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Forward Gear Thrust Bearing Compatible With 1985-2000 Johnson Evinrude 4-Cyl Looper 120 125 130

447-254A7
OMC OEM PART NUMBERS:
• OMC: 389042 / 0389042 (Primary — Original OEM)
• OMC: 16340 (Cross-Reference)

SPECIFICATIONS:
• Type: Forward Gear Thrust Bearing Assembly
• Position: Lower Unit Gearcase — Forward Gear Position
• Function: Handles Forward Thrust Load from Propeller
• Material: Steel Roller Bearing
• Application: Johnson/Evinrude Outboard 90-300 HP
• Application: OMC Stringer Sterndrive 1978-1985 V6/V8 + 1990-1993 4-Cyl
• Application: OMC Cobra Sterndrive 1986-1993 V6/V8 + 1990-1993 4-Cyl
• Year Coverage: 1978-2010
• Condition: New

JOHNSON/EVINRUDE APPLICATIONS:
• 4 Cyl 100 / 105 / 115 / 120 / 125 / 130 / 135 / 140 HP (1984-2010)
• 6 Cyl 150 / 155 / 175 / 185 / 200 / 225 / 235 HP Cross Flow / Looper / 60-Degree (1978-2001)
• 6 Cyl E-TEC 150 / 175 / 200 / 225 / 250 / 300 HP (2006-2010)
• 3.3L / 3.4L E-TEC V6 Outboards

OMC STERNDRIVE APPLICATIONS:
• OMC Stringer V6 / V8 / 4-Cyl Sterndrive (1978-1993)
• OMC Cobra V6 4.3L 175 / 185 / 205 HP GM (1986-1993)
• OMC Cobra V8 5.0L 230 HP / V8 5.7L 260 HP GM (1986-1993)
• OMC Cobra V8 5.8L 351 Ford (1986-1993)
• OMC Cobra 4-Cyl 3.0L 140 HP (1990-1993)

APPLICATIONS SUMMARY:
• Johnson/Evinrude/OMC Forward Gear Thrust Bearing — Lower Unit Gearcase
• Outboard (90-300HP) and Stringer/Cobra Sterndrive Compatibility (1978-2010)
• OEM 389042 / 0389042 / 16340

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

JOHNSON / EVINRUDE / OMC FORWARD GEAR THRUST BEARING — Lower Unit Gearcase (1978-2010):

JOHNSON/EVINRUDE 4-CYLINDER OUTBOARDS:
• Johnson/Evinrude 4 Cyl 135 HP Outboard (2001)
• Johnson/Evinrude 4 Cyl 100 HP 3.500" Bore Cross Flow Outboard (1984-1997)
• Johnson/Evinrude 4 Cyl 120 HP 3.500" Small Bore Looper Outboard (1985)
• Johnson/Evinrude 4 Cyl 140 HP 3.500" Small Bore Looper Outboard (1985)
• Johnson/Evinrude 4 Cyl 100 HP 3.600" Bore 60-Degree Outboard (1999-2001)
• Johnson/Evinrude 4 Cyl 105 HP 3.600" Bore 60-Degree Outboard (1999-2001)
• Johnson/Evinrude 4 Cyl 115 HP 3.600" Bore E-TEC Outboard (2007-2010)
• Johnson/Evinrude 4 Cyl 130 HP 3.600" Bore E-TEC Outboard (2010)
• Johnson/Evinrude 4 Cyl 125 HP 3.685" Big Bore Looper Outboard (1995)
• Johnson/Evinrude 4 Cyl 130 HP 3.685" Big Bore Looper Outboard (1998-2000)

JOHNSON/EVINRUDE 6-CYLINDER OUTBOARDS:
• Johnson/Evinrude 6 Cyl 150 HP 3.500" Bore Cross Flow Outboard (1978-1991)
• Johnson/Evinrude 6 Cyl 155 HP 3.500" Bore Cross Flow Outboard (1991-1992)
• Johnson/Evinrude 6 Cyl 185 HP 3.500" Bore Cross Flow Outboard (1984-1985)
• Johnson/Evinrude 6 Cyl 200 HP 3.500" Bore Cross Flow Outboard (1978-1983)
• Johnson/Evinrude 6 Cyl 175 HP 3.500" Small Bore Cross Flow Outboard (1978-1985)
• Johnson/Evinrude 6 Cyl 235 HP 3.500" Small Bore Cross Flow Outboard (1978-1979)
• Johnson/Evinrude 6 Cyl 200 HP 3.500" Small Bore Looper Outboard (1986-1987)
• Johnson/Evinrude 6 Cyl 225 HP 3.500" Small Bore Looper Outboard (1986-1987)
• Johnson/Evinrude 6 Cyl 150 HP 3.600" Bore 60-Degree Carb Outboard (1991-1995, 1999-2001)
• Johnson/Evinrude 6 Cyl 200 HP 3.600" Bore 60-Degree E-TEC Outboard (2008-2010)
• Johnson/Evinrude 6 Cyl 150 HP 3.600" Bore E-TEC Outboard (2007-2010)
• Johnson/Evinrude 6 Cyl 175 HP 3.600" Bore E-TEC Outboard (2007-2010)
• Johnson/Evinrude 6 Cyl 175 HP 3.625" Big Bore Cross Flow Outboard (1986-1987)
• Johnson/Evinrude 6 Cyl 235 HP 3.625" Bore Cross Flow Outboard (1980-1985)
• Johnson/Evinrude 6 Cyl 200 HP 3.685" Big Bore Looper Outboard (1999-2001)
• Johnson/Evinrude 6 Cyl 200 HP 3.854" Bore E-TEC 3.3 Liter Outboard (2006-2010)
• Johnson/Evinrude 6 Cyl 225 HP 3.854" Bore E-TEC 3.3 Liter Outboard (2006-2010)
• Johnson/Evinrude 6 Cyl 250 HP 3.854" Bore E-TEC 3.3 Liter Outboard (2006-2010)
• Johnson/Evinrude 6 Cyl 300 HP 3.854" Bore E-TEC 3.4 Liter Outboard (2009)

OMC STRINGER STERNDRIVE APPLICATIONS:
• OMC Stringer V6 Sterndrive Gearcase (1978-1985)
• OMC Stringer V8 Sterndrive Gearcase (1978-1985)
• OMC Stringer 4-Cyl Sterndrive Gearcase (1990-1993)

OMC COBRA STERNDRIVE APPLICATIONS (1986-1993):
• OMC Cobra V6 4.3L 262 CID 175 HP GM Sterndrive Gearcase
• OMC Cobra V6 4.3L 262 CID 185 HP GM Sterndrive Gearcase
• OMC Cobra V6 4.3L 262 CID 205 HP GM Sterndrive Gearcase
• OMC Cobra V8 5.0L 230 HP Sterndrive Gearcase
• OMC Cobra V8 5.7L 350 CID 260 HP GM Sterndrive Gearcase
• OMC Cobra V8 5.8L 351 CID Ford Sterndrive Gearcase
• OMC Cobra 4-Cyl 3.0L 140 HP Sterndrive Gearcase (1990-1993)

SPECIFICATIONS:
• Type: Forward Gear Thrust Bearing Assembly
• Position: Lower Unit Gearcase — Forward Gear Position
• Function: Handles Forward Thrust Load from Propeller
• Application: Johnson/Evinrude Outboard 90-300 HP
• Application: OMC Stringer Sterndrive 1978-1985 + 1990-1993
• Application: OMC Cobra Sterndrive 1986-1993 V6/V8 + 1990-1993 4-Cyl
• Material: Steel Roller Bearing
• Condition: New

OEM PART NUMBERS:
• OMC: 389042 / 0389042 (Primary — Original OEM)
• OMC: 16340 (Cross-Reference)

INSTALLATION:
• Step 1: Drain lower unit gear oil completely
• Step 2: Remove lower unit from outboard or sterndrive
• Step 3: Disassemble gearcase per service manual
• Step 4: Remove forward gear assembly
• Step 5: Press old thrust bearing off forward gear
• Step 6: Press new thrust bearing on forward gear (correct orientation)
• Step 7: Reassemble gearcase with new gaskets and seals
• Step 8: Refill with proper gear oil to manufacturer specification
• Step 9: Reinstall lower unit to outboard or sterndrive
• Step 10: Test forward and reverse operation before launch

SYMPTOMS OF FAILED FORWARD GEAR THRUST BEARING:
• Grinding Noise from Lower Unit During Operation
• Vibration When Shifting Into Forward Gear
• Loss of Forward Propulsion Power
• Metal Shavings in Gear Oil at Service Drain
• Lower Unit Running Hotter Than Normal
• Howling / Whining Sound from Gearcase Under Load

WHY THIS BEARING FAILS:
• Continuous Forward Thrust Load from Propeller
• Water Contamination from Worn Lower Unit Seals
• Lack of Regular Gear Oil Changes (Recommended Annually)
• Saltwater Corrosion (Improper Engine Flushing After Use)
• Impact Damage from Grounding or Hitting Submerged Objects
• Normal Wear Over Decades of Use

NOTE: Verify your OEM part number 389042 / 0389042 before ordering — Johnson/Evinrude/OMC use multiple thrust bearing designs across different gearcase generations. Always replace lower unit seals, gaskets, and gear oil during bearing replacement for optimal service life. Consider rebuilding entire gearcase if multiple wear items are showing damage.

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  • 4.0 lbs.
  • W12.0000” x H8.0000” x L15.0000”
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