881310T08 Mercury Cylinder Head & Components | Genuine Used Part

🔧 Product Description

Genuine Mercury 115HP EFI Four-Stroke Cylinder Head Assembly - Part Number: 881310T08

A genuine used Mercury Marine cylinder-head assembly for selected 115HP EFI four-stroke outboard motors using the Yamaha-derived inline four-cylinder powerhead.

The head contains the combustion chambers, intake and exhaust ports, valve guides, camshaft supports, spark-plug locations and internal lubrication and cooling passages.

⚙️ Key Features

• Genuine used Mercury 115HP EFI cylinder head
• Current reference 881310T08
• Supersedes earlier cylinder head 881310T2
• Yamaha-derived inline four-cylinder four-stroke design
• Supplied with the fitted components shown or stated in the product listing

🚤 Compatibility

Commonly used on

• Mercury and Mariner 115HP EFI four-stroke powerheads
• Yamaha-derived 1.7-litre inline four-cylinder engines

Typically suits

• Engine models:
• Mercury 115 EFI four-stroke - serial 0T178500 through 0T800999
• Mercury 115 EFI four-stroke - serial 0T801000 through 1B226999
• Mercury 115 EFI four-stroke - serial 1B227000 through 1B366822
• Mariner 115 EFI four-stroke equivalent models
• 2001 Mercury / Mariner 115 EFI ELPT four-stroke
• HP Range: 115HP
• Engine Type: Mercury / Mariner inline four-cylinder EFI four-stroke outboard
• Year Range: Approximately 2001-2006

🔌 Function

The cylinder head controls airflow into and exhaust flow out of the cylinders while sealing the combustion chambers and supporting the camshafts and valve train.

⚠️ Common Signs of Failure

• Low compression on one or more cylinders
• Burned or leaking valves
• Head is warped after overheating
• Camshaft journals are scored
• Cooling water enters a combustion chamber
• Oil and coolant passages leak
• Spark-plug threads are damaged
• Valve guides or seats require repair
• Cylinder-head gasket repeatedly fails

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 881310T08 → Supersedes 881310T2
• 881310T2 earlier OEM cylinder-head reference

OEM / Related Numbers

• 881310T08
• 881310T8
• 881310T2
• 17-804110 valve-guide / locating component
• 23-8M0070515 cylinder-head dowel pin
• 27-804123001 cylinder-head cover gasket
• 881312 related cylinder-head cover
• 804115 related valve component
• 804117 related valve spring
• 804118 related valve retainer
• 804119 related valve cotter

Aftermarket / Verified Equivalents

• Aftermarket top-end gasket sets for Yamaha-derived Mercury 115HP four-stroke engines
• No aftermarket equivalent for the complete cylinder-head casting

📦 Condition

• Genuine used part
• Supplied with components shown or specifically stated
• Removed from running engine where applicable
• In good working condition unless otherwise stated