Sierra Gimbal Bearing 18-21005, White - Replaces Mercruiser 30-862540A3, Mallory 9-72412

The Sierra 18-21005 Gimbal Bearing is a replacement gimbal bearing engineered to meet or exceed original equipment quality. It supports the engine coupler shaft where the outdrive connects to the transom assembly, allowing the drive to pivot for steering while carrying the rotating load from the engine. The bearing is finished in white and constructed of alloy steel for durability in the marine drive environment, and it is designed to run with grease as the compatible lubricant.

This gimbal bearing is a direct interchange for several widely used OEM and aftermarket part numbers, making it a straightforward swap when replacing a worn or failed gimbal bearing on compatible sterndrive setups. Each Sierra part is built to match or exceed the fit, form, and function of the original part it replaces.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-21005
• Bearing Type: Gimbal
• Color: White
• Material: Alloy Steel
• Item Dimensions: 4.25 x 4.25 x 2 inches
• Weight: 1.26 pounds
• UPC: 808282188474
• Compatible Lubricant: Grease
• OEM Cross-Reference: Mallory 9-72412, Mercruiser 30-862540A3, 30-879194A01, 30-862540T1, 30-862540A04

Replaces (OEM)

• Mallory 9-72412
• Mercruiser 30-862540A3
• Mercruiser 30-879194A01
• Mercruiser 30-862540T1
• Mercruiser 30-862540A04

Frequently Asked Questions

What is the Sierra 18-21005 Gimbal Bearing used for? It supports the coupler shaft connecting the engine to the outdrive, allowing the drive to pivot for steering while carrying the rotating load between the engine and sterndrive. The Sierra 18-21005 is built to meet or exceed original equipment quality for this application.

Is the Sierra 18-21005 a direct replacement for the OEM gimbal bearing? Yes, the Sierra 18-21005 is interchangeable with Mallory 9-72412 and Mercruiser 30-862540A3, 30-879194A01, 30-862540T1, and 30-862540A04, so it installs as a direct swap for any of those part numbers.

What are the dimensions of the Sierra 18-21005 Gimbal Bearing? The bearing measures 4.25 x 4.25 x 2 inches.

How much does the Sierra 18-21005 Gimbal Bearing weigh? It weighs 1.26 pounds.

What material is the Sierra 18-21005 Gimbal Bearing made of? Alloy steel is the construction material, chosen for durability in a marine drive environment.

What color is the Sierra 18-21005 Gimbal Bearing? It is finished in white.

What lubricant should be used with the Sierra 18-21005 Gimbal Bearing? Grease is the compatible lubricant for this gimbal bearing.

Which OEM part numbers does the Sierra 18-21005 replace? This bearing replaces Mallory 9-72412 and Mercruiser 30-862540A3, 30-879194A01, 30-862540T1, and 30-862540A04.

Is the Sierra 18-21005 genuine Sierra or an aftermarket copy? It is a genuine Sierra part, part number 18-21005, manufactured to meet or exceed the quality of the original equipment part it replaces.

How many gimbal bearings come in the package? The Sierra 18-21005 is sold as a single gimbal bearing unit.

What UPC is associated with the Sierra 18-21005 Gimbal Bearing? The UPC for this part is 808282188474.

Does the Sierra 18-21005 come with a warranty? Yes, the Sierra 18-21005 Gimbal Bearing is covered by a limited warranty.