The Mercury Cable Adapter Kit from Buckshot Racing #77, which replaces the OEM Mercury part number 64-892790A01, is the correct and proven solution for adapting universal marine control cables to Mercury engine-side throttle and shift linkages.
 
In many real-world rigging scenarios—especially repowers, custom builds, and In-Control upgrades—standard cables such as C2, C8, Mach Zero, and 33C/3300 series do not directly connect to Mercury engines.
 
This adapter kit provides the proper interface, allowing those widely used cables to function correctly with Mercury’s unique linkage design.
 
Designed for Universal Cable Conversion
 
Most aftermarket and replacement control systems are built around standardized cable ends, typically using the 33C-style threaded connection.
 
Mercury engines, however, utilize a different geometry and attachment style at the throttle and shift linkage. This difference creates a mismatch that prevents the direct installation of universal cables.
 
The OEM 64-892790A01 adapter kit resolves that issue by converting the cable end into a Mercury-compatible configuration.
 
Once installed, it restores proper cable travel, alignment, and adjustment range. This ensures that both throttle and shift systems operate smoothly and precisely, just as Mercury intended.
 
For anyone replacing older cables, upgrading controls, or building a custom setup, this adapter becomes a necessary component rather than an optional one.
 
Broad Fitment Across Mercury Engines
 
This adapter is designed for use across a wide range of Mercury Marine and Mercury Racing engines, covering applications from approximately 40 horsepower up to 300 horsepower that utilize mechanical throttle and shift systems. Its compatibility spans multiple generations of Mercury design, making it highly versatile.
 
It is commonly used on legacy 2-stroke Mercury V6 engines, including the 2.0L, 2.4L, and 2.5L platforms found in models such as the 150, 175, 200, and 225 Pro Max.
 
It also supports performance platforms like XR2, XR4, XR6, and XRi, as well as high-performance engines including the 260 EFI, 280 ROS, and 300 Drag.
 
Beyond outboards, this adapter is also applicable to many MerCruiser sterndrive systems and later Mercury engines that continue to use mechanical cable controls. This wide fitment makes it a go-to solution for both restoration work and modern rigging projects.
 
Why the Correct Adapter Matters
 
Mercury’s engine-side cable connection is unique, and without the proper adapter, universal cables will not attach or function correctly. Attempting to rig without the correct interface can lead to improper cable geometry, limited adjustment range, and unreliable operation.
 
Using the OEM-based adapter ensures that the cable system operates within the correct parameters. It allows full throttle travel, precise shift engagement, and proper neutral positioning. These factors are critical not only for smooth operation but also for protecting internal components such as the lower unit.
 
Installation and Real-World Application
 
The adapter installs directly at the engine connection point, where the throttle and shift cables attach. Once installed, it allows universal cables to be adjusted and tuned just like factory Mercury cables. This simplifies the rigging process while maintaining OEM-level functionality.
 
This is particularly useful in applications involving custom builds, repowers, aftermarket control boxes, or performance setups where flexibility in cable selection is required. By enabling the use of widely available cable types, the adapter reduces cost and increases availability without sacrificing performance.
 
OEM and Cross Reference Information
 
The primary OEM Mercury part number for this adapter is 64-892790A01, which has been updated and is commonly superseded by 8M0067804. It is also referenced in some catalogs as 892790A01, all of which trace back to the same original Mercury design.
 
In the aftermarket and rigging industry, this adapter is widely known under alternative identifiers such as CA27319P from SeaStar / Teleflex, and K56 from Uflex, as a general aftermarket reference.
 
While these numbers are commonly used, they all correspond to the same function and design, with 64-892790A01 remaining the correct OEM Mercury reference.
 
Performance and Reliability Benefits
 
 
The Mercury Cable Adapter Kit from Buckshot Racing #77 (replacing OEM 64-892790A01 / 8M0067804) is a small but essential component in any Mercury rigging setup that uses universal cables.
 
It provides the correct interface between modern cable systems and Mercury engines, ensuring proper function, adjustability, and long-term reliability.
 
At Buckshot Racing #77, we recommend using the correct OEM-based adapter to eliminate guesswork and ensure your throttle and shift systems perform exactly as intended.
 
Whether you are rigging a stock fishing motor or building a high-performance Mercury V6, this adapter helps you get it right the first time.