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Twisted Steel Headers & Y-Pipe (Street Series)

GM Silverado/Sierra 1500 14-19 V8-5.3L
Part Number: 48-44003-YC
$1,875.38

MSRP: $2,287.05

Details:

Twisted Steel Headers Features:

  • Constructed out of 16-gauge, 1-3/4" mandrel-bent stainless steel tubing for unrestricted flow
  • 4-to-1 mitered merge collectors eliminates flow-block turbulence seen on formed collectors
  • 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 better flow

Test Results:

  • Added an astounding +18horsepower and +26lbs. x ft. of torque as verified by our in house dyno
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Overview


Dual High Flow Catalytic Converters:
Semi-metallic 400 CPSI catalytic converters are used for maximum 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.

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.

aFe headers are engineered and manufactured in our Corona, California manufacturing facility.

Applications

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
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