A smooth, responsive throttle starts with a properly functioning pedal assembly — the interface between driver intent and engine performance. For Paccar MX-13 engines built from 2018 through 2022, the Paccar MX13 Pedal Assembly 2018–2022: OEM S21-1024 delivers a direct-fit, factory-approved solution designed to restore accurate throttle control, reliable input signals, and dependable operation on the road.
• This pedal assembly is engineered specifically for Paccar MX-13 diesel engines from 2018 to 2022,
ensuring correct fitment and seamless compatibility with original sensor and harness connections.
• The OEM S21-1024 unit translates your foot movement into precise electronic throttle signals,
helping maintain consistent response and driving feel throughout acceleration.
• A properly functioning pedal assembly supports stable communication with the engine control module (ECM),
reducing the likelihood of throttle lag, hesitation, or unresponsive inputs that can affect drivability.
• Installing the correct OEM pedal assembly helps prevent error codes or warning lights related to throttle position,
minimizing diagnostic confusion and unnecessary service time.
• Quality construction and precise calibration contribute to long-lasting performance,
reducing the need for frequent replacements or adjustments.
• Choosing an OEM replacement like the Paccar MX13 Pedal Assembly 2018–2022: OEM S21-1024 means you get the fit, function,
and reliability that aligns with Paccar’s original design standards.
The throttle pedal assembly may seem like a small part, but it has a big impact on engine response and driver confidence. The OEM S21-1024 pedal assembly restores accurate input translation and reliable throttle control for Paccar MX-13 engines, helping ensure smooth performance and fewer interruptions. At Tamerx Diesel Parts, we provide quality components to help keep your truck performing at its best, mile after mile.





