Mercury MerCruiser 53-23720 Genuine OEM V8 Alpha Bravo Sterndrive Upper Cover Retaining Ring
Mercury MerCruiser 53-23720 Genuine OEM V8 Alpha Bravo Sterndrive Upper Cover Retaining Ring
Mercury MerCruiser 53-23720 Genuine OEM V8 Alpha Bravo Sterndrive Upper Cover Retaining Ring

Mercury MerCruiser 53-23720 Genuine OEM V8 Alpha Bravo Sterndrive Upper Cover Retaining Ring

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  • $6.95
  • 2 available
  • Genuine OEM Mercury Quicksilver Parts
  • V8 Alpha Bravo Sterndrive Upper Cover Retaining Ring
  • Manufacturer: Mercury, Mariner, Quicksilver, MerCruiser 
  • Model Number: Retaining Ring 
  • Part Number: 53-23720 
  • Also Known As: 23720 
  • For use with:
230 HP/260 HP INBOARD ENGINE (GM) - 230 MIE (4 BBL.) GM 305 V-8 1981-1986 898/200/228/230/260 HP R/MR/ALPHA ONE - 200 (2 BBL.) GM 305 V-81 1985-1986
662/700 SCI - 700 SCi 228 ENGINE (G.M.) - 228 (4 BBL.) GM 305 V-8 1979-1982
4.3L CARB ALPHA/BRAVO - 4.3L CARB ALPHA/BRAVO 500 CARB (502CID) 8.2L ENGINE (GEN VI) - 500 (GEN. VI)GM 502 V-8 1997-1998
454 EFI SKI ENGINE - 454 EFI (SKI) GEN. V GM 454 V-8 1995 370/400/440/460 CYCLONE TRS ENGINE - 440 TRS GM 454 V-8 1983-1986
5.0L EFI ALPHA/BRAVO 5.7L EFI ALPHA/BRAVO (GEN +) ENGINE - 5.0L EFI GM 305 V-8 1998 5.7L 2BBL 5.7LX 4BBL 350 MAG ALPHA/BRAVO - 350 MAG. ALPHA (4 BBL.) GM 350 V-8 1997
900 SC - DRY SUMP - 900 SC Dry Sump 502 MAGNUM BRAVO ENGINE - 502 MAG. BRAVO GM 502 V-8 1990-1992
370/400/440/460 CYCLONE TRS ENGINE - 400 TRS GM 454 V-8 1980-1986 340 HP/7.4L W/BORG WARNER TRANS (GM) - 7.4l MIE W/B/W GM 454 V-8 1988-1992
350 MAGNUM BRAVO (EFI/MP) - 350 MAG. BRAVO MPI GM 350 V-8 1995 5.7L COMPETITION SKI ENGINE (GEN +) - 5.7L COMPETITION SKI (GEN+) GM 350 V-8 1998
350 MAGNUM BRAVO (EFI-MP GEN+) - 350 MAG. BRAVO MPI(GEN+) GM 350 V-8 1996 350 MAG EFI TBI TOURN SKI (GEN+) - 350 MAG. EFI SKI (GEN+) GM 350 V-8 1996
200/5.0L/LX 260/5.7L 350 MAG ALPHA/BRAVO - 260 GM 350 V-8 1987 230 HP/5.0L 260 HP/5.7L ENGINE - 5.7L MIE GM 350 V-8 1988-1993
262 MAGNUM (EFI - TBI) - 262 MAG (TBI)(GEN+) 600SC GEN IV & V ENGINE - 600 SC GEN IV & V GM 502 V-8 1991-1996
325 ENGINE - 325 MIE GM 427 V-8 1968-1974 370/400/440/460 CYCLONE TRS ENGINE - 460 TRS GM 482 V-8 1983-1986
7.4L MPI BRAVO L29 (GEN VI) - 7.4L BRAVO (MPI)(GEN. VI) GM 454 V-8 1998-2000 454/502 MPI MAG BRAVO (GEN VI) - 454 MAG. MPI BRAVO (GEN VI) GM 454 V-8
7.4L BRAVO I, II, III, ENGINE - 7.4L BRAVO (GEN. VI) GM 454 V-8 1996-1997 MX 6.2L MPI BRAVO ENGINE - MX 6.2L MPI BRAVO
454 MAG MPI HORIZON/MIE 8.2L MPI - 454 MAG. MPI HORIZON (GEN. VI) GM 454 V-8 420 / 425 - 420 GM 454 V-8 1987-1989
MIE 5.7L INBOARD - 5.7L MIE GM 350 V-8 1996 350 MAGNUM TBI TOURN SKI - 350 MAG EFI SKI (GEN+) GM 350 V-8 1997
662 SCI - 662 SCi 200/5.0L/LX 260/5.7L 350 MAG ALPHA/BRAVO - 5.7L GM 350 V-8 1988-1995
5.0L / 5.7L STERNDRIVE - 5.7L CARB ALPHA/BRAVO 320 HP EFI ALPHA 1/BRAVO - 320 (EFI) GM 350 V-8 1988-1989
454/502 EFI MAG BRAVO (GEN V) - 502 EFI (GEN. V) GM 502 V-8 1993-1995 465 HP ENGINE - 465 (GEN. V) GM 502 V-8 1992-1994
5.7L 2BBL 5.7LX 4BBL 350 MAG ALPHA/BRAVO - 5.7L (2 BBL.) GM 350 V-8 1997 ACCESSORIES MERCRUISER VOLUME I - Fuel/Oil Tanks, Lines, Filter Kits and Corrosion
5.7L (ALPHA) (EFI-TBI)5.7L (BRAVO) (EFI-TBI) ENGINE - 5.7L ALPHA EFI (TBI) GM 350 V-8 1995 MIE 7.4 EFI HURTH/BORG WARNER -LH ONLY - 7.4L MIE MPI (LH) GEN. V GM 454 V-8 1995-1996
233 ENGINE - 233 MIE FORD 351 V-8 1975-1976 454 MAG MPI HORIZON AND 8.2L MIE MPI - 8.2L MIE MPI (GEN. VI) GM 502 V-8
5.7L INBOARD ENGINE - 5.7L MIE GM 350 V-8 1997 200/5.0L/LX 260/5.7L 350 MAG ALPHA/BRAVO - 5.0LX (4 BBL.) GM 305 V-8 1988-1995
5.7L/LX 350 MAG ALPHA/BRAVO - 5.7LX (4 BBL) GM 350 V-8 1996 350/6.2L BLACK SCORPION SKI (GEN+) - BLACK SCORPION MX 6.2L SKI (GEN+) V-8 2001-2002
5.7L/LX 350 MAG ALPHA/BRAVO - 350 MAG. ALPHA (4 BBL.) GM 350 V-8 1996 4.3L EFI ALPHA/BRAVO (262 CID - GEN+) - 4.3L EFI (GEN+) TBI GM 262 V-6
5.7L (ALPHA) (EFI-TBI)5.7L (BRAVO) (EFI-TBI) ENGINE - 5.7L BRAVO EFI (TBI) GM 350 V-8 1995 350 MAG MPI TOURN SKI (GEN +) - 350 MAG MPI SKI (GEN+) GM 350 V-8 1998 AND UP
5.7L CARB (MIE) (GEN+) - 5.7L CARB MIE 7.4 LX (EFI-MPI) BRAVO (GEN VI) - 7.4LX BRAVO (MPI)(GEN. VI) GM 454 V-8 1996-1997
500 EFI - 500 EFI MERC 20 - 200, 20
454 MAG MPI HORIZON/MIE 8.2L MPI - 8.2L MIE MPI (GEN. VI) GM 502 V-8 7.4L/8.2L MPI (MIE) GEN VI - 7.4L MIE MPI (LH) GEN. VI GM 454 V-8 1996-1997
898/200/228/230/260 HP R/MR/ALPHA ONE - 260 (4 BBL.) GM 305 V-8 1982-1986 7.4L BRAVO - 7.4L BRAVO GM 454 V-8 1988-1991
228 ENGINE (G.M.) - 228 MIE (4 BBL.) GM 305 V-8 1979-1980 215 ENGINE - 215 MIE FORD 302 V-8 1970-1972
8.2L W/HURTH TRANSMISSION MIE ENGINE - 8.2L MIE W/HURTH GM 502 V-8 1990-1992 MERCRUISER SEC H FRESH WATER COOLING - Exhaust / Cooling Systems and Extension Kits
5.7L TOW SPORT - 5.7L CARB SKI 228 ENGINE (G.M.) - 228 MIE (4 BBL.) GM 305 V-8 1977-1978
255 ENGINE - 255 MIE GM 350 V-8 1979-1980 450 HP (454 CID) 7.4L ENGINE - 450 (GEN. V) GM 454 V-8 1995-1996
5.0L / 5.7L EFI ALPHA/BRAVO (GEN +) ENGINE - 5.0L EFI GM 305 V-8 1999-2001 255 ENGINE - 255 MIE FORD 351 V-8 1973-1974
HP 500 BULLDOG (540 CID) - 500 Bulldog GM 540 V-8 1990-1996 454/502 MPI MAG BRAVO (GEN VI) - 454 MAG. BRAVO MPI (GEN VI) GM 454 V-8 1996-1997
5.7L/LX TBI ALPHA & BRAVO(2BBL/4BBL) - 5.7LX EFI (4 BBL.-TBI) GM 350 V-8 1996 7.4L (MIE) HURTH/BORG WARNER (GEN V) - 7.4L MIE (LH) GEN. V GM 454 V-8 1992-1996
7.4L 454 MAG BRAVO GEN V - 7.4L BRAVO (GEN. V) GM 454 V-8 1992-1996 5.7L COMPETITION SKI ENGINE - 5.7L COMPETITION SKI GM 350 V-8 1997
MARK 25 - MARK 25, 25E 5.7L INBOARD - 5.7L CARB MIE
898 (STERN DRIVE) 198 (INBOARD) ENGINE - 198 MIE (2 BBL.) GM 305 V-8 1977 MARK 30 - MARK 30, 30E
390 ENGINE - 390 MIE GM 482 V-8 1969-1970 300 TEMPEST (MR/TR) ENGINE - 300 TEMPEST GM 350 V-8 1985-1986
4.3L EFI ALPHA/BRAVO (262 C.I.D. GEN+) - 4.3L EFI (GEN+) TBI GM 262 V-6 600 SC BOBTAIL - 600 SC Bobtail 1998
7.4L 454 MAG BRAVO GEN V - 454 MAG. BRAVO (GEN. V) GM 454 V-8 1992-1994 350 MAGNUM MPI ALPHA/BRAVO (GEN+) ENGINE - 350 MAG MPI ALPHA/BRAVO
383 MAG 4V MIE REMAN - 383 Mag Inboard 4V 5.7L EFI (MIE)TBI (GEN+) - 5.7L EFI MIE GM 350 V-8 1997
575 HP ENGINE (CARD 54) - 575 GM 540 V-8 1986-1992 340 HP/7.4L W/BORG WARNER TRANS (GM) - 340 MIE W/B/W GM 454 V-8 1981-1987
5.0L/5.7L ALPHA/BRAVO GEN+ - 5.0L (2 BBL.) GM 305 V-8 1998-2001 454/502 MPI MAG BRAVO (GEN VI) - 454 MAG MPI BRAVO (GEN VI) GM 454 V-8 1998
7.4 LX (EFI-MP) BRAVO - 7.4LX BRAVO (MPI)(GEN. V) GM 454 V-8 1996 350 MAGNUM ALPHA (EFI-TBI) - 350 MAG. ALPHA EFI(GEN+) GM 350 V-8 1996
5.7L CARB INBOARD - 5.7L CARB MIE 662/700 SCI - 662 SCi
5.7LX TBI BRAV0 350 TBI MAG ALPHA (EFI) - 350 MAG. ALPHA EFI(GEN+) GM 350 V-8 1997 900 SC - 900 SC 1997-1999
350 MAGNUM EFI TOURNAMENT SKI - BLACK SCORPION 350 MAG SKI (GEN+) V-8 1996 230 HP/5.0L 260 HP/5.7L ENGINE - 5.0L MIE (4 BBL.) GM 305 V-8 1987-1995
500 BULLDOG - 500 Bulldog 1999-2001 215 ENGINE - 215 (4 BBL.) FORD 302 V-8 1970-1972
454/502 MPI MAG BRAVO (GEN VI) - 502 MAG. MPI BRAVO (GEN VI) GM 502 V-8 ACCESSORIES MERCRUISER VOLUME I - Exhaust / Cooling Systems and Extension Kits
370 HP TRS ENGINE (CARD 37) - 370 TRS GM 454 V-8 1985-1987 454/502 MPI MAG BRAVO (GEN VI) - 502 MAG MPI BRAVO (GEN VI) GM 502 V-8 1998
260 ENGINE (G.M.) - 260 (4 BBL.) GM 350 V-8 1978-1982 5.0L / 5.7L EFI ALPHA/BRAVO (GEN +) ENGINE - 5.7L EFI GM 350 V-8 1999-2001
SCORPION 377 STERNDRIVE - Scorpion 377 Sterndrive MARK 10, 10A, 15A, 28, 28A - MARK 10, 10A, 15A, 28, 28A, 28AD
525 EFI - 525 EFI 350 MAG MPI (GEN+)MIE - 350 MAG. MPI MIE (GEN+) GM 350 V-8 1998
350 INBOARD ENGINE - 350 MIE GM 454 V-8 1974-1976 5.7LX TBI BRAV0 350 TBI MAG ALPHA (EFI) - 5.7LX BRAVO EFI (GEN+) GM 350 V-8 1997
7.4L MPI (MIE) (GEN VI-L29) - 7.4L MPI MIE (L29) GEN. VI GM 454 V-8 1998-2000 540 STROKER 4V - 540 Stroker 4V
565 EFI - 565 EFI 357 MAG BRAVO 4V/357 ALPHA 4V/383 MAG BRAVO 4V - 357 Mag Bravo 4V
420 / 425 - 425 (GEN. V) GM 454 V-8 1992-1993 ACCESSORIES MERCRUISER VOLUME I - Power Steering/Tiller Handles/ Shift Kits
5.0L/5.7L ALPHA/BRAVO GEN+ - 5.7L (2 BBL.) GM 350 V-8 1998-2001 454 MAG BRAVO (GEN V) - 454 MAG. BRAVO (GEN. V) GM 454 V-8 1995-1996
525 HP ENGINE - 525 SC (GEN. V) GM 454 V-8 1996 7.4L BRAVO I, II, III, ENGINE - 454 MAG. BRAVO (GEN. V) GM 454 V-8 1996-1997
233 ENGINE - 233 FORD 351 V-8 1975-1977 575 SCI - 575 SCi
350 MAGNUM TOURNAMENT SKI (CARB) - 350 MAG (SKI) GM 350 V-8 1997 350 MAGNUM EFI/MP TOURN SKI - 350 MAG MPI SKI GM 350 V-8 1995-1996
200/5.0L/LX 260/5.7L 350 MAG ALPHA/BRAVO - 200 (2 BBL.) GM 305 V-8 1987 454/502 EFI MAG BRAVO (GEN V) - 454 EFI (GEN. V) GM 454 V-8 1994-1996
500 HP 8.2L (502 CI) ENGINE - 500 (GEN. V) GM 502 V-8 1994-1995 500 CARB (502CID) 8.2L ENGINE (GEN +) - 500 (GEN. +) GM 502 V-8 1999
5.7L INBOARD ENGINE - 5.7L MIE GM 350 V-8 1994-1995 5.0L EFI ALPHA/BRAVO 5.7L EFI ALPHA/BRAVO (GEN +) ENGINE - 5.7L EFI GM 350 V-8 1998
330 ENGINE (G.M.) - 330 GM 454 V-8 1977-1981 898/200/228/230/260 HP R/MR/ALPHA ONE - 898 (2 BBL.) GM 305 V-8 1983-1984
4.3L/LX ALPHA/BRAVO (GEN II) - 4.3L (GEN II) (2 BBL.) GM 262 V-6 1996 7.4L EFI (MIE) HURTH/BORG WARNER (GEN VI) - 7.4L TBI MIE (LH) GEN. VI GM 454 V-8 1996-1997
357 MAG BRAVO 4V/357 ALPHA 4V/383 MAG BRAVO 4V - 383 Mag Bravo 4V 500 BULLDOG - 500 Bulldog
SCORPION 377 - Scorpion 377 350 MAG TOURNAMENT SKI (CARB) - 350 MAG (SKI) GM 350 V-8 1991-1996
350/6.2L MAG MPI (MIE) (GEN+) - MX 6.2L MPI MIE 5.7 LITRE COMPETITION SKI ENGINE - 5.7L (SKI) GM 350 V-8 1985-1987
200/5.0L/LX 260/5.7L 350 MAG ALPHA/BRAVO - 350 MAG. ALPHA GM 350 V-8 1987-1995 454/502 MPI MAG BRAVO (GEN VI) - 502 MAG. MPI (GEN VI) GM 502 V-8 1996
350 MAG MPI BRAVO - 350 MAG. BRAVO MPI(GEN+) GM 350 V-8 1997 350 MAG EFI TOURN SKI - 350 MAG. EFI SKI (TBI) GM 350 V-8 1994-1996
270 ENGINE - 270 (2 BBL.) GM 350 V-8 1969-1972 4.3L ALPHA/BRAVO (262 CID - GEN +) - 4.3LH (GEN +) (4 BBL.) GM 262 V-6 1998
350/6.2L BLACK SCORPION SKI (GEN+) - BLACK SCORPION 350 MAG SKI (GEN+) V-8 1997-2001 454 MAG MPI HORIZON AND 8.2L MIE MPI - 454 MAG. MPI HORIZON (GEN. VI) GM 454 V-8
370/400/440/460 CYCLONE TRS ENGINE - 370 TRS GM 454 V-8 1978-1985 8.2L W/HURTH INBOARD GEN V - 8.2L MIE GEN. V GM 502 V-8 1993-1996
HP 500 (502 CID) - 500 (GEN. V) GM 502 V-8 1996 525 HP ENGINE - 525 SC (GEN. V) GM 454 V-8 1992-1995
454 MAGNUM BRAVO ENGINE - 454 MAG. BRAVO GM 454 V-8 1988-1992 5.7L 2BBL COMP SKI ENGINE - 5.7L COMPETITION SKI GM 350 V-8 1996
350 MAGNUM ALPHA (EFI-TBI) - 5.7LX BRAVO EFI (GEN+) GM 350 V-8 1996 5.7L COMPETITION SKI ENGINE - 5.7L COMPETITION SKI GM 350 V-8 1987-1995
5.7L/LX 2BBL AND 4BBL TBI ALPHA/BRAVO - 5.7LX EFI (4 BBL.-TBI) GM 350 V-8 1997 280 ENGINE - 280 TRS GM 350 V-8 1975-1976
EXHAUST/COOLING SYSTEMS AND EXTENSION KITS - Exhaust / Cooling Systems and Extension Kits 7.4L TRANSMISSION W/HURTH (G.M.) - 7.4L MIE W/HURTH GM 454 V-8 1989-1992
MERC 100/150/200/250 - 100, 150, 200, 250 357 MAG BRAVO 4V/357 ALPHA 4V/383 MAG BRAVO 4V - 357 Alpha 4V
MIE 7.4L HURTH/BORG WARNER (GEN IV) - 7.4L MIE (LH) GEN. VI GM 454 V-8 1996-1997 470 ENGINE - 470 (2 BBL.) MERCURY 224 I/L4 1980-1982
5.7LX TBI BRAV0 350 TBI MAG ALPHA (EFI) - 5.7L EFI (GEN+) REPOWER PLUS GM 350 V-8 MIE 454 MAG MPI SKI (GEN VI) - 454 MAG. MPI (SKI) GEN. VI GM 454 V-8 1996-1997
800 SC ENGINE - 800 SC (GEN. V) GM 572 V-8 1993-1998 330 HP ENGINE W/BORG WARNER - 330 GM 454 V-8 1982-1987
900 SC - DRY SUMP - 900 SC Dry Sump 2000 225 ENGINE - 225-S (4 BBL.)FORD 302 V-8 1973-1974
4.3 LX/LXH ALPHA AND BRAVO (GEN +) - 4.3LX (GEN +) (2 BBL.) GM 262 V-6 1996-1997 600 SCI - 600 SCi
700 SCI - 700 SCi MERC 200 - 200
230 HP/5.0L 260 HP/5.7L ENGINE - 260 MIE GM 350 V-8 1987 502 MAGNUM BRAVO ENGINE (GEN V) - 502 MAG. BRAVO (GEN. V) GM 502 V-8 1992-1993
7.4 LX (EFI-TBI) BRAVO (GEN VI) - 7.4LX BRAVO (TBI)(GEN. VI) GM 454 V-8 1996-1997 330 ENGINE (G.M.) - 330 MIE GM 454 V-8 1977-1980
350/6.2L MAG MPI (MIE) (GEN+) - 350 MAG MPI HORIZON MIE 525 SC - GEN VI - 525 SC - Gen VI
7.4L/8.2L MPI (MIE) GEN VI - 8.2L MIE MPI (LH) GEN. VI GM 502 V-8 1996-1997 7.4L/8.2L MPI (MIE) GEN VI - 8.2L MIE MPI (LH) GEN. VI GM 502 V-8 1996-1997
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