Rareelectrical Pinion Bearing Compatible with Mercruiser Mr Alpha One Gen Ii Mercury Mariner V6 Johnson Evinrude V4 V6 Replaces 31-42647A1 5007751

MERCURY / MARINER OUTBOARDS: V6 150HP, 175HP, 200HP, 225HP (1982-current) Fits 4.750" diameter gearcase Mercury/Mariner V6 models JOHNSON / EVINRUDE V8 OUTBOARDS: V8 Loop Charged 250HP, 275HP, 300HP (1985-2006) V8 FICHT / E-TEC 250HP, 275HP, 300HP (1999-2006) Note: Fits 4.750" diameter large gearcase V4, V6, and V8 models MERCRUISER STERNDRIVE LOWER UNITS: MR (Mercury Racing) Lower Unit Alpha One Lower Unit Alpha One Gen II Lower Unit All MerCruiser models using 31-42647A1 (see OEM number) CHRYSLER / FORCE / US MARINE OUTBOARDS: 3-Cyl 90HP (1991-1994) 4-Cyl 120HP (1990-1994) 5-Cyl 150HP (1989-1994) OEM PART NUMBERS: Johnson/Evinrude (OMC): 0387817 / 387817 Johnson/Evinrude (OMC): 5007751 Chrysler / Force / US Marine: 31-42647A1 / 3142647A1 Chrysler / Force / US Marine: 31-F694057 / 31F694057 Mercury / MerCruiser: 31-42647A1 / 31-42647 447-304 PINION BEARING — Multi-Brand Outboard and Sterndrive Gearcase Rebuild: High-volume tapered roller pinion bearing for large-format (4.750" diameter) outboard and sterndrive gearcases. Supports the driveshaft pinion gear at the base of the lower unit, transferring power from the driveshaft to the forward and reverse gears. Fits the pinion journal with 1.125" bore. Critical for smooth gearcase operation — replace during any gearcase rebuild or when metallic debris is found in the gear oil. Covers Chrysler/Force 90-150HP (1989-1994), Johnson/Evinrude 4-Cyl through V8 (85-300HP, 1978-2006), Mercury/Mariner V6 (1982-current), MerCruiser MR/Alpha/Alpha Gen II, and OMC Stringer/Cobra sterndrives (1978-1993). ⚠️ IMPORTANT: Verify OEM part number before ordering to ensure proper fitment. Fits 4.750" diameter large gearcase only.

• Compatible with Chrysler / Force, Johnson/Evinrude. Please verify your OEM part number from your original unit to help ensure fitment.
• Replaces: Oem Part Numbers: / Johnson/Evinrude (Omc): 0387817 / 387817 / Johnson/Evinrude (Omc): 5007751 / Chrysler / Force / Us Marine: 31-42647A1 / 3142647A1 / Chrysler / Force / Us Marine: 31-F694057 / 31F694057 / Mercury / Mercruiser: 31-42647A1 / 31-42647 / Specifications: / Type: Tapered Roller Pinion Bearing / Location: Driveshaft Lower / Pinion Gear / Bearing I.D.: 1.125 Inches / Gearcase Diameter: 4.750 Inch Gearcase (Large Gearcase) /
• Applications: Chrysler / Force / Us Marine Outboards: / 3-Cyl 90Hp (1991-1994) / 4-Cyl 120Hp (1990-1994) / 5-Cyl 150Hp (1989-1994) / Johnson / Evinrude 4-Cylinder Outboards: / 4-Cyl Cross Flow 100Hp, 115Hp, 140Hp (1984-1998) / 4-Cyl Looper 85Hp, 90Hp, 100Hp, 115Hp (1989-2001) / 4-Cyl 60-Degree 90Hp, 100Hp, 115Hp (1995-2006) / Johnson / Evinrude V6 Outboards: / V6 Cross Flow 150Hp, 175Hp, 200Hp (1984-1988) / V6 Loop Charged 150Hp, 175Hp, 200Hp, 225Hp
• Applications: 175Hp, 200Hp, 225Hp (1988-2006) / V6 Ficht / E-Tec 150Hp, 175Hp, 200Hp, 225Hp (1999-2006) / V6 Direct Injection 200Hp, 225Hp, 250Hp (2000-2006) / / Johnson / Evinrude V8 Outboards: / V8 Loop Charged 250Hp, 275Hp, 300Hp (1985-2006) / V8 Ficht / E-Tec 250Hp, 275Hp, 300Hp (1999-2006) / Note: Fits 4.750" Diameter Large Gearcase V4, V6, And V8 Models / / Mercury / Mariner Outboards: / V6 150Hp, 175Hp, 200Hp, 225Hp (1982-Current) / Fits 4.750"...
• Bearing - Source: Aftermarket