New Marine Quicksilver Service O-Ring Compatible With 1994-2018 Mercury V6 Outboard 75Hp-400Hp

WATER PUMP / IMPELLER KIT O-RING — MERCURY V6 OUTBOARDS (1994-2018):

VERADO 6-CYLINDER OUTBOARD APPLICATIONS:
• Mercury Verado 6-Cyl 350 HP 3.2283 Bore Supercharged 4-Stroke (2009-2014)
• Mercury Verado 6-Cyl 400 HP 3.2283 Bore Supercharged 4-Stroke (2015-2018)
• Mercury Verado 15 Spline 135 HP (2007-2010)
• Mercury Verado 15 Spline 275 HP (2005-2010)

MERCURY 2.5L (3.501 BORE) V6 OUTBOARD APPLICATIONS:
• Mercury 6-Cyl 2.5L EFI 150 HP 3.501 Bore 2-Stroke (2006-2010)
• Mercury 6-Cyl 2.5L EFI 200 HP 3.501 Bore 2-Stroke (2006)
• Mercury 6-Cyl 2.5L Jet 110 HP 3.501 Bore 2-Stroke (2006-2013)
• Mercury 6-Cyl 2.5L OptiMax 135 HP 3.501 Bore (2007-2012)
• Mercury 6-Cyl 2.5L OptiMax 150 HP 3.501 Bore (2007-2014)
• Mercury 6-Cyl 2.5L OptiMax 175 HP 3.501 Bore (2007-2014)
• Mercury 6-Cyl 2.5L Sport Jet 200 HP 3.501 Bore (2001-2006)
• Mercury 6-Cyl 2.5L Sport Jet 210 HP 3.501 Bore (2000-2005)
• Mercury 6-Cyl 2.5L Sport Jet 240 HP 3.501 Bore (2000-2006)
• Mercury 6-Cyl 2.5L Pro XS 150 HP 3.6265 Bore (2010-2018)
• Mercury 6-Cyl 2.5L Pro XS 175 HP 3.6265 Bore (2008-2018)

MERCURY 3.0L (3.625 / 3.6265 BORE) V6 OUTBOARD APPLICATIONS:
• Mercury 6-Cyl 3L 225 HP 3.625 Bore Carb 2-Stroke (1994-2001)
• Mercury 6-Cyl 3L Carb Sea Pro 225 HP 2-Stroke (1995-2001)
• Mercury 6-Cyl 3L EFI 200 HP 3.625 Bore (2002-2008)
• Mercury 6-Cyl 3L EFI 225 HP 3.625 Bore (1995-2008)
• Mercury 6-Cyl 3L EFI 250 HP 3.625 Bore (1995-2008)
• Mercury 6-Cyl 3L Pro Max 300 HP 3.625 Bore (1998-2005)
• Mercury 6-Cyl 3L XB 250 HP 3.625 Bore (2000-2004)
• Mercury 6-Cyl 3L OptiMax 200 HP 3.6265 Bore (1997-2018)
• Mercury 6-Cyl 3L OptiMax 225 HP 3.6265 Bore (1998-2018)
• Mercury 6-Cyl 3L OptiMax 250 HP 3.6265 Bore (2003-2014)
• Mercury 6-Cyl 3L OptiMax 300 HP 3.6265 Bore (2015-2018)
• Mercury 6-Cyl 3L Pro XS 200 HP 3.6265 Bore (2007-2018)
• Mercury 6-Cyl 3L Pro XS 225 HP 3.6265 Bore (2004-2018)
• Mercury 6-Cyl 3L Pro XS 250 HP 3.6265 Bore (2006-2018)
• Mercury 6-Cyl 3L Sport Jet 250 HP 3.6265 Bore (2002-2006)
• Mercury 6-Cyl 3.2L XS 300 HP 3.6265 Bore (2006-2017)

MERCURY V6 4-STROKE OUTBOARD APPLICATIONS:
• Mercury 6-Cyl 4-Stroke 200 HP Outboard (2005-2014)
• Mercury 6-Cyl 4-Stroke 225 HP Outboard (2005-2014)
• Mercury 6-Cyl 4-Stroke 250 HP Outboard (2005-2014)
• Mercury 6-Cyl 4-Stroke 275 HP Outboard (2005-2010)
• Mercury 6-Cyl 4-Stroke 300 HP Outboard (2007-2014)

OMC I/O APPLICATIONS:
• All OMC I/O Models Requiring Part Number 526-30 by OEM Match

O-RING SPECIFICATIONS:
• Inside Diameter: 0.796 Inch
• Width / Cross-Section: 0.139 Inch (X-Long Profile)
• Material: Nitrile (NBR) Standard Marine Grade Rubber
• Color: Black
• Type: Water Pump / Impeller Kit O-Ring (X-Long)

FUNCTIONAL APPLICATION — IMPELLER KIT WATER PUMP O-RING:
Per Mercury Marine documentation, this O-ring is part of Sierra Impeller Repair Kit 18-3214 — a routinely-replaced wear part during water pump impeller service. Used at the water pump assembly sealing position across virtually the entire Mercury V6 outboard lineup from 1994-2018, including the EFI, OptiMax, Pro XS, Pro Max, XB, Sport Jet, Sea Pro, and Verado families. Quicksilver also packages this O-ring as 8M0005958 in 5-packs for service use across Mercury outboards 75-400 HP, Verado L4 and L6, ProXs and SeaPro models.

SERVICE WHEN:
• Replacing Water Pump Impeller (Routine Annual Service)
• Performing Lower Unit / Gearcase Service
• Diagnosing Cooling System Issues
• Annual Maintenance on Mercury V6 Outboards
• Rebuilding Water Pump Assembly
• Part of Standard Impeller Repair Kit Service

FITMENT NOTE:
This is an OEM-spec replacement Water Pump / Impeller Kit O-Ring. ALWAYS verify the OEM part number from your Mercury service manual or parts diagram before ordering. Compatible with virtually the entire Mercury V6 outboard lineup from 1994-2018 (2.5L, 3.0L, 3.2L, 3.2283 Verado), V6 4-Stroke (2005-2014), Verado L4 4-cyl, plus OMC I/O applications by OEM part number match. Routine wear part replaced during impeller service — order in quantity for service kits.