The Mercury throttle return spring (OEM 24-8484702) and retainer clip (OEM 53-78201) are critical components in the throttle linkage system of Mercury Marine V6 outboards. These parts are especially important on high-performance and modified engines, where precise throttle control and a positive return-to-idle are essential.
With original OEM components becoming difficult to source or discontinued, this replacement kit provides a reliable solution for performance boaters, racers, and bass boat owners who need consistent throttle response and dependable operation.
Fitment: Mercury 2.0L, 2.4L & 2.5L V6 Outboards
This throttle return spring design was used across a wide range of Mercury V6 outboards from approximately 1976–2005. While commonly associated with high-performance engines such as Pro Max, EFI, Drag, and race models, the same throttle linkage design is found across many 2.0L, 2.4L, and 2.5L V6 engines.
Because of this shared layout, the spring and retainer system can be used in both performance and recreational applications, including bass boats and lake boats using factory or foot throttle (hot foot) setups. The design makes it a versatile replacement or upgrade for most Mercury V6 throttle systems of that era.
Why the Throttle Return Spring Matters
The throttle return spring is responsible for pulling the throttle linkage back to idle when the driver releases the throttle. This function is critical for maintaining control of engine speed and preventing the throttle from hanging open.
In high-performance applications, a strong and consistent return is a key safety feature, allowing the operator to immediately reduce RPM when conditions change. In recreational and bass boat use, it improves control during docking, loading, and low-speed maneuvering.
As springs age, they lose tension or corrode, which can lead to slow or incomplete throttle return. For this reason, this component should be treated as a safety and control item, not just a wear part.
High-Quality Replacement Spring (Made in USA)
Our replacement for Mercury 24-8484702 is manufactured from 302 stainless steel, providing excellent corrosion resistance and long-term durability in marine environments. The spring is precision-formed to maintain a consistent return rate, even under vibration and high-RPM operation.
Each spring is Made in the USA by a manufacturer with over a century of experience, ensuring reliable performance in both recreational and high-performance applications.
Direct Replacement for OEM 24-8484702 & 53-78201 (NLA)
This kit is designed to replace the original Mercury components directly. The spring replaces OEM 24-8484702, while the included retainer clip replaces the now discontinued 53-78201.
In the factory configuration, the spring mounts between the throttle arm and a head-bolt-mounted retainer clip. This kit allows you to replicate that setup without sourcing obsolete parts or fabricating brackets, restoring proper throttle function quickly and cleanly.
Retainer Clip Options Available
To match different builds and preferences, this kit is offered with four retainer clip options:
- Standard Steel Clip (OEM-style replacement)
- Red 6061 Billet Aluminum Clip
- Blue 6061 Billet Aluminum Clip
- Black 6061 Billet Aluminum Clip
The standard steel option provides a straightforward factory-style replacement, while the billet aluminum clips offer increased durability and a clean, finished look for performance and custom builds.
Complete Kit for Reliable Throttle Control
Each kit includes one throttle return spring and one retainer clip in your selected option. Together, these components restore a strong, consistent return-to-idle function, improving throttle feel and overall control.
For Mercury V6 outboards, this small but critical upgrade ensures the throttle system performs exactly as intended—every time you come off the throttle.
For technical inquiries, contact Mike Hill at +1-714-697-1716 or mike@buckshotracing77.com