminum Cold-Side Intercooler Tube - Chevrolet Silverado / GMC Sierra 2500/3500 2017-2019 6.6L Duramax - Black

aFe SKU: AFE46-20339-B
Price
Regular price $316.37
Regular price $338.00 Sale price $316.37
6% OFF
On Backorder – Order Now or Contact Us for Availability
Shipping calculated at checkout.

aFe BladeRunner cold-side intercooler tube for the 2017-2019 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD 6.6L L5P Duramax diesel. Built from 3-1/2in mandrel-bent, powder-coated aluminum, it outflows the plastic factory tube while decreasing turbulence and pressure loss to raise horsepower and torque and lower EGTs. It uses factory mounting locations and a 6061-T6 billet aluminum quick-connect adapter with an o-ring seal, plus one 1/8in NPT port for a pressure sensor or water/methanol injection and retention of the factory air-temp sensor. Includes stainless-steel spring-loaded T-bolt clamps and 5-ply silicone couplings pressure tested to 200 psi. Finished in wrinkle black powder coat.

Specifications

Type Cold-side intercooler tube (BladeRunner)
Material TIG-welded mandrel-bent aluminum
Diameter 3-1/2 in
Finish Wrinkle black powder coat
Couplings 5-ply silicone with stainless-steel spring-loaded T-bolt clamps (200 psi); 6061-T6 billet quick-connect adapter
Port 1/8in NPT for sensor or water/methanol injection
Part Number 46-20339-B

Documents: Installation Instructions (PDF)

This part fits:

Year Make Model Submodel
2017-2019 Chevrolet Silverado 2500 HD High Country
2017-2019 Chevrolet Silverado 2500 HD LT
2017-2019 Chevrolet Silverado 2500 HD LTZ
2017-2019 Chevrolet Silverado 2500 HD WT
2017-2019 Chevrolet Silverado 3500 HD High Country
2017-2019 Chevrolet Silverado 3500 HD LT
2017-2019 Chevrolet Silverado 3500 HD LTZ
2017-2019 Chevrolet Silverado 3500 HD WT
2017-2019 GMC Sierra 2500 HD Base
2017-2019 GMC Sierra 2500 HD Denali
2017-2019 GMC Sierra 2500 HD SLE
2017-2019 GMC Sierra 2500 HD SLT
2017-2019 GMC Sierra 3500 HD Base
2017-2019 GMC Sierra 3500 HD Denali
2017-2019 GMC Sierra 3500 HD SLE
2017-2019 GMC Sierra 3500 HD SLT

Shipping

  • In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Backordered items ship as soon as stock lands — contact us for lead times.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30-day returns on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
  • Installed or used parts can’t be returned — confirm fitment before you install.
  • Special orders and custom items are final sale.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy

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