Tri-Y Design: Paired opposite firing cylinders with equal, specifically tuned primary lengths maximizes scavenging and increases torque throughout the power band. 304 Stainless Steel Laser Cut Header Flanges: High quality laser cut 304 stainless steel header flanges provides superior sealing at the head surface. 304 Stainless Steel Tubing: High grade stainless tubing with a uniform brushed finish provides a beautiful look and high resistance to corrosion.

Tig-Welded: 100 percent Tig-Welded by certified craftsmen for race proven strength and durability. Tig-Welding provides the strongest welds reducing stress cracks. Factory Mounting Locations: 2.5 InchInlet/Outlet Connection Pipe mount directly to OE mounting locations.

Mandrel Bent Tubing: This system is constructed of mandrel bent, stainless steel brushed tubing for maximum performance, corrosion resistance and strength eliminating cracking. Emissions Disclaimer: This product does not require a Carb Eo# (Vehicle does not exist in U.S.). aFe Twisted Steel Headers are engineered and manufactured in our Corona, California manufacturing facility.

Features and Benefits:

• Fits 4-Door with Automatic & Manual Transmissions
• 1-3/4 Inch Primary Tubing, 2-1/8 Inch Secondary Tubes, & 2-1/2 Inch Collector
• 6-2-1 Tri-Y Design
• 3/8 Inch Thick 304 Stainless Steel Head Flanges
• Optimized Tube Lengths for Improved Flow
• Retains Factory O2 Sensor Locations
• 2-1/2 Inch Inlet/Outlet Connection Pipe Mounts Directly to OE Mounting Locations

Details:

• Application: Race Car
• Emission Code: 4
• Engine Make/Size: Ford 4.6L
• Horsepower Increase: 24
• Material: Steel
• Port Shape: Round
• Series: Twisted Steel
• Torque Increase: 27 ft-lbs
• Tube Diameter: 1.75 Inch
• Tube Direction: Down Swept
• Warranty: 2 Year

Applications:

• Nissan Patrol (Y61) 01-16 L6-4.8L