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aFe POWER 48-44003 Twisted Steel Headers

GM Silverado/Sierra 1500 14-16 V8-5.3L
Part Number: 48-44003

MSRP: $898.80

In Stock. Will ship within 1-2 business days.


  • 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
  • Potential for up to +18 horsepower and +26 lbs. x ft. of torque when combined with aFe's y-pipe (P/N 48-44004)
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Factory Mounting Locations:
These headers retain your stock catalytic converters and are a direct bolt-on installation which requires no cutting or drilling to provide a hassle-free installation.

Mitered Collectors:
4-to-1 Mitered Merge collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.

Heavy Duty Flanges:
A thick, 1-piece flanges prevent warpage to ensure a leak-free seal over the life of the vehicle.

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

Combine With Y-Pipe:
Pair with aFe's MACH Force-Xp Y-Pipe for even better flow-through for additional performance, horsepower and fuel economy. (P/N: 48-44004)

Also Fits:

2014-2016-Chevy Tahoe V8-5.3L

2014-2016-GMC Yukon V8-5.3L

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

Note: This header 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.

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