FAST Big Mouth Throttle Body

2004–2018 Dodge Durango, 2005–2008 Dodge Magnum, 2005–2018 Chrysler 300, 2005–2018 Jeep Grand Cherokee, 2006–2018 Dodge Charger, 2009–2018 Dodge Challenger

Part #: 54088

Overview

The FAST 87mm Big Mouth Throttle Body is a precision-engineered upgrade designed to improve throttle response and engine performance across a broad range of Dodge, Chrysler, Jeep, and Ram vehicles from 2004 to 2018. Built for enthusiasts and professional tuners alike, this throttle body enhances airflow and throttle control, addressing common issues like throttle blade deflection found in many aftermarket units. Whether your vehicle is naturally aspirated or boosted, the FAST Big Mouth Throttle Body provides smoother throttle operation and increased durability, helping your engine breathe more efficiently and respond faster to driver input.

This throttle body is an ideal upgrade for models including the Dodge Durango, Chrysler 300, Jeep Grand Cherokee, Dodge Charger, Dodge Challenger, and Dodge Magnum, delivering a noticeable improvement in throttle precision and overall drivability.

Key Features

Designed with advanced engineering and high-quality materials, the FAST 87mm Big Mouth Throttle Body offers several key features that ensure superior performance and reliability:

• 87mm throttle bore optimized for Chrysler HEMI and Ford Coyote engines
• Increased throttle blade thickness to eliminate deflection under load
• Smoother offset blade pivot for enhanced throttle response
• Beefed-up linkage and dual throttle spring mechanism for precise throttle control
• Black wrinkle powder coat finish for corrosion resistance and a sleek appearance
• Billet aluminum construction for strength and lightweight durability
• Direct bolt-on fitment for multiple Dodge, Chrysler, Jeep, and Ram models from 2004 to 2018
• Does not include throttle position sensor or idle air control valve (sensor-included version available as part #54089)

Construction & Design

The FAST Big Mouth Throttle Body is crafted from premium billet aluminum, combining strength with lightweight durability to withstand the demands of high-performance driving. Its black wrinkle powder coat finish not only protects against corrosion but also adds a professional, aggressive look under the hood. The throttle blade features increased thickness to prevent deflection, a common problem that can reduce throttle precision and responsiveness, especially in boosted applications.

Attention to detail is evident in the offset blade pivot design, which ensures smoother operation and quicker throttle response. The reinforced linkage and dual spring system provide consistent and reliable throttle control throughout the entire RPM range, making this throttle body a robust and dependable upgrade.

Installation & Fitment

Installation of the FAST 87mm Big Mouth Throttle Body is straightforward for experienced mechanics and enthusiasts familiar with throttle body replacements. It is designed as a direct bolt-on upgrade for a wide range of Dodge, Chrysler, Jeep, and Ram models from 2004 to 2018, requiring no major modifications. The throttle position sensor and idle air control valve are not included and must be transferred from the factory unit or sourced separately if needed.

Compatible models include but are not limited to:

• Dodge Durango (2004–2018)
• Dodge Magnum (2005–2008)
• Chrysler 300 (2005–2018)
• Jeep Grand Cherokee (2005–2018)
• Dodge Charger (2006–2018)
• Dodge Challenger (2009–2018)

What's Included

• FAST 87mm Big Mouth Throttle Body with black wrinkle powder coating
• Dual throttle springs and reinforced linkage assembly
• Installation hardware (where applicable)

Ideal For

This throttle body is perfect for performance enthusiasts and professional tuners seeking to upgrade throttle response and airflow capacity. It is especially beneficial for vehicles running boosted or high-horsepower naturally aspirated engines that demand a more rigid throttle blade and precise control. Additionally, it suits daily drivers looking for a reliable and durable throttle body upgrade that enhances throttle feel and engine responsiveness without extensive modifications.