Piston Ring Set .015 Oversize Compatible With 1972-1990 Mercury Mariner 35Hp-70Hp 2-Cyl 3-Cyl

OEM CROSS-REFERENCE PART NUMBERS:
• 39-78816A12 (Standard)
• 39-78811A12 (.015 Oversize)
• 39-88392A12 (.030 Oversize)
• 39-45155A12 (Superseded)
• 39-45204A12 (Superseded)
• 39-788164A12

SPECIFICATIONS:
• Type: Piston Ring Set (3-Ring Configuration)
• Oversize: .015 Over • Standard Bore: 2.875" • Finished Bore: 2.890"
• Engine Type: 2-Stroke Crossflow Outboard
• Horsepower Range: 35HP-150HP
• Cylinder Configurations: 2-Cyl, 3-Cyl, V6 6-Cyl
• Ring Quantity: Per Cylinder

COMPATIBILITY:
• 1984-1989 Mercury/Mariner 35HP 2-Cyl Crossflow
• 1972-1983 Mercury/Mariner 40HP 2-Cyl Crossflow
• 1984-1990 Mercury/Mariner 50-60HP 3-Cyl Crossflow
• 1973-1983 Mercury/Mariner 65-70HP 3-Cyl Crossflow
• 1984-1988 Mercury/Mariner 115HP V6 Crossflow
• 1978-1981 Mercury/Mariner 140HP V6 Crossflow
• 1973-1978 Mercury/Mariner 150HP V6 CrossflowPRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
MERCURY/MARINER CROSSFLOW 2-STROKE OUTBOARD ENGINES (1972-1990):

2-CYLINDER MODELS:
• 35HP 2-Cyl Crossflow (1984-1989)
• 40HP 2-Cyl Crossflow (1972-1983)

3-CYLINDER MODELS:
• 50HP 3-Cyl Crossflow (1984-1990)
• 60HP 3-Cyl Crossflow (1984-1990)
• 65HP 3-Cyl Crossflow (1973-1976)
• 70HP 3-Cyl Crossflow (1977-1983)

6-CYLINDER MODELS:
• 115HP V6 Crossflow (1984-1988)
• 140HP V6 Crossflow (1978-1981)
• 150HP V6 Crossflow (1973-1978)

ENGINE SPECIFICATIONS:
• Standard Bore: 2.875"
• Piston Type: 3-Ring Configuration
• Engine Type: 2-Stroke Crossflow Outboard
• Cylinder Configurations: 2-Cyl, 3-Cyl, and V6 6-Cyl

NOTES:
• Ring set is for ONE cylinder — order quantity matching your cylinder count
• 2-Cyl models need 2 sets, 3-Cyl models need 3 sets, V6 models need 6 sets
• Fits 3-ring piston configuration only — verify your piston ring count before ordering
• OEM part numbers: 39-78816A12, 39-78811A12, 39-88392A12
• Verify OEM part number before ordering