This gimbal bellows for MerCruiser sterndrives is a replacement part for Bravo I, Bravo II, and Bravo III. The bellows is designed for the transmission's U-joint area between the drive and the bell housing.
The gimbal bellows forms a flexible seal around the U-joint and protects the area against water ingress. It is also referred to as a drive bellows, transmission bellows, or U-joint bellows and should not be confused with the separate exhaust bellows in the drive system.
The spare part cross-references to MerCruiser/Mercury original reference 86840A3. This number was later superseded by OEM no. 8M0062406, while 86840A05 is a previous number in the same spare parts chain. The item is a replacement part and is not documented as an original Mercury or Quicksilver part.
Compatible drives
MerCruiser Bravo I
MerCruiser Bravo II
MerCruiser Bravo III
Spare part cross-references
Documented aftermarket cross-references for the same OEM reference include Sierra 18-2756, GLM 89140, Mallory 9-72702, and CEF 500509K.
Related OEM assembly components
For the corresponding OEM assembly 8M0062406, grounding clip 54-86049, hose clamp 54-815504372, and sleeve 862209 are registered as related installation components. It is not documented that these parts are included with this gimbal bellows.
Always check your drive model and original part number before purchasing.
Key featuresGimbal bellows for the transmission's U-joint area
For MerCruiser Bravo I, Bravo II, and Bravo III
Protects the U-joint area against water ingress
Original reference: 86840A3
Current OEM replacement number: 8M0062406
Supplied as 1 pc.
