Mercury MerCruiser Bushing Assembly 8M0112749

Mercury / MerCruiser Quicksilver Bushing Assembly — 8M0112749

The Mercury Quicksilver 8M0112749 Bushing Assembly is a genuine OEM shift shaft bushing used in the MerCruiser sterndrive shift system. It supports the shift shaft where it passes through the housing, helping maintain proper alignment while allowing smooth movement of the shifting mechanism.

Key Specifications

• Part Number: 8M0112749

• Mercury Format: 23-8M0112749

• Component Type: Shift shaft bushing assembly

• OEM Brand: Mercury Marine / Quicksilver

• Weight: approx. 0.08 lb

Compatible Drives / Applications

Commonly used on MerCruiser sterndrive systems, including:

• MC-I drives

• R and MR drives

• Alpha One sterndrives

Typically used on drives produced approximately 1978–1995, depending on the shift system configuration.

Function

The bushing assembly supports the shift shaft as it passes through the drive housing, allowing the shaft to rotate smoothly when the operator shifts between forward, neutral, and reverse.

This helps ensure:

• Smooth gear engagement

• Proper shift shaft alignment

• Reduced wear on shift linkage components

Service Notes

A worn or damaged shift shaft bushing may cause:

• Loose or sloppy shifting

• Difficulty engaging forward or reverse

• Increased wear on shift linkage components

Replacing the bushing assembly restores proper support for the shift shaft and helps maintain reliable shifting performance.

⚠️ Fitment Tip:
Always verify compatibility using the sterndrive model and serial number. MerCruiser shift systems vary by drive generation, and the correct bushing depends on the exact sterndrive configuration.