Description

Mercury MerCruiser Quicksilver 864596066 is a genuine OEM thrust bearing shim/race used in Bravo and high-performance MerCruiser drive assemblies. Current Mercury parts references identify this part as a SHIM/RACE, (.0655/.0664 thick), Pink, Thrust Bearing, which places it in the thickness-selective bearing setup range rather than as a generic loose race.

Key Features

• Genuine Mercury MerCruiser OEM part number 864596066.
• Identified as a thrust bearing shim/race with .0655–.0664″ thickness.
• Pink color code for thickness identification during gear setup and service.
• Used in Mercury parts diagrams as an A/R setup component in the thrust-bearing stack.
• Current Mercury dealer listing shows approximate shipping weight of 0.09 lb.

Engine Compatibility

The strongest supportable fitment for 864596066 is MerCruiser Bravo One, Bravo Two, Bravo Three, Bravo X One, Bravo X Two, Bravo X Three, Bravo XR One, Bravo XR Sportmaster, Bravo XR Three, Bravo XZ One, Integrated Transom, and Hi Performance Transom applications. Current Mercury parts sources also show it in 525 EFI, 662 SCi, and 700 SCi coverage, and in NXT1 transmission shaft-and-gear assemblies for race stern drive applications.

Serial Number Fitment Notice

Verify fitment by exact drive model, engine serial number, and the required thrust-bearing race thickness before ordering. With 864596066, the important check is not just the drive family but the exact pink .0655/.0664 shim/race specification, because Mercury lists several adjacent thickness options for the same service position.

When This Part Needs Replacement

This part is typically replaced during upper gear, driveshaft housing, or transmission setup work when the existing race is worn, damaged, or when bearing preload and gear-stack setup call for a different thickness. Because 864596066 is a calibrated shim/race rather than a one-size-fits-all bearing part, correct selection is part of the setup process itself. This service guidance is a practical inference based on Mercury’s thickness-coded thrust-bearing race listings.

Installation Notes

Install 864596066 only after confirming the correct Mercury service diagram and measuring for the required thrust-bearing stack thickness. Current parts diagrams place it in the same area as the thrust bearing assemblies, thrust collar, upper driveshaft, and clutch components, so race selection and assembly order should be checked carefully during reassembly.

Alternate/Superseded Part Numbers

Current sources reviewed show 864596066 as an active OEM Mercury number. Related thickness variants in the same thrust-bearing race range include 864596065 (black), 864596064 (light blue), 864596063 (red), 864596062 (yellow), 864596061 (green), 864596060 (orange), 864596059 (white), and 864596058 (brown).

Parts Desk Insight

This is the kind of part that is easy to misorder because the drive family can be correct while the race thickness is wrong. Matching 864596066 by the exact pink thickness code and measured setup requirement is usually the better move than ordering by the generic thrust-race description alone.

Shipping: Ships same or next day for fast Canada wide shipping.