55100-94504-02M Suzuki 20" Long Gearbox | Genuine Used Part

🔧 Product Description

Genuine Suzuki DT115 / DT140 20-Inch Gearcase Housing - Part Number: 55100-94504-02M

A genuine Suzuki 20-inch gearcase case assembly for early DT115 and DT140 V4 two-stroke outboards. The 94504 housing was used through the first production serial break and was replaced by revised 94507 and later 94510 housings. The part number identifies the case assembly; internal gears and shafts are included only when the item is sold complete.

⚙️ Key Features

• Genuine Suzuki V4 two-stroke gearcase housing
• Correct part number 55100-94504-02M
• 20-inch long-shaft configuration
• Used on early DT115 and DT140 engines
• Early-production housing through serial 304574

🚤 Compatibility

• Suzuki DT115 20-inch two-stroke
• Suzuki DT140 20-inch two-stroke
• Primary early application: 1983-1985
• 55100-94504-02M applies through engine serial 304574
• Revised 55100-94507-02M applies from serial 404575

🔌 Function

The case supports the V4 gear train and propeller shaft, carries exhaust and cooling-water passages and forms the lower hydrodynamic housing.

⚠️ Common Signs of Failure

• Wrong serial-break housing is used
• Bearing dimensions do not match later internals
• Housing is cracked or corroded
• Skeg is broken
• Oil-drain threads are stripped
• Internal components are missing from a bare case

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 55100-94504-02M used through serial 304574
• 55100-94507-02M used from serial 404575
• 55100-94507-02M → later 55100-94510-02M in applicable service catalogues
• Intermediate 94505 and 94506 revisions exist within the same housing family

OEM / Related Numbers

• 55100-94504-02M
• 55100-94505-02M
• 55100-94506-02M
• 55100-94507-02M
• 55100-94510-02M
• Related 945-series gears, bearings, propeller shaft and water filters

Aftermarket / Verified Equivalents

• No verified new aftermarket bare housing
• Used genuine 945-series case assemblies
• Specialist remanufactured Suzuki DT115 / DT140 lower units
• Aftermarket seal, bearing, clutch and water-pump service parts are available separately

📦 Condition

• Genuine used part
• Internal gears and driveshaft are included only where shown
• In good working condition unless otherwise stated