6E5-11111-10-1S 6E5-11191-01-1S 6G5-12413-00-1S Yamaha Cylinder Head, Cover & Thermo | Genuine Used Part

🔧 Product Description

Genuine Yamaha 115HP Cylinder Head, Water-Jacket Cover and Thermostat Cover Assembly - Part Numbers: 6E5-11111-10-1S, 6E5-11191-01-1S & 6G5-12413-00-1S

A genuine used Yamaha cylinder-head assembly for selected 115HP V4 two-stroke outboard motors.

This assembly includes the 115HP cylinder head, matching outer water-jacket cover and thermostat cover. The head closes one bank of two cylinders, forms the combustion chambers and contains the cooling passages used to regulate cylinder and combustion-chamber temperature.

⚙️ Key Features

• Genuine used Yamaha 115HP cylinder-head assembly
• Includes cylinder head 6E5-11111-10-1S
• Includes cylinder-head water-jacket cover 6E5-11191-01-1S
• Includes thermostat cover 6G5-12413-00-1S
• One assembly required for each cylinder bank

🚤 Compatibility

Commonly used on

• Yamaha 115HP V4 two-stroke cylinder banks
• Carburetted V4 cooling and combustion assemblies

Typically suits

• Engine models:
• Yamaha 115ETJ - 1986
• Yamaha 115ETH - 1987
• Yamaha 115ETLH / 115ETXH - 1987
• Yamaha 115ETG / 115ETLG - 1988
• Yamaha 115CETO
• Yamaha 115BET
• Yamaha 115TLR
• Yamaha 115TLRV
• Yamaha 115TLRW
• Yamaha 115TLRY
• Yamaha 115TLRZ
• Yamaha 115TXRA
• Yamaha 115TLRB
• Yamaha S115 saltwater-series applications using head 6E5-11111-10-1S
• HP Range: 115HP
• Engine Type: Yamaha carburetted 90-degree V4 two-stroke outboard
• Year Range: Approximately 1986-2003

🔌 Function

The cylinder head seals one bank of cylinders and forms the combustion chambers. Cooling water circulates through the head and beneath the outer cover before passing through the thermostat-controlled cooling circuit.

⚠️ Common Signs of Failure

• Low compression on one cylinder bank
• Combustion leakage past the head gasket
• Cylinder head is warped after overheating
• Cooling water leaks around the outer cover
• Internal water passages are corroded or restricted
• Spark-plug threads are damaged
• Thermostat cover leaks or is heavily corroded
• Water enters a combustion chamber

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6E5-11111-10-1S → Supersedes painted reference 6E5-11111-10-94
• 6E5-11191-01-1S → Supersedes painted reference 6E5-11191-01-9M
• 6G5-12413-00-1S → Supersedes painted reference 6G5-12413-00-9M

OEM / Related Numbers

• 6E5-11111-10-1S
• 6E511111101S
• 6E5-11111-10-94
• 6E5-11191-01-1S
• 6E511191011S
• 6E5-11191-01-9M
• 6G5-12413-00-1S
• 6G512413001S
• 6G5-12413-00-9M
• 6E5-11181-A2 cylinder-head gasket
• 90119-08M07 cylinder-head bolt
• 90119-08MA8 related later head bolt
• 688-12414-00 thermostat-cover gasket
• 6E5-12411-30 thermostat

Aftermarket / Verified Equivalents

• Recmar: REC6E5-11181-A2 - cylinder-head gasket
• Sierra: 18-3846 - thermostat
• Recmar: REC6E5-12411-30 - thermostat
• No aftermarket equivalent for the complete cylinder-head assembly

📦 Condition

• Genuine used part
• Supplied with cylinder head, water-jacket cover and thermostat cover
• Removed from running engine where applicable
• In good working condition unless otherwise stated