Doug Thorley Headers Tri-Y Header

Description

They are then silver ceramic coated inside and out, which looks great, drastically reduces under-hood temperatures, and creates a strong barrier to protect the headers from the environment. The headers are manufactured using heavy duty 14GA steel tubing, and super flat 3/8 inch head flanges. Doug Thorley Headers THY-542Y-O-C long tube tri-y headers deliver performance and gas mileage for your 1981-1987 Toyota Pickup Truck, 4-Runner. APPLICATION SPECIFICS: 1981-1987 Toyota Pickup Truck, 4-Runner, 20/22R-RE motor, o2 sensor in manifold, no air injection, manual transmission only, 2/4WD. That better exhaust flow produces noticable gains in horsepower and torque output, while increasing fuel efficiency. Doug Thorley Headers is the originator of the tri-y header design, which is the efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. The headers are manufactured using heavy duty 14GA steel tubing, and super flat 3/8 inch head flanges. They are then silver ceramic coated inside and out, which looks great, drastically reduces under-hood temperatures, and creates a strong barrier to protect the headers from the environment.

Key Features

• They are then silver ceramic coated inside and out, which looks great, drastically reduces under-hood temperatures, and creates a strong barrier to protect the headers from the environment.
• Doug Thorley Headers THY-542Y-O-C long tube tri-y headers deliver performance and gas mileage for your 1981-1987 Toyota Pickup Truck, 4-Runner.
• APPLICATION SPECIFICS: 1981-1987 Toyota Pickup Truck, 4-Runner, 20/22R-RE motor, o2 sensor in manifold, no air injection, manual transmission only, 2/4WD.
• That better exhaust flow produces noticable gains in horsepower and torque output, while increasing fuel efficiency.
• Doug Thorley Headers is the originator of the tri-y header design, which is the efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most.
• The headers are manufactured using heavy duty 14GA steel tubing, and super flat 3/8 inch head flanges.