Bellows Kit for MerCruiser Alpha One Gen II

Key features

• This kit is a complete bellows service solution for MerCruiser Alpha One Gen II sterndrives (1991–Present) and Vazer drives. It interchanges with OEM numbers 816431A1 (U-joint bellows), 18654A1 (exhaust bellows), and 74639Q02 (shift cable bellows) .
• The kit prevents water intrusion into the transom assembly, protecting the U-joint, gimbal bearing, and shift cable from saltwater corrosion and premature failure — an essential maintenance item for sterndrive reliability .
• Constructed from durable, flexible marine-grade rubber compounds with ribbed design — withstands steering and trimming flex while maintaining a watertight seal. Kit includes stainless steel hose clamps for both ends of each bellows .
• Comprehensive service kit covers all three critical bellows plus related seals: U-joint bellows (816431A1), exhaust bellows (18654A1), shift cable bellows (74639Q02), and bell housing gasket kit (27-94996Q2) on some assemblies. Also fits for MerCruiser 3.0L, 4.3L, 5.0L, and 5.7L engines .
• Please verify your sterndrive model and serial number before purchase — fits for Alpha One Gen II from 1991 onward (serial 0D469859 & Up). Not compatible with Alpha One Gen I (1990 & older) or Bravo models. Professional installation is strongly recommended for proper sealing .

Free shipping included. 30-day hassle-free returns.