55100-87J50-OEP Suzuki DF40 & DF50 Long Shaft Gearbox (Complete) | Genuine Used Part

🔧 Product Description

Genuine Suzuki DF40 / DF50 Shadow Black 20-Inch Gearcase Housing - Current Part Number: 55100-87J50-0EP

A genuine Suzuki Shadow Black gearcase housing for original-generation DF40 and DF50 four-stroke outboards. Despite the supplied title, 55100-87J50-0EP is a gearcase assembly or housing number and does not by itself confirm that gears, shafts, bearing carrier and water-pump components are included. It is the latest documented housing in a long 87J revision chain.

⚙️ Key Features

• Genuine Suzuki OEM gearcase housing

• Current number 55100-87J50-0EP

• 20-inch long-shaft configuration

• Standard rotation DF40 / DF50 family

• Shadow Black finish

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 55100-87J50-0EP supersedes or is equal to 55100-87J40-0EP

• Earlier related revisions: 55100-87J24, 87J23, 87J22, 87J21, 87J20, 87J10 and 87J01, all in 0EP finish

• The revision chain identifies the bare case assembly rather than a guaranteed complete lower unit

OEM / Related Numbers:

• 55100-87J50-0EP

• 55100-87J40-0EP

• 55100-87J24-0EP

• 55100-87J23-0EP

• 55100-87J22-0EP

• 55100-87J21-0EP

• 55100-87J20-0EP

• 55100-87J10-0EP

• 55100-87J01-0EP

Aftermarket / Verified Equivalents:

• No verified direct aftermarket bare housing

• Used genuine Suzuki 87J-series housings

• Specialist remanufactured complete DF40 / DF50 lower units

• Aftermarket gear set 57300-88810 and seal / water-pump service components where catalogued

🚤 Compatibility

• Suzuki DF40 original-generation four-stroke

• Suzuki DF50 original-generation four-stroke

• 20-inch standard-rotation applications

• Primary model-year range: approximately 1999-2010

• 55100-87J24 is specifically documented on DF40 / DF50 20-inch standard-rotation units

🔌 Function

The housing supports the gears, shafts, bearing carrier and water pump and forms the hydrodynamic lower body beneath the driveshaft housing.

Common signs of failure:

• Bearing bores are worn

• Carrier threads are corroded

• Housing is cracked

• Skeg or cavitation plate is damaged

• Oil passages or drain threads are damaged

• Internal parts are assumed included when only the housing is supplied

📦 Condition

• Genuine used part

• Internal gears, shafts and water-pump components are included only where shown

• In good working condition unless otherwise stated