Gasket Kit Powerhead - Mercury / Mariner 75-85 HP 4 Cyl (1976-1986) OEM# 27-73645A32 | WSM 500-209

Gasket Kit Powerhead Mercury / Mariner 75 - 85 Hp 4 Cyl 76-86 OEM# 27-73645A32

This WSM gasket kit powerhead is a quality aftermarket replacement part designed for Mercury 4 Cyl 2.875 Bore Cross Flow 75 and 2 other compatible models.

It replaces selected OEM reference numbers including 27-73645A32, 27-73645A87, S18-4354 and is suitable for service, repair and rebuild work.

Key Features

• Quality replacement gasket designed for dependable sealing performance
• Ideal for service, repair and engine rebuild work
• Manufactured for fit, durability and reliable installation
• Compatible with 11 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 500-209
• Product: Gasket Kit Powerhead
• OEM Reference: 27-73645A32, 27-73645A87, S18-4354
• Application: Mercury 4 Cyl 2.875 Bore Cross Flow 75 and 2 other compatible models

Product Fitment

This part is suitable for the following models:

• Mercury 4 Cyl 2.875 Bore Cross Flow 75 – 1984
• Mercury 4 Cyl 2.875 Bore Cross Flow 75 – 1985
• Mercury 4 Cyl 2.875 Bore Cross Flow 75 – 1986
• Mercury 4 Cyl 2.875 Bore Cross Flow 80 – 1978
• Mercury 4 Cyl 2.875 Bore Cross Flow 80 – 1979
• Mercury 4 Cyl 2.875 Bore Cross Flow 80 – 1980
• Mercury 4 Cyl 2.875 Bore Cross Flow 80 – 1981
• Mercury 4 Cyl 2.875 Bore Cross Flow 80 – 1982
• Mercury 4 Cyl 2.875 Bore Cross Flow 80 – 1983
• Mercury 4 Cyl 2.875 Bore Cross Flow 85 – 1976
• Mercury 4 Cyl 2.875 Bore Cross Flow 85 – 1977

Why Buy WSM

WSM is a trusted manufacturer of aftermarket marine and powersports parts, known for dependable quality, strong fitment coverage and workshop-ready replacement components.

You May Also Need

Browse related parts for compatible models:

• Water Pump Impeller Force / Mercruiser / Mercury 65 - 300 Hp OEM# 18-3017 – 700-205
• Bearing Needles Force / Mercury / Mariner 35 - 150 Hp OEM# 31-62596A1 – 010-138
• Bearing Needles Force / Mercury / Mariner 35 - 150 Hp OEM# 31-62596A1 – 010-138-16
• Mounting Lock Nut Mercury / Mariner / Mercruiser 30 - 900 Hp OEM# 11-34933 – 445-222

Please use the fitment guide, OEM references and images to confirm this is the correct part before ordering.