OEM Service Parts for MerCruiser Alpha One Gen 1
✅ Verified Fit for Your Engine
Year Range: 1983-1990
Model: MerCruiser Alpha One Gen 1
Serial Range: 622557 thru 0F3869950
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Transom Assembly
OEM MerCruiser transom service kit 30-803097T1
Sterndrive transom seal & service kit 803097T1 is for use with MerCruiser R, MR and Alpha One Gen 1 sterndrives. The kit includes gaskets, seals and bellows needed to seal the transom at the upper drive housing. See your owner's manual, parts listing or service manual for exact application and installation instructions.
For use on MerCruiser R, MR and Alpha One sterndrives (1978 to 1990)
Includes outdrive gasket, o-ring seals, bellows, gimbal bearing and water hose for full transom service
See your owner's manual, parts listing or service manual for exact application and installation instructions
Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive
OEM MerCruiser lower shift cable assembly 8M0176524
Lower shift cable kit is built for long life and maximum performance in all weather conditions to below 0°F. They employ layered technology structure to create a smooth operating, durable control cable. Remove stuck, stiff or damaged cable and replace the new cable in reverse order. Kit contains all lower shift cable components. Easy to replace with common tools.
Fit Application:
MerCruiser Alpha One Gen II
MerCruiser Alpha One Gen I
MerCruiser MC‑I, R, & MR (1978 and newer)
OEM MerCruiser Drive/Bell Housing Gasket 27-94996Q2
This kit contains the six gaskets for installation of the outdrive to bell housing of MerCruiser Alpha One (Gen I & II), R, and MR (serial No. 6225577 and above, 1983 and newer) drives.
Complete 6-piece installation gasket kit for MerCruiser drives.
Made from durable gasket, seal and o-ring materials for long service life
Ensures proper mating and protection of metal surfaces
Replace all the gaskets to ensure seal and fit when replacing the bell housing
Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your MerCruiser drive
OEM MerCruiser Alpha One Gen I Aluminum Anode Kit 888756Q04
Includes trim tab anode, gimbal nut anodes, driveshaft plate anode, and all hardware. Designed for use in freshwater or saltwater to help protect your Alpha One Gen I or MR drive from the harmful effects of galvanic corrosion. Easy to inspect and easy to replace. Complete attaching hardware kit and instructions included.
Fits 1984-1991 MerCruiser MR or Alpha One drive (serial No. 6225577-0D469828).
Complete 4-piece aluminum anode kit with attaching hardware for fast and easy replacement
Inspect anodes periodically for best protection and replace when seeing signs of corrosion or pitting
MerCruiser anodes meet or exceed mil-spec MIL-A-24779(SH) providing longer lasting protection than zinc anodes and are for use in fresh or saltwater
OEM Mercury / MerCruiser exhaust bellow 8M0124227Quicksilver
Bell housing exhaust bellows 8M0123227 is for use on MerCruiser MC-I, MR, Alpha One, Alpha One Gen II, Vazer, Bravo and Blackhawk (1963 and newer) sterndrives. The bellows is made of flexible, durable rubber for a long service life. Includes stainless steel hose clamps at each end. Easy to install with common tools. Periodic maintenance and service helps protect your investment in your engine and your boating pleasure. See your owner's manual or service manual for specific applications and replacement instructions.
Flexible, durable bellows for use on select MerCruiser sterndrives
Includes stainless steel hose clamps at each end
Easy to install with common tools
Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive
OEM Mercury / MerCruiser shift bellow 74639A2 Quicksilver
Shift cable bellows 74639A2 is for all MerCruiser sterndrives using a drive unit shift cable. The bellows helps keep water from shift cable entry points to protect your drive mechanism. Easy to install using common tools. Kit includes hose clamps to secure both ends of the bellows.
Flexible, ribbed composite bellows to keep water from shift cable entry point
Includes hose clamps for both ends
Easy to install with common tools
OEM Quicksilver bellow adhesive 92-86166Q1 for use on all MerCruiser sterndrives to securely seal universal and exhaust bellows.
Resistant to oil, grease, gasoline and water
Size: 1.5 oz
OEM MerCruiser Install & Removal Hinge Pin Tool 91-78310
Hinge pin tool 78310 is an essential tool for all MerCruiser sterndrives. Remove and install bellows with ease. See your owner's manual, parts listing or service manual for exact application and installation instructions.
Essential hinge pin installation and removal tool for all MerCruiser sterndrives
Quicksilver 2-4-C marine grease with Teflon is a high quality marine lubricant specified by Mercury Marine for general lubricant application. Keep contacted moving surfaces properly lubricated for long life and efficient operation.
Marine Grease 2-4-C with PTFE is a high-quality, versatile lithium‑based NLGI 2 grease that won’t break down in the presence of water
Size: 8 oz
Excellent general-purpose Teflon grease for steering system cables, throttle and shift cables, tilt lock mechanisms, tilt tube, remote controls, prop shaft, swivel pins and trailer wheel bearings
Contains extreme pressure additives to withstand friction in a wide variety of heavy equipment applications and temperatures
Provides excellent resistance to oxidation and degradation
Manufacturer part number 802859Q1
OEM Mercury / MerCruiser Alpha One Gen I Drive Bellow 60932A4 Quicksilver
Bell housing U-joint bellow 60932A4 is for MerCruiser sterndrive models MC-I, R, MR, Alpha One, and TR/TRS. Easy to install using common tools. Kit includes hose clamps to secure both ends of the bellows. Quicksilver bellows provide proper fitment, easier installation, and high‑grade rubber for long‑lasting service life.
Flexible, ribbed composite bellows to keep water from entering the through the bell housing
Includes hose clamps for both ends
Easy to install with common tools
OEM Mercury / MerCruiser Gimbal Bearing 30-879194A02
Replacement gimbal bearing is permanently lubricated and a plug for the grease fitting used in prior versions with greaseable bearing. Replacement gimbal bearing for select MerCruiser sterndrives and is precision made to exact tolerances specific to your drive unit. Bearing kit is complete and ready for installation.
Fits Applications:
MerCruiser Alpha One Gen II (1997 and older)
MerCruiser Bravo One, Two and Three (1996 and older)
MerCruiser MC-I, R, MR, Alpha One Gen I (1991 and older)
Outdrive
OEM Mercury / MerCruiser water pump repair kit for MerCruiser R, MR and Alpha One Gen I sterndrives, and Mercury / Mariner outboards with short vane impellers.
Complete 14-piece water pump repair kit
Designed for durability to provide higher flow rates and cooling flow to protect your engine
Kit contains gaskets, o-ring, face plate, impeller, key and water guide tube for easy installation with common tools
Impeller elastomers provide improved flexibility across broad temperature ranges throughout the boating season
Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your older Mercury or Mariner outboard
OEM MerCruiser Alpha One Gen I Aluminum Anode Kit 888756Q04
Includes trim tab anode, gimbal nut anodes, driveshaft plate anode, and all hardware. Designed for use in freshwater or saltwater to help protect your Alpha One Gen I or MR drive from the harmful effects of galvanic corrosion. Easy to inspect and easy to replace. Complete attaching hardware kit and instructions included.
Fits 1984-1991 MerCruiser MR or Alpha One drive (serial No. 6225577-0D469828).
Complete 4-piece aluminum anode kit with attaching hardware for fast and easy replacement
Inspect anodes periodically for best protection and replace when seeing signs of corrosion or pitting
MerCruiser anodes meet or exceed mil-spec MIL-A-24779(SH) providing longer lasting protection than zinc anodes and are for use in fresh or saltwater
OEM Mercury / MerCruiser 92-8M0222065 Gear Oil SAE 90 (32 oz)
Clean oil is essential in reducing friction and preventing damage to internal components, providing many years of engine life. Engineered for sterndrive and outboard lower units, this high performance SAE 90 gear lube has been extensively tested to ensure impressive protection against corrosion and wear. Specifically formulated to help prevent failures due to water entering the gear housing.
Lower unit gear oil formulated to protect against corrosion and excessive wear
Designed for outboard motor lower unit and sterndrive applications above 75hp
Extreme pressure synthetic additives protect gears from metal to metal contact
SAE 90 viscosity
Manufacturer part number 8M0222065
OEM Quicksilver gear lube pump 91-8M0072133 outboard or sterndrive 3/8-16 drain plug. Easily replace your lower unit oil with this pump. Fits all quart and literbottles. Fits any outboard or sterndrive with a 3/8‑16 drain plug. Use adapter (included) for gear cases with an M8x1.25 drain plug.
Outboard or sterndrive gear lube pump
Fits all quart and liter bottles
Fits any outboard or sterndrive with a 3/8‑16 drain plug
Use adapter (included) for gear cases with an M8 X 1.25 drain plug
OEM Mercury / MerCruiser magnetic drain crew & Seal 22-8M0058389
Lower unit gear lube drain and fill hole screw and seal 22-8M0058389 is used with 3/8-16 drain/fill hole screw on all MerCruiser sterndrives, Mercury and Mariner outboards except the Verado series. This is the magnetic plug screw version, the magnet imbedded in the screw plug attracts any ferrous metal shavings to keep them from suspension in the gear lube and causing damage to gears.
OEM Mercury / MerCruiser vent or drain screw with seal 79953Q04
Lower unit gear lube vent or drain and fill hole screw with seal 79953Q04 is used with 3/8-16 drain/fill hole screw on all MerCruiser sterndrives, Mercury and Mariner outboards except the Verado series. This is the non-magnetic plug screw version.
OEM Mercury / MerCruiser drain & vent plug gasket yellow 26-8M0204693. Sealing washer is a rubber-coated stainless steel washer engineered for Mercury, Mariner, and MerCruiser gearcase drain and fill applications with 3/8-16 screw holes. OEM sealing washer reduces risks of water intrusion and gearcase damage.
Sold individually (price is per sealing washer).
OEM MerCruiser Drive/Bell Housing Gasket 27-94996Q2
This kit contains the six gaskets for installation of the outdrive to bell housing of MerCruiser Alpha One (Gen I & II), R, and MR (serial No. 6225577 and above, 1983 and newer) drives.
Complete 6-piece installation gasket kit for MerCruiser drives.
Made from durable gasket, seal and o-ring materials for long service life
Ensures proper mating and protection of metal surfaces
Replace all the gaskets to ensure seal and fit when replacing the bell housing
Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your MerCruiser drive
Recommended Service Guide
Bellows:
Inspect annually for cracks, stiffness, or leaks
Replace proactively every 3–5 years depending on use and environment
Gimbal Bearing:
Inspect annually for noise or vibration (especially when turning)
Replace proactively every 3–5 years or immediately if noisy/rough
Anodes:
Inspect annually for heavy pitting
Replace once 50% consumed. Frequency based on storage and environment
Lower Shift Cable:
Inspect annually for stiffness or sheathing wear
Replace proactively every 3–5 years with other drive removal service
Transom Assembly
Gear Oil:
Drain & fill annually or every 100 hours
Replace vent and drain seals with every service
Water Impeller:
Monitor if engine operates in normal temperature
Replace proactively every 2-3 years depending on use and environment
Propeller Shaft:
Inspect and grease propeller shaft annually or every 50 hours
Universal Joint / Shaft Spline:
Inspect and grease annually or every 300 hours
Outdrive
Disclaimer: This is not a full service list, only suggested intervals for common components. Always follow official MerCruiser manuals for complete maintenance