FAST Big Mouth Throttle Body

2003–2018 Dodge / Chrysler / Jeep / Ram Models

54089

Overview:

The FAST 87mm Big Mouth Throttle Body is engineered to enhance throttle response and overall engine performance for a wide range of Dodge, Chrysler, Jeep, and Ram vehicles from 2003 to 2018. Designed for enthusiasts and professionals seeking improved airflow and throttle precision, this throttle body addresses common issues found in stock and aftermarket units, particularly in boosted applications. Its increased throttle blade thickness eliminates deflection, ensuring consistent and reliable throttle control under demanding conditions.

Whether upgrading a muscle car, SUV, or pickup truck, the FAST Big Mouth Throttle Body delivers smoother operation and improved engine responsiveness, making it an ideal choice for performance builds and daily drivers alike.

Key Features:

This throttle body combines advanced engineering with durable materials to provide a superior throttle control experience. Key features include:

• 87mm throttle bore optimized for Chrysler HEMI and Ford Coyote engines
• Increased throttle blade thickness to prevent deflection during high boost or aggressive driving
• Smoother offset blade pivot design for enhanced throttle response
• Beefed-up linkage and dual throttle spring mechanism for total throttle control and reliability
• Black wrinkle powder coating finish for corrosion resistance and a sleek appearance
• Compatible with a wide range of Dodge, Chrysler, Jeep, and Ram models from 2003 to 2018
• Improved throttle blade and pivot assembly for consistent performance
• Direct bolt-on replacement for factory throttle bodies with no major modifications required

Construction & Design:

Crafted from high-quality billet aluminum, the FAST Big Mouth Throttle Body offers exceptional strength and durability while maintaining a lightweight profile. The billet construction ensures precise machining tolerances, contributing to improved airflow and throttle blade stability. The black wrinkle powder coating not only enhances the throttle body's aesthetic appeal but also provides robust protection against corrosion and wear, extending the life of the component in harsh engine bay environments.

The throttle blade is engineered with increased thickness to resist deflection, a common issue in other throttle bodies, especially under boosted conditions. The offset blade pivot design reduces friction and allows for smoother, more responsive throttle actuation. Additionally, the reinforced linkage and dual spring setup guarantee consistent throttle return and control, even during aggressive driving or high-performance applications.

Installation & Fitment:

The FAST 87mm Big Mouth Throttle Body is designed as a direct replacement for factory throttle bodies on numerous Dodge, Chrysler, Jeep, and Ram models spanning from 2003 through 2018. Installation is straightforward and typically requires no special modifications, making it accessible for both professional installers and experienced enthusiasts. The throttle body fits a broad range of vehicles including popular models such as the Dodge Ram 1500, 2500, and 3500 (2003–2018), Dodge Durango (2004–2018), Chrysler 300 (2005–2018), Jeep Grand Cherokee (2005–2018), Dodge Charger (2006–2018), and Dodge Challenger (2009–2018).

For applications that require sensors, this throttle body includes all necessary provisions. For sensor-less versions, refer to part number 54088.

What's Included:

• FAST 87mm Big Mouth Throttle Body with black wrinkle powder coating
• Dual throttle springs installed
• Reinforced throttle linkage assembly
• Installation hardware (where applicable)
• Detailed installation instructions

Ideal For:

This throttle body is perfect for performance enthusiasts, tuners, and professional builders seeking to upgrade their vehicle’s throttle response and airflow capacity. It is especially beneficial for those running boosted or high-horsepower setups who require a throttle body that resists blade deflection and maintains precise control under demanding conditions. Additionally, it suits daily drivers looking to improve throttle smoothness and responsiveness without sacrificing reliability.

FAST (Fuel Air Spark Technology) develops aftermarket EFI and engine-management solutions for high-performance street and race builds. From throttle-body and multi-port EFI systems to supporting ignition and fuel-system components, FAST is aimed at enthusiasts who want modern tunability, cleaner drivability, and strong power potential.