This 1.2mm (0.047") cylinder head gasket fits all 1991 - 2005 gasketed-head Mercury / Mariner 135, 150, 175, 200, 225 Pro Max, 260 ROS, 300 Drag, XR6, and Sportjet 175 HP 2.5 liter 2-stroke outboards.
 
Our Mercury 2.5 Liter cylinder head gasket designed and manufacured in the USA for reliability and performance! Made with the best quality Victor Reinz AFM 1.2 Material, this gasket offers exceptional benefits, including:
 
Superior Seal Performance: Ensures a tight, durable seal to prevent leaks under high pressure.
Heat Resistance: Engineered to withstand extreme temperatures for enhanced durability.
Corrosion Resistance: Designed to combat the harsh marine environment, reducing wear and extending lifespan.
Flexibility and Strength: Accommodates thermal expansion and contraction without losing integrity.
 
Part Numbers:
18-3864, 184721, 35870, 822844, 822844T04, 822844T05, 822844004, 8228441, 8228442, 8228443, 9-63854, 9-63854, 8228441
 
Includes one (1) Mercury 1.2MM cylinder head gasket, each V6 requires two (2) if both heads are removed.
 
Head Gasket Thickness & Suggested Clearence
 
0.75mm (0.0295" thickness) is suggested for pistons at .008" (or more) below deck height
 
1.00mm (0.0393" thickness) is suggested for pistons at .000" (or more) below deck height
 
1.10mm (0.0433" thickness) is suggested for pistons at .004" (or less) over deck height
 
1.20mm (0.0472" thickness) is suggested for pistons at .009" (or less) over deck height
 
1.50MM (0.0591" thickness) is suggested for pistons at .020" (or less) over deck height
 
Racer who have explored the limits may be able to run tighter squish clearances.
 
Contact Mike Hill at mike@buckshotracing77.com or +1-714-697-1716