Vehicle Fitment
Make | Model | Year |
---|---|---|
Toyota | 4Runner | 1988-1995 |
Make | Model | Year |
---|---|---|
Toyota | 4Runner | 1988-1995 |
Steel Long Tube 3-1 Exhaust Header Kit with Y-Pipes (THY-505-C) by Doug Thorley Headers®. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 2.5". Header Style: Long Tube. This complete header kit makes noticeable increases in power output of your 3.0L Toyota Truck or 4Runner. The kit includes ceramic coated long tube tri-y headers and a complete performance y-pipe kit routing exhaust gases all the way to your exhaust system. Install these long tube headers today and feel your vehicle's true power potential. Doug's headers are designed to outflow your stock exhaust manifolds by leaps and bounds. Their headers will increase the power of your motor across the widest RPM band possible. That is the beauty of the design, and that is why they are the best street header available.
Header Material: Steel |
Header Style: Long Tube |
Primary Diameter: 1.5" |
Collector Diameter: 2.5" |
Attachment Method: Slip-Fit |
Collector Attachments: Slip-fit |
Header Style: 3:1 Long-Tube Header |
Material: Steel |
Finish: Silver Ceramic Coated |
Weld Up: No |
Primary Tube Diameter: 1-1/2" |
Primary Tube Gauge: 14 Gauge |
Collector Attachment: Slip-fit |
Collector Diameter: 2-1/4" |
Tuned: No |
Flange Thickness: 3/8" |
Bolts and/or Studs Included: Yes |
Gaskets Included: Yes |
Y-Pipe (Crossover) Included: Yes |
Y-Pipe Inlet Diameter: 2-1/4" |
Y-Pipe Outlet Diameter: 2-1/2" |
Catalytic Converter(s) Included: No |
Quantity: Sold as a Complete Kit |
Warranty: Limited Lifetime to original purchaser |
The Tri-Y Header is designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The 4:2:1 Tri-Y header design makes it the ideal choice for trucks, tow-rigs, RV's and most street applications. The collector design makes this header one of Doug's most efficient, which means you'll see improvements both on the dyno and at the pump.
A Doug Thorley Headers original design, the 4:2:1 collector specification on the Tri-Y Header is engineered to match your engine's firing order and thereby maximize exhaust scavenging - the complete expulsion of gasses on the exhaust stroke. The Tri-Y design creates more usable power and torque than any other header design, making it the header of choice for enthusiasts who want the most bang for their buck.
For over 50 years, Doug Thorley Headers has been an innovator in the automotive aftermarket. Driven by a passion for performance and superior quality, they are committed to developing 100% American-made products that will reliably deliver maximum horsepower and torque. Doug Thorley Headers® has been pushing the limits of automotive technology since they first invented the Tri-Y header in 1958, and they do it all on American soil.