This is a genuine Mercury Marine Quicksilver factory OEM part, not aftermarket
The Mercury / MerCruiser 25-48171 O-Ring is a small OEM sealing ring used in various fuel, cooling, and engine system applications on Mercury outboards and MerCruiser sterndrives.
This is a small OEM rubber sealing O-ring used throughout Mercury engines to prevent fuel or fluid leaks at connection points, especially where housings or fittings are joined.
Material: durable marine-grade rubber designed to resist fuel, oil, and heat exposure
Size specification: approximately 0.364" inner diameter × 0.070" cross-section
Function: provides a tight fluid and pressure seal between engine components
Applications: used in multiple Mercury/MerCruiser systems including:
Fuel system fittings Cooling system passages Trim/tilt and accessory assemblies Various small engine sealing points
Compatible Engines & Serial Number Ranges
45 (4 CYL.) - 0A719281 & Up 45 (4 CYL.) - 0B110789 & Up 45 (4 CYL.) - 9466692 & Up 45 (4 CYL.) - 5531630 THRU 0B110788 45 (4 CYL.) - 7143688 THRU 0A719280 45 (4 CYL.) - 8063985 & Up 45 (4 CYL.) - 9248006 THRU 9466691 50 (3 CYL.) - 6428681 THRU 0B122929 50 (3 CYL.) - 7208333 THRU 0A721307 50 (3 CYL.) - 9385911 THRU 9469199 50 (4 CYL.) - 5531630 & Up 50 (4 CYL.) - 7143688 & Up 50 (4 CYL.) - 8063985 & Up 50 (4 CYL.) - 9248006 & Up 60 (3 CYL.) - 6428681 THRU 0B122929 60 (3 CYL.) - 7208333 THRU 0A721307 60 (3 CYL.) - 9385911 THRU 9469199 70 - 5702220 THRU 6428680 70 - 7177688 THRU 7208332 70 (3 CYL.) - 5579017 THRU 6428680 70 (3 CYL.) - 7145938 THRU 7208332 70 (3 CYL.) - 8065065 & Up 70 (3 CYL.) - 9255131 THRU 9385910 80 - 5763341 THRU 6432900 80 - 7162528 THRU 7208572 80 - 8066915 AND UP 800 (4 CYL. ), 80 (4 CYL.) - 5582562 THRU 6432900 800 (4 CYL. ), 80 (4 CYL.) - 7146213 THRU 7208572 800 (4 CYL. ), 80 (4 CYL.) - 8067015 & Up 800 (4 CYL. ), 80 (4 CYL.) - 9256131 THRU 9393855 90 (6 CYL.) - 5721325 THRU 6436122 90 (6 CYL.) - 7190903 THRU 7208847 90 (6 CYL.) - 5594657 THRU 6436122 90 (6 CYL.) - 7147088 THRU 7208847 90 (6 CYL.) - 8071020 AND UP V-150 - 4868998 THRU 0A904645 V-150 - 5600162 THRU 0A904645 V-150 Magnum - 5600162 THRU 0A904645 V-150 Marathon - 5600162 THRU 0A904645 V-150 Work - 4868998 THRU 0A904645 V-1500 - 4868998 THRU 0A904645 V-1500 - 5600162 THRU 0A904645 V-150-XR-2 - 4868998 THRU 0A904645 V-175 - 4301235 THRU 0C100860 V-175 - 8058870 & Up V-200 - 5624878 THRU 0C100860 V-225 - 5628028 AND UP 150/200 EFI PRO MAX/SUPER MAG - 0G610050 THRU 0G856999 2.5L (EFI)/(EFI-OFFSHORE) - 0G857000 THRU 0T999519 200 EFI PRO MAX/SUPER MAG - 0G857000 THRU 0G858150 200XS DFI (2.5L) - 0T235000 THRU 0T818180 200XS DFI (2.5L) - 0T818181 THRU 1E000796 225 EFI PRO MAX/SUPER MAG - 0G610104 THRU 0G856999 225 EFI PRO MAX/SUPER MAG - 0G857000 THRU 0T429939 225X EFI PROMAX - 0T430254 THRU 0T819605 250XS (3.0L DFI) - 0T651945 THRU 0T818042 250XS (3.0L DFI) - 0T818043 THRU 0T997973 300 (3.0L EFI) ProMax - 0G610221 THRU 0T105297 300 (3.0L EFI) SuperMagnum - 0G610221 THRU 0T105297 300X (3.0L EFI) PRO MAX - 0T429940 THRU 0T999587 300X (3.0L EFI) PRO MAX - 0T235084 THRU 0T429939 MERC 3.4 (EFI) - 0A953707 THRU 0A953736 MERC 3.4 (EFI) - 82H1008 THRU 85E1092 MERC FORMULA I (2L EFI) - 82E606 THRU 86G640 MERC FORMULA I (CARB) - 77J603 AND UP MERC MOD-VP - 0B290000 AND UP MERC MOD-VP - 83B807 AND UP MERC MOD-VP (EFI) - 0C276380 AND UP MERC XR2 - 0B290314 THRU 0C276429 MERC/MAR 2.4L (CARB) - 0C175045 AND UP MERC/MAR 2.4L (EFI) - 0A168043 AND BELOW MERC/MAR 2.4L (EFI) - 0A168044 THRU 0B290009 MERC/MAR 2.4L (EFI) - 0B290010 THRU 0C276917 MERC/MAR 2.5L (CARB) - 0D030200 THRU 0D935270 MERC/MAR 2.5L (CARB) - 0D935271 AND UP MERC/MAR 2.5L (EFI) - 0D030200 THRU 0D935270 MERC/MAR 2.5L (EFI) - 0D935271 THRU 0G366999 MERC/MAR 2.5L (EFI) - 0G367000 THRU 0G610238 MERC/MAR 2.5L (EFI)/(EFI-OFFSHORE) - 0G367000 THRU 0G610238 MERC/MAR 2.5L (EFI)/(EFI-OFFSHORE) - 0G610239 THRU 0G856999 MERC/MAR XR2/MAGNUM - 0C276430 THRU 0D935270 MERC/MAR XR2/MAGNUM - 0D935271 AND UP 120/140 1978-1982 - 4893635 THRU 6225576 165 1978-1981 - 4890460 & Up 228 1978-1982 - 4898730 THRU 6225576 260 1978-1982 - 4898730 THRU 6225576 470 1978-1982 - 4893835 THRU 6225576 485 1980-1982 - 4893835 & Up 898 1978-1982 - 4898730 THRU 6225576 ALPHA ONE (GEN. II) 1991-1995 - 0D469859 THRU 0F679999 ALPHA ONE (GEN.II) 1996-1997 - 0F680000 THRU 0K999999 ALPHA ONE (GEN.II) 1998 AND UP - 0L100040 & Up BLACKHAWK 1994-1995 - ALL BRAVO 0M100001 THRU 0W249999 BRAVO ONE - 0W250000 & Up BRAVO DRIVES - 0B664190 THRU 0F729999 BRAVO STERNDRIVES - 0F730000 THRU 0M100000 BRAVO THREE - 0M100001 THRU 0W249999 BRAVO THREE - 0W250000 & Up BRAVO THREE - 0B664190 THRU 0F729999 BRAVO THREE - 0F730000 THRU 0M100000 BRAVO TWO - 0M100001 THRU 0W249999 BRAVO TWO - 0W250000 & Up BRAVO TWO - 0B664190 THRU 0F729999 BRAVO TWO - 0F730000 THRU 0M100000 BRAVO X ONE - 0M100001 THRU 0W249999 BRAVO X ONE - 0W250000 & Up BRAVO X THREE - 0M100001 THRU 0W249999 BRAVO X THREE - 0W250000 & Up BRAVO X TWO - 0M100001 THRU 0W249999 BRAVO X TWO - 0W250000 & Up BRAVO XR ONE - 0W240000 & Up BRAVO XR ONE - 0L914990 THRU 0W239999 BRAVO XR SPORTMASTER - 0M906878 & Up BRAVO XR SPORTMASTER - 0M052945 THRU 0M906877 BRAVO XR THREE - 0W240000 & Up BRAVO XZ ONE - 0L914990 THRU 0M999999 HI PERFORMANCE TRANSOM - 0W150003 & Up INTEGRATED TRANSOM - 0M052768 & Up INTEGRATED TRANSOM - ALL THRU 0M052767 ALPHA ONE SS 1986-1989 - ALL THRU none SSM II/III/IV/V 1982-1995 - ALL THRU none TR/TRS 1977-1993 - 4794900 & Up VAZER DRIVE - 0W995000 & Up VAZER TRANSOM - 0W755000 & Up Electrical - OB VOL. 1 (1986 THRU 1993) Electrical - OB MISC. (1985 AND BELOW) Exhaust / Cooling Systems and Extension Kits - MERCRUISER VOL. 1 (1986 THRU 1993) Exhaust / Cooling Systems and Extension Kits - OB VOL. 1 (1986 THRU 1993) Exhaust / Cooling Systems and Extension Kits - OB MISC. (1985 AND BELOW) Fuel/Oil Tanks, Lines, Filter Kits and Corrosion - MERCRUISER VOL. 1 (1986 THRU 1993) Fuel/Oil Tanks, Lines, Filter Kits and Corrosion - OB VOL. 1 (1986 THRU 1993) Fuel/Oil Tanks, Lines, Filter Kits and Corrosion - 1994 & Up Instruments-Gauges and Components - OB MISC. (1985 AND BELOW) Outboard Joystick Piloting - All & Up Steering Systems and Components - 1994 & Up Trim / Tilt / Lift Systems and Components - OB VOL. 1 (1986 THRU 1993) Trim / Tilt / Lift Systems and Components - OB MISC. (1985 AND BELOW) Trim / Tilt / Lift Systems and Components - 1994 & Up 115 (6 CYL.) - 5738891 THRU 6436122 115 (6 CYL.) - 7191308 THRU 7208847 115 (6 CYL.) - 5600967 THRU 6436122 115 (6 CYL.) - 7147988 THRU 7208847 115 (6 CYL.) - 8067340 AND UP 140 - 5625108 AND UP 140 - 7150413 AND UP 140 - 8066065 AND UP 200 PRO VERADO (4-STROKE)(6 CYL.) - 2B034840 THRU 2B144122 200 PRO VERADO (4-Stroke)(6 CYL.) - 2B144123 & Up 200 VERADO (4-STROKE)(6 CYL.) - 0P520553 THRU 2B144122 200 VERADO (4-STROKE)(6 CYL.) - 1B517434 THRU 2B144122 200 VERADO (4-STROKE)(6 CYL.) - 2B144123 & Up 225 VERADO (4-STROKE)(6 CYL.) - 0P520553 THRU 2B144122 225 VERADO (4-STROKE)(6 CYL.) - 1B517434 THRU 2B144122 225 VERADO (4-STROKE)(6 CYL.) - 2B144123 & Up 250 PRO VERADO (4-STROKE)(6 CYL.) - 1B830170 THRU 2B144122 250 PRO VERADO (4-Stroke)(6 CYL.) - 2B144123 & Up 250 VERADO (4-STROKE)(6 CYL.) - 0P520553 THRU 2B144122 250 VERADO (4-STROKE)(6 CYL.) - 1B517434 THRU 2B144122 250 VERADO (4-STROKE)(6 CYL.) - 2B144123 & Up 250/275 - 0C101891 AND UP 275 VERADO (4-STROKE)(6 CYL.) - 0P520553 THRU 2B144122 275 VERADO (4-STROKE)(6 CYL.) - 1B517434 THRU 2B144122 275 VERADO (4-STROKE)(6 CYL.) - 2B144123 & Up 300 (3.4 LITRE) - 5611648 & Up 300 PRO VERADO (4-STROKE)(6 CYL.) - 1B830170 THRU 2B144122 300 PRO VERADO (4-Stroke)(6 CYL.) - 2B144123 & Up 300 VERADO (4-STROKE)(6 CYL.) - 0P520553 THRU 2B144122 300 VERADO (4-STROKE)(6 CYL.) - 1B517434 THRU 2B144122 300 VERADO (4-STROKE)(6 CYL.) - 2B144123 & Up 35 (2 CYL.) - 209608 & Up 35 (2 CYL.) - 6445653 THRU 0B110788 35 (2 CYL.) - 9384476 & Up 350 PRO VERADO (4-Stroke)(6 CYL.) - 2B141124 & Up 350 VERADO (4-Stroke)(6 CYL.) - 2B141617 & Up 39 (1 CYL.) - 1655013 THRU 2498135 40 (1 CYL.) - 2498136 THRU 3296136 400 VERADO (4-Stroke)(6 CYL.) - 2B141124 & Up
This is in new condition please see pictures for the exact item you will receive.