Due to the current COVID-19 pandemic, we are experiencing delays on shipping some products. ×

Twisted Steel Header & Y-Pipe 409 Stainless Steel w/ Cat

Toyota Tacoma 05-11 V6-4.0L (2WD/4WD)
Part Number: 48-46001-YC

MSRP: $2,140.69



  • Constructed from 1-5/8 IN 16-Gauge Stainless Steel
  • Optimized Tube Lengths are Mandrel-Bent for Maximum Flow
  • Features a 3-to-1 Mitered Merge and 3/8 IN CNC Laser-Cut Flanges
  • Includes Dual High Flow 200 CPSI Catalytic Converters for Better Flow
  • Dyno-Proven Gains up to +9 HP and +12 Lbs. x Ft. TQ


  • Constructed from 2-1/2 IN to 3 IN Mandrel-Bent Stainless Steel Tubing
  • True 2-to-1 Mitered Merge Collector Eliminates Dead Zones for Improved Flow
Read More

Header Features
High Flow Catalytic Converters:
Each header comes with 200 CPSI (cell per square inch) metallic high-flow catalytic converters for maximum flow.

Mitered Merge:
A 3-to-1 mitered merge collector decreases 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.

CNC Laser Cut Flanges:
Flanges are CNC laser cut not only to be visually appealing but for a durable, precise fit and leak-free seal.

Y-Pipe Features
Massive Y-Pipe:
The massive y-pipe is designed using a mitered merge that utilizes a 2-1/2 IN to 3 IN transition for optimum flow while removing turbulences.

True Mitered Merge:
This system utilizes a 2-to-1 mitered merge collector to eliminate dead space that can cause turbulence and hinder flow.

Retain Factory Sensor Mounting Locations:
Retains factory sensor locations for a hassle free installation. These headers also include 400 CPSI catalytic converters that are a direct bolt-on installation which requires no cutting or drilling

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


Vehicle Applications

Year Make Model SubModel Engine Fuel
2005-2011Toyota Tacoma V6 4.0L Gas
Reviews (0)

Be the first to review this product


MSRP: $2,140.69

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