Sierra 18-2097 U-Joint Permalube, Replaces 805536A2, for MerCruiser Bravo One/Two/Three Sterndrives

The Sierra 18-2097 is a Permalube u-joint built as a direct replacement for the u-joint used in MerCruiser Bravo One, Two, and Three sterndrives (all ratios), including the Bravo One X, Two X, Three X (all ratios), Bravo One XR/XZ (all ratios), and Bravo One XR Sportmaster (all ratios), as well as Integrated Transom applications. The u-joint transmits rotational drive from the driveshaft to the propeller shaft through the drive's u-joint bellows/gimbal assembly, and it is a wear item that should be inspected and replaced as part of routine sterndrive maintenance or whenever play, corrosion, or roughness is found in the joint. Permalube construction means the joint is factory-packed with grease at the needle bearings, so it does not require an external grease fitting to be serviced during installation. The part is machined for a precise fit against the yoke and cross bearing surfaces it mates to. Sierra manufactures the 18-2097 as a cross-reference to the original Mercury Marine u-joint, so it installs the same as the factory part on the drives listed above without modification.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2097
• Product Type: U-Joint
• Lubrication: Permalube
• Fitment: Bravo One, Two, & Three (All Ratios), Bravo One X/Two X, Three X (All Ratios), Bravo One XR/XZ (All Ratios), Bravo One XR Sportmaster (All Ratios) & Integrated Transom
• Replaces (OEM): 8055361, 805536A1, 805536A2
• Weight: 1.23 pounds
• Product Dimensions: 1.31 x 5.5 x 3.44 inches
• Exterior Finish: Machined
• UPC: 808282239947

Fitment

• Bravo One, Two, & Three (All Ratios)
• Bravo One X/Two X, Three X (All Ratios)
• Bravo One XR/XZ (All Ratios)
• Bravo One XR Sportmaster (All Ratios)
• Integrated Transom

Replaces (OEM)

• 8055361
• 805536A1
• 805536A2

Frequently Asked Questions

What OEM part numbers does the Sierra 18-2097 replace? It cross-references to Mercury Marine numbers 8055361, 805536A1, and 805536A2, so any of those OEM numbers point to the same u-joint as the Sierra 18-2097.

Which sterndrives does this u-joint fit? The 18-2097 is built for MerCruiser Bravo One, Two, and Three drives (all ratios), including Bravo One X/Two X, Three X (all ratios), Bravo One XR/XZ (all ratios), Bravo One XR Sportmaster (all ratios), and Integrated Transom applications.

Does this u-joint fit Alpha series drives? The Sierra 18-2097 is listed specifically for the Bravo One, Two, and Three drive family and Integrated Transom applications, not for Alpha series drives.

What does Permalube mean on this u-joint? Permalube on the 18-2097 means the needle bearings are factory-packed with grease, so the joint is ready to install without needing an external grease fitting serviced at assembly.

What are the dimensions and weight of the 18-2097 u-joint? The Sierra 18-2097 measures 1.31 x 5.5 x 3.44 inches and weighs 1.23 pounds.

Is the Sierra 18-2097 a genuine Sierra part or a generic aftermarket copy? It is manufactured by Sierra under part number 18-2097 and sold under the Sierra brand, machined as a direct cross-reference to the Mercury Marine u-joint it replaces.

What is included when I order the 18-2097? You receive one Sierra 18-2097 Permalube u-joint; it is sold as a single u-joint, not a kit with seals or bellows.

How is the 18-2097 different from the Mercury Marine 805536A2 it replaces? Functionally the 18-2097 is a direct replacement for Mercury Marine 805536A2, 805536A1, and 8055361, machined by Sierra with Permalube grease packed into the bearings for the same fit and application on Bravo drives.

Can I install the 18-2097 myself or does it need a machine shop? The Sierra 18-2097 is a machined replacement u-joint sized for direct installation in the Bravo drive's u-joint assembly; no machining is required since it is made to the same fit as the OEM part it replaces.

What finish does the 18-2097 u-joint have? The Sierra 18-2097 has a machined exterior finish.

Does the 18-2097 work on Bravo One XR Sportmaster drives? Yes, the Sierra 18-2097 is listed for Bravo One XR Sportmaster (all ratios) in addition to Bravo One, Two, Three, and the other Bravo variants.