Mercury Mercruiser Marine - RETAINING RING (#53-78907) PRICE: $0.00 $0.00 Part #: 53-78907 This product is no longer available. RETAINING RING Mercury Assemblies Gear Housing(Driveshaft) MARINERV-135 MARINERV-150 GEAR HOUSING(DRIVE SHAFT) MERCURY300 (3.4 LITRE) GEAR HOUSING(DRIVE-STANDARD/COUNTER ROTATION) MARINERV-175 Gear Housing, Driveshaft MERCURYV-200 (EFI) GEAR HOUSING (DRIVE SHAFT) (STANDARD ROTATION) MERCURY250/275 Gear Housing(Drive-Standard/Counter Rotation) MARINERMAGNUM II MERCURYV-200 (2.5L) 1991 ONLY MERCURYXR-4 GEAR HOUSING (DRIVE SHAFT) MARINERV-175 (SKI) GEAR HOUSING(DRIVESHAFT)(1.87:1) MARINERV-175 (MAG/EFI) MERCURYV-175XRI (EFI) MERCURYV-200XRI (EFI) GEAR HOUSING (DRIVE SHAFT) MERCURYV-225 GEAR HOUSING (DRIVE SHAFT) DIE CAST NOSE CONE RACE OUTBOARDMERC MOD-VP GEAR HOUSING (DRIVE SHAFT) MOLDED NOSE CONE GEAR HOUSING (DRIVE SHAFT) RACE OUTBOARDMERC/MAR 2.4L (EFI) GEAR HOUSING (DRIVE SHAFT) GEAR HOUSING (DRIVE SHAFT) RACE OUTBOARDMERC 3.4 (EFI) GEAR HOUSING (DRIVE SHAFT) RHR GEAR HOUSING (DRIVE SHAFT) LHR GEAR HOUSING (DRIVE SHAFT) GEAR HOUSING (DRIVE SHAFT) (RHR) RACE OUTBOARDMERC XR2 GEAR HOUSING (DRIVE SHAFT) (LHR) GEAR HOUSING (DRIVE SHAFT)RHR 2-HOLE WATER PICK-UP RACE OUTBOARDMERC/MAR XR2/MAGNUM GEAR HOUSING (DRIVE SHAFT)LHR 2-HOLE WATER PICK-UP GEAR HOUSING (DRIVE SHAFT) RACE OUTBOARDMERC MOD-VP (EFI) GEAR HOUSING (DRIVE SHAFT) GEAR HOUSING ASSEMBLY (DRIVE SHAFT) RHR RACE OUTBOARDMERC/MAR 2.4L (CARB) GEAR HOUSING (DRIVE SHAFT) LHR Gear Housing(Drive-Standard/Counter Rotation) Gear Housing(Drive - Without a Driveshaft Nut) Gear Housing(Driveshaft)(With a Driveshaft Nut) Gear Housing(Driveshaft)(Without a Driveshaft Nut) Gear Housing(Driveshaft)(With a Driveshaft Nut) MARINERV-150 Magnum MARINERV-150 Marathon MERCURYV-150 Work MERCURYV-150-XR-2 MERCURYV-1500 GEAR HOUSING(DRIVE SHAFT)(2.0:1) Gear Housing(Drive) 2:1 Ratio-14 Teeth Pinion Gear Gear Housing(Drive) 2:1 Ratio-14 Teeth Pinion Gear Gear Housing(Drive) 1.86:1 Ratio-15 Teeth Pinion Gear GEAR HOUSING(DRIVESHAFT) MARINERV-220 GEAR HOUSING(DRIVE-STANDARD/COUNTER ROTATION) MARINERV-200