Free Shipping on Orders Over $100 (U.S. - 48 States) - Call Our Team 951-493-7185 ×

Twisted Steel Long Tube Header & Y-Pipe (Street Series)

GM Silverado/Sierra 1500 14-19 V8-5.3L
Part Number: 48-44005-YC

MSRP: $2,940.00


Twisted Steel Long Tube Headers Features:
  • Constructed out of 16-gauge, 1-3/4" mandrel-bent stainless steel tubing for unrestricted flow
  • 4-to-1 formed merge collectors eliminates flow-block 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" stainless steel tubing for better flow and added power
  • Incorporates high-Flow, 400 cell catalytic converters for improved flow
  • Test Results:

    • Added an astounding +12 horsepower and +13 lbs. x ft. of torque as verified by our in house dyno
    Read More

    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.

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

    Constructed of mandrel-bent 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 that formed collectors are prone to produce.

    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 hanger, flange and O2 sensor locations.

    Note 1: This system Fits 2 & 4 wheel drive models

    Race Disclaimer:
    This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. To complete the purchase of this item, aFe Power competition acknowledgement/liability release form must be filled out and submitted.

    All aFe POWER headers and Y-Pipes are engineered and manufactured in our Corona, California facility.


    Vehicle Applications

    Year Make Model SubModel Engine Fuel
    2014-2018Chevrolet Silverado 1500 V8 5.3L Gas
    2019-2019Chevrolet Silverado LD 1500 V8 5.3L Gas
    2014-2018GMC Sierra 1500 V8 5.3L Gas
    2019-2019GMC Sierra Limited 1500 V8 5.3L Gas
    Reviews (0)

    Be the first to review this product


    MSRP: $2,940.00

    Add to Cart

    Please wait...

    Item has been added to your shopping cart

    Keep Shopping

    View Shopping Cart

    Item has been removed from your shopping cart

    Keep Shopping

    View Shopping Cart