Exhaust Valve

The Yanmar Exhaust Valve (OEM 114250-11113) is a replacement engine valve designed for compatible Yanmar L-Series diesel engines. Fitted within the cylinder head, the exhaust valve controls the release of combustion gases from the cylinder during the exhaust cycle, opening and closing in precise sequence with the engine's valve train.

Designed to operate within the demanding environment of a diesel engine cylinder head, the valve is subjected to high temperatures, combustion pressure and repeated mechanical loading. Replacing a worn, damaged or poorly sealing exhaust valve helps restore effective gas flow, maintain cylinder compression and support reliable engine performance.

FUNCTION AND OPERATION

• Controls the release of combustion gases from the engine cylinder
• Opens and closes in synchronisation with the engine valve train
• Seals against the valve seat when closed
• Helps maintain cylinder compression
• Supports efficient exhaust gas flow and engine performance
• Replacement for a worn, damaged or poorly sealing original valve

TECHNICAL DETAILS

• OEM Number: 114250-11113
• Manufacturer: Yanmar
• Component: Exhaust valve
• Application: Selected Yanmar L-Series diesel engines
• Location: Cylinder head
• Length: 69.5mm
• Shaft Diameter: 5.5mm
• Valve Diameter: 22mm
• Fits: Some L48 Models

TYPICAL APPLICATIONS

• Yanmar L40AE engines
• Yanmar L40AE-S engines
• Yanmar L48AE engines
• Yanmar L48N-S mixer engines
• Compatible L-Series construction and industrial equipment
• Other equipment using the 114250-11113 exhaust valve

IMPORTANT INFORMATION

When replacing an exhaust valve, the valve seat, valve guide, valve stem seal and associated valve-train components should be inspected for wear or damage. Correct seating between the valve and valve seat is essential for maintaining cylinder compression and preventing combustion gases from escaping past the valve.

Always confirm the engine model and serial number before ordering, as valve specifications can vary between Yanmar engine variants. The valve should be installed as part of a correctly inspected and serviced cylinder-head assembly.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£30.00 for delivery before 10:30am
£25.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.