Sierra 18-21001 Gimbal Bearing for Blackhawk 1994-1995, Serial F186717 and Up

The Sierra 18-21001 is a ball-type gimbal bearing built to support the coupling between the engine and the stern drive unit on applicable inboard/outboard boats. It is constructed of metal for durability in the marine environment and is lubricated with grease to keep the bearing running smoothly under load. The bearing carries the Sierra brand assurance that its replacement parts meet or exceed the performance of the original equipment part they replace, and it ships as a single unit ready for installation in place of a worn or failed gimbal bearing.

This bearing is compact, measuring 0.39 x 0.39 x 0.39 inches, and is designed to fit Blackhawk applications from 1994-1995 with serial number F186717 and up. Boat owners servicing their stern drive coupling in this fitment range can use the 18-21001 as a direct fit for that application. As with any drivetrain bearing, replacing a worn gimbal bearing helps prevent excess play, vibration, and premature wear on the connected driveshaft components.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-21001
• Product Type: Gimbal Bearing
• Bearing Type: Ball Bearing
• Material: Metal
• Item Dimensions (L x W x H): 0.39 x 0.39 x 0.39 inches
• Item Thickness: 25 Millimeters
• Weight: 1.2 pounds
• Compatible Lubricant: Grease
• UPC: 808282294168
• GTIN: 00808282294168
• Warranty: Limited Warranty

Fitment

• Blackhawk, 1994-1995, serial number F186717 and up

Frequently Asked Questions

What is the Sierra 18-21001 gimbal bearing used for? The 18-21001 is a ball-type gimbal bearing that supports the coupling between the engine and stern drive unit, and it is used to replace a worn or failed gimbal bearing in that application.

What boats does the 18-21001 gimbal bearing fit? This bearing fits Blackhawk applications from 1994-1995 with serial number F186717 and up.

Is the Sierra 18-21001 an OEM or aftermarket bearing? The 18-21001 is a Sierra-brand replacement bearing designed to meet or exceed the performance of the original equipment gimbal bearing it replaces.

What material is the 18-21001 gimbal bearing made from? It is made of metal, which is standard for gimbal bearings that must hold up to marine driveline loads and moisture exposure.

How much does the Sierra 18-21001 gimbal bearing weigh? The Sierra 18-21001 gimbal bearing weighs 1.2 pounds.

What are the dimensions of the 18-21001 gimbal bearing? It measures 0.39 x 0.39 x 0.39 inches, with an item thickness of 25 millimeters.

Does the 18-21001 gimbal bearing need to be lubricated? Yes, the 18-21001 is compatible with grease lubrication to keep the bearing operating smoothly.

What type of bearing is the Sierra 18-21001? The 18-21001 is a ball bearing, identified by Sierra under bearing number 18-21001.

Does the Sierra 18-21001 come with a warranty? Yes, the 18-21001 gimbal bearing is covered by a limited warranty.

How do I know if the 18-21001 is the correct gimbal bearing for my boat? Confirm your application is a Blackhawk from 1994-1995 with serial number F186717 or higher before ordering the 18-21001, since gimbal bearings vary by drive unit and serial number range.