Exhaust Valve Spindles for 2-Stroke Marine Engines
Replacement exhaust valve spindles for MC, MC-C, ME-B, ME-C, RTA, RT-flex and X-series engines
Alfa Marine Solutions supplies replacement exhaust valve spindles for 2-stroke large bore marine engines of the MC, MC-C, ME-B, ME-C, RTA, RT-flex and X series. Valve spindles we supply are available in Nimonic and Dura-type versions. We support shipowners, technical managers and ship repair yards worldwide, for planned overhauls, dry-docking and urgent deliveries to vessels in port.
Why the exhaust valve spindle matters
The exhaust valve spindle operates in one of the harshest areas of a 2-stroke engine: high exhaust gas temperatures, corrosive combustion products and constant impact on the valve seat. A worn or burnt spindle causes loss of compression, higher fuel consumption and the risk of unplanned downtime. A correctly made replacement spindle restores sealing and extends the time between exhaust valve overhauls.
Exhaust valve spindles for MC, MC-C, ME-B and ME-C engines
- MC / MC-C: L35MC, S35MC, S35MC-C, L42MC, S42MC, S46MC-C, L50MC, S50MC, S50MC-C, L60MC, S60MC, S60MC-C, L70MC, S70MC, S70MC-C
- ME-B: S35ME-B, S40ME-B, S42ME-B, S46ME-B, S50ME-B
- ME-C: S50ME-C, G50ME-C, S60ME-C, G60ME-C, S65ME-C, S70ME-C, G70ME-C
Exhaust valve spindles for RTA, RT-flex and X-series engines
- RTA: RTA48, RTA62, RTA72
- RT-flex: RT-flex48, RT-flex50, RT-flex58, RT-flex68, RT-flex82
- X-series: X62, X72, X82 (dual fuel)
Your engine type is not listed? Send us the engine type and plate/item number and we will check availability.








Nimonic and Dura-type spindles
- Nimonic spindles: nickel-based superalloy construction with high resistance to hot corrosion and high exhaust gas temperatures.
- Dura-type spindles: designed for extended time between overhauls.
[OEM parts available for selected engine types on request.]
Related 2-stroke engine spare parts
For complete exhaust valve and cylinder unit overhauls we also supply:
- Valve seats (bottom pieces) and exhaust valve housings
- CERMET piston rings for low-sulphur fuel operation
- Cylinder liners and piston crowns
- Fuel system components: ICUs, FIVA/ELFI proportional valves, fuel injectors and fuel injector nozzles
Why Alfa Marine Solutions
Our technical sales team identifies the correct spindle from the engine type and plate/item number, confirms availability quickly and delivers to the vessel or yard, whether you are planning a routine overhaul or handling an urgent breakdown.
Contact Us for Valve Spindle Inquiries
Whenever your vessel requires valve spindles, valve seats, or other critical 2-stroke main engine spare parts, send your inquiry directly to our technical team. Enjoy engine parts delivered straight to your deck!
Explore our full range of engine components:
Disclaimer:
All trademarks, brand names, and manufacturer references are used for identification purposes only. Alfa Marine Solutions is an independent supplier and is not an authorized dealer, distributor, or representative of the mentioned manufacturers.
