aFe Power 46-39103 76mm Throttle Body for 03-15 Toyota 4Runner/FJ/Tacoma/Tun

Vehicle Fitment

• 2003-2009 Toyota 4Runner (V6 4.0L 1GR-FE)
• 2007-2009 Toyota FJ Cruiser (V6 4.0L 1GR-FE)
• 2005-2015 Toyota Tacoma (V6 4.0L 1GR-FE)
• 2005-2011 Toyota Tundra (V6 4.0L 1GR-FE)

Features

• Larger 76 mm throttle body increases airflow over stock 65 mm unit
• 6061-T6 billet aluminum construction for strength and light weight
• Precision-machined adapter ensures accurate fit and finish
• Serrated/swirl design promotes intake turbulence for better atomization
• Improved throttle response and increased horsepower/torque potential
• Plug-and-play electronics with no tuning required
• Includes gasket and all necessary installation hardware
• Direct bolt-on installation using OEM mounting locations

Specifications

• Brand: aFe Power
• Part Number: 46-39103
• Throttle Body Bore: 76 mm diameter
• Material: Billet aluminum adapter with high-flow throttle body
• Actuation: Drive-By-Wire compatible
• Fitment: Toyota 4Runner/FJ Cruiser/Tacoma/Tundra with 4.0L 1GR-FE V6
• CARB Status: Not CARB legal for emissions-controlled states

Included Components

• 1x 76 mm throttle body assembly (46-39103)
• 1x billet adapter plate (65 mm to 76 mm)
• 1x throttle body gasket
• 4x M6 mounting screws

Product Description

The aFe Power 46-39103 76 mm Throttle Body is a high-performance upgrade designed to replace the restrictive factory 65 mm unit on select Toyota V6 vehicles equipped with the 4.0 L 1GR-FE engine. By increasing the throttle body diameter to 76 mm and using a precision-machined billet aluminum adapter, this throttle body enhances airflow into the engine, improving throttle response and creating the potential for increased horsepower and torque without the need for additional tuning. The unique serrated/swirl design promotes airflow turbulence that aids in fuel atomization and combustion efficiency.

Installation is straightforward, using existing OEM mounting points and included hardware for a secure, direct bolt-on fit. The throttle body features plug-and-play electronics, eliminating the need for complex wiring changes. This aFe Power throttle body works with both stock and aftermarket cold air intake systems, making it a great performance upgrade for enthusiasts looking to boost daily driving power or improve engine responsiveness in off-road and highway applications. Note that idle may initially run high as the ECU adapts to the larger throttle body, and this part is not CARB compliant for use in emissions-controlled states.