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aFe POWER 48-44006-YC Twisted Steel Long Tube Header & Y-Pipe; Street Series

GM Silverado/Sierra 1500 09-13 V8-4.8L/5.3L
Part Number: 48-44006-YC

MSRP: $1,914.00

Out of stock. More available 10/28/2016


  • Constructed out of 16-gauge, 1-3/4" mandrel-bent stainless steel tubing for unrestricted flow
  • Incorporates 3/8” thick, laser-cut, head flanges designed to match the head port for a leak-free seal
  • 4-to-1 formed merge collectors eliminate flow blocking turbulence
  • Optimized tube lengths improve flow and performance
  • 100% hand MIG-welded construction ensures optimal strength and durability

Y-Pipe Features:

  • Constructed out of mandrel-bent stainless steel tubing
  • True 2-to-1 mitered merge collector eliminates dead zone for improved flow
  • Mandrel-bent 3" into 3-1/2" stainless steel tubing for better flow and added power
  • Incorporates high-Flow, 48 state-legal 400 cell catalytic converters for improved flow

Test Results:

  • Added an astounding +32horsepower and +39lbs. x ft. of torque as verified by our in house dyno
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Long Tube Headers:
Formed Collectors:
4-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.

Optimized Tube Lengths:
Tube lengths are optimized for true pulse control technology which improves flow and performance.

3/8" Laser-Cut Flanges:
These headers come with 3/8" thick laser-cut head flanges and gaskets that are designed to match the head port for a leak-free seal.

Dual High Flow Catalytic Converters:
This system utilizes 400 CPSI (cell per square inch) 48-state legal catalytic converters are used for maximum flow.

Constructed of mandrel-bent dual 3" stainless steel piping which transitions into single 3-1/2" piping to reduce back pressure and improve flow.

True Merge Collectors:
Eliminates dead space that can cause turbulence and hinder flow.

Leak-Free Seal:
High quality OE style flanges and band clamps are used for a complete 360 degree sealing surface.

Hassle-Free Installation:
The performance header and y-pipe are designed to fit in the stock location incorporating the OE hangers, flanges and O2 sensor locations.

Note: This system is not currently CARB exempt and is not available for sale in California or for use on any vehicle registered with the California Department of Motor Vehicle.

All aFe exhaust systems are engineered and manufactured in our Corona, California manufacturing facility.

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MSRP: $1,914.00

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