Mercury 175HP OptiMax 3-Cylinder Port Cylinder Head Assembly | OEM 878109

Used Mercury 175HP OptiMax 3-Cylinder Port Cylinder Head Assembly, OEM Part Number 878109 / 878109T1. This genuine Mercury marine engine component is designed for use with compatible Mercury OptiMax two-stroke outboard motors.

The cylinder head is in used condition and appears complete as pictured, including the spark plugs, temperature sensor, and mounting studs. Functional condition has not been tested.

Highlights

• Genuine Mercury OEM Cylinder Head

• Mercury 175HP OptiMax Application

• 3-Cylinder Port Side Configuration

• OEM Part Number 878109 / 878109T1

• Direct Fuel Injection (DFI) Engine Application

• Includes Spark Plugs

• Temperature Sensor Included

• Mounting Studs Included

• Original Black Finish

• Replacement Engine Component

• Used OEM Part

• Compatibility Must Be Verified Before Purchase

• Sold Exactly as Pictured

Condition

Used condition with normal cosmetic wear consistent with age and previous marine use, including scratches, scuffs, paint wear, surface corrosion, and carbon buildup in the combustion chambers.

The cylinder head appears structurally complete in the provided photos. However, the head has not been pressure tested, checked for warpage, or inspected internally for hidden damage.

Please review all photos carefully for exact condition and included components.

Professional inspection and installation are recommended. All mating surfaces, threads, and sealing areas should be inspected before installation.

Specifications

Make: Mercury Marine

Engine Model: OptiMax 175HP

Part Type: Cylinder Head Assembly

Configuration: 3-Cylinder Port Side

Engine Type: Two-Stroke DFI Outboard

OEM Part Number: 878109 / 878109T1 (Verify)

Material: Metal Alloy

Finish: Black

Spark Plugs: Included as Pictured

Temperature Sensor: Included as Pictured

Mounting Studs: Included as Pictured

Condition: Used – Untested

Fitment: Buyer Must Verify Compatibility Using Engine Serial Number and OEM Part Number

Dealer Sale – Sunset Marine TX LLC

SKU: 11091