The Mercury Yoke for the Bottom Swivel Pin (878182) is a factory-new, genuine Mercury Marine part — not an aftermarket or reproduction component. Manufactured by Mercury, this OEM yoke ensures exact fitment, precise alignment, and factory-original performance on a wide range of Mercury 2-stroke V6 outboards.
This part directly fits 135–225 horsepower Mercury V6 2-stroke engines, including 2.0-liter, 2.4-liter, and 2.5-liter midsections. Common compatible models include XR2, XR4, XR6, XRi EFI, 225 Pro Max, 260 EFI, and 280 ROS Offshore. It replaces multiple legacy part numbers — including 86580A1, 86580A2, 86580A3, 86580F3, and 878182T01 — ensuring complete compatibility with Mercury’s clamp bracket and swivel pin assemblies.
OEM Fitment and Engine Coverage
This yoke is confirmed for the following Mercury outboard families and models:
2.0L V6: 135hp, 150hp (Black Max, XR2, XR4)
2.4L V6: 175hp, 200hp (XRi EFI, Bridgeport, Offshore)
2.5L V6: 200hp, 225hp, 225 Pro Max, 260 EFI, 280 ROS
Compatible with both standard and high-performance midsections, this part maintains the original steering geometry across all 2-stroke V6 configurations from the late 1980s through the early 2000s.
Function and Technical Role
The bottom swivel pin yoke is the lower structural connection between the clamp bracket and the steering pivot assembly. It transfers helm input directly to the engine swivel system. Any wear or deformation in the yoke bore results in steering play, alignment drift, and vibration under load.
Replacing a worn yoke with a new Mercury OEM 878182 restores the original mechanical tolerance and steering precision.
This component is manufactured by Mercury using the same materials, machining processes, and surface treatment as factory-installed assemblies, ensuring durability and a perfect mechanical interface with the swivel pin and bracket assembly.
Installation and Service Notes
Installation requires supporting the outboard, removing the lower swivel pin hardware, and fitting the new Mercury 878182 yoke to the clamp bracket assembly. During installation, inspect the swivel pin, bushings, and thrust washers — replacing them as necessary prevents steering slop and maintains alignment. Follow Mercury’s official service manual for torque values, thread compounds, and lubrication procedures.
When properly installed and greased, the 878182 yoke restores smooth, precise steering and eliminates play at the tiller arm or helm. For performance setups such as XR6, 260 EFI, and 280 ROS, this component ensures stable steering feedback and accurate tracking at high RPM
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Genuine Mercury Manufacturing
This yoke is built by Mercury Marine, the original equipment manufacturer — not a third-party supplier or copy. Every unit is machined, finished, and packaged under Mercury’s production process. It carries full OEM identification and matches all factory specifications for fit and finish.
Contact Mike Hill at mike@buckshotracing77.com with technical questions