Piston
Piston & Main Engine Components
AL-TECH INTERNATIONAL supplies high-quality Marine Engine Pistons for 2-Stroke Marine Engines used in marine propulsion systems and power plant applications. Our inventory includes a wide range of piston assemblies and related components suitable for major marine engine manufacturers such as MAN B&W, WARTSILA SULZER, and MITSUBISHI.
We maintain more than 1000 main components for 2-stroke engines in stock, enabling immediate supply and fast delivery for ship owners, ship management companies, and marine repair yards worldwide.
Main Components include Cylinder Cover, Liner, Piston Crown, Skirt, Piston Rod, Fuel Pump, Exhaust Valve Housing, Valve Spindle, Valve Seat, Cooling Water Jacket, Stuffing Box, Piston Ring, Bearing, Anti Polishing Ring, Cam Roller Assembly, Lubricator, Cam, and Plunger.
We supply New, Reconditioned, and Quality-Controlled Second-Hand components, all supported with technical inspection and dimensional measurement reports to ensure reliable performance and compliance with marine industry standards.
Compatible Engine Manufacturers
- MAN B&W
- WARTSILA SULZER
- MITSUBISHI
MAN B&W – 98MEC-98MCC-98MC – PISTON CROWN
MAN B&W – 98MEC – 98MCC – 98MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for MAN B&W…
MAN B&W – 98MEC-98MCC-98MC – PISTON ROD
MAN B&W – 98MEC – 98MCC – 98MC – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and major engine components for MAN B&W…
MAN B&W – S90MEC – K90MCC – K90MC – PISTON CROWN
MAN B&W – S90MEC – K90MCC – K90MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for MAN B&W…
MAN-B&W – K80MC-C – K80MC – S80MC – L80MC – Piston Crown
MAN B&W – K80MC-C – K80MC – S80MC – L80MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for…
MAN-B&W – K80MC-C – K80MC – S80MC – L80MC – Piston Rod
MAN B&W – K80MC-C – K80MC – S80MC – L80MC – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and major engine components for…
MAN-B&W – K80MC-C – K80MC – S80MC – L80MC – Piston Skirt
MAN B&W – K80MC-C – K80MC – S80MC – L80MC – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and major engine components for…
MAN-B&W – S70MC-C – S70MC – L70MC – Piston Crown
MAN B&W – S70MC-C – S70MC – L70MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for MAN B&W…
MAN-B&W – S70MC-C – S70MC – L70MC – Piston Skirt
MAN B&W – S70MC-C – S70MC – L70MC – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and major engine components for MAN B&W…
MAN-B&W – S60MC-C – S60MC – L60MC – Piston Crown
MAN B&W – S60MC-C – S60MC – L60MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for MAN B&W…
MAN-B&W – S60MC-C – S60MC – L60MC – Piston Skirt
MAN B&W – S60MC-C – S60MC – L60MC – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and major engine components for MAN B&W…
MAN-B&W – S60MC-C – S60MC – L60MC – Piston Rod
MAN B&W – S60MC-C – S60MC – L60MC – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and major engine components for MAN B&W…
MAN-B&W – S50MC-C – S50MC – L50MC – Piston Crown
MAN B&W – S50MC-C – S50MC – L50MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for MAN B&W…
MAN-B&W – S50MC-C – S50MC – L50MC – Piston Rod
MAN B&W – S50MC-C – S50MC – L50MC – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and major engine components for MAN B&W…
MAN-B&W – S50MC-C – S50MC – L50MC – Piston Skirt
MAN B&W – S50MC-C – S50MC – L50MC – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for MAN B&W…
MAN-B&W – S42MC – L42MC – Piston Crown
MAN B&W – S42MC – L42MC – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and major engine components for MAN B&W S42MC and…
MAN-B&W – S42MC – L42MC – Piston Rod
MAN B&W – S42MC – L42MC – PISTON ROD AL-TECH INTERNATIONAL supplies durable and precision-engineered Piston Rods and major engine components for MAN B&W…
MAN-B&W – S35MC-C – S35MC – L35MC – Piston Crown
MAN B&W – S35MC-C – S35MC – L35MC – PISTON CROWN AL-TECH INTERNATIONAL maintains an extensive stock of 2-stroke marine propulsion slow-speed engine components,…
MAN-B&W – S35MC-C – S35MC – L35MC – Piston Rod
MAN B&W – S35MC-C – S35MC – L35MC – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and major engine components for MAN B&W…
MAN-B&W – S35MC-C – S35MC – L35MC – Piston Skirt
MAN B&W – S35MC-C – S35MC – L35MC – PISTON SKIRT AL-TECH INTERNATIONAL maintains an extensive stock of 2-stroke marine propulsion slow-speed engine components,…
MAN-B&W – S26MC – Piston Crown
MAN B&W – S26MC – PISTON CROWN AL-TECH INTERNATIONAL supplies durable and high-quality Piston Crowns and essential engine components for MAN B&W S26MC series…
MAN-B&W – S26MC – Piston Rod
MAN B&W – S26MC – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for MAN B&W S26MC series marine engines.…
MAN-B&W – S26MC – Piston Skirt
MAN B&W – S26MC – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for MAN B&W S26MC series marine engines.…
SULZER – RTFlex60C – PISTON CROWN
SULZER – RTFlex60C – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for SULZER RT-Flex60C series marine engines. SULZER –…
SULZER – RTFlex60C – PISTON SKIRT
SULZER – RTFlex60C – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for SULZER RT-Flex60C series marine engines. MAN Energy…
SULZER – RTA96C – PISTON CROWN – SKIRT – ROD – RING
SULZER – RTA96C – PISTON CROWN – SKIRT – ROD – RING AL-TECH INTERNATIONAL supplies high-quality Piston Crowns, Piston Skirts, Piston Rods, and Piston…
SULZER – RTA84T-RTA84C-RTA84M- RTA84 – PISTON CROWN
SULZER – RTA84T – RTA84C – RTA84M – RTA84 – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for SULZER…
SULZER – RTA84T-RTA84C-RTA84M- RTA84 – PISTON ROD
SULZER – RTA84T – RTA84C – RTA84M – RTA84 – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for SULZER…
SULZER – RTA84T-RTA84C-RTA84M- RTA84 – PISTON SKIRT
SULZER – RTA84T – RTA84C – RTA84M – RTA84 – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for SULZER…
SULZER – RTA76 – PISTON CROWN – ROD – RING
SULZER – RTA76 – PISTON CROWN – ROD – RING AL-TECH INTERNATIONAL supplies high-quality Piston Crowns, Piston Rods, and Piston Rings for SULZER RTA76…
SULZER – RTA76 – PISTON SKIRT
SULZER – RTA76 – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for SULZER RTA76 series marine engines. SULZER –…
SULZER – RTA72U-RTA72 – PISTON CROWN – SKIRT – RING
SULZER – RTA72U – RTA72 – PISTON CROWN – SKIRT – RING AL-TECH INTERNATIONAL supplies high-quality Piston Crowns, Piston Skirts, and Piston Rings for…
SULZER – RTA72U-RTA72 – PISTON ROD
SULZER – RTA72U – RTA72 – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for SULZER RTA72U and RTA72 series…
RTA62-RTA62U-Piston Crown
SULZER – RTA62 – RTA62U – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for SULZER RTA62 and RTA62U series…
RTA62-RTA62U-Piston Rod
SULZER – RTA62 – RTA62U – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for SULZER RTA62 and RTA62U series…
RTA62-RTA62U-Piston Skirt
SULZER – RTA62 – RTA62U – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for SULZER RTA62 and RTA62U series…
RTA58-RTA58T-RTA58TB-Piston Crown
SULZER – RTA58 – RTA58T – RTA58TB – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for SULZER RTA58, RTA58T,…
RTA58-RTA58T-RTA58TB-Piston Rod
SULZER – RTA58 – RTA58T – RTA58TB – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for SULZER RTA58, RTA58T,…
RTA58-RTA58T-RTA58TB-Piston Skirt
SULZER – RTA58 – RTA58T – RTA58TB – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for SULZER RTA58, RTA58T,…
RTA52 – RTA52U – Piston Crown
SULZER – RTA52 – RTA52U – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for SULZER RTA52 and RTA52U series…
RTA52 – RTA52U – Piston Rod
SULZER – RTA52 – RTA52U – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for SULZER RTA52 and RTA52U series…
RTA52 – RTA52U – Piston Skirt
SULZER – RTA52 – RTA52U – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for SULZER RTA52 and RTA52U series…
SULZER – RTA48-RTA48T-RTA48TB – PISTON CROWN – SKIRT
SULZER – RTA48 – RTA48T – RTA48TB – PISTON CROWN – SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and Piston Skirts for SULZER RTA48,…
SULZER – RTA48-RTA48T-RTA48TB – PISTON ROD
SULZER – RTA48 – RTA48T – RTA48TB – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for SULZER RTA48, RTA48T,…
MITSUBISHI – UEC85LSII-UEC85LSC-UEC85 – PISTON CROWN – SKIRT – ROD – RING
MITSUBISHI – UEC85LSII – UEC85LSC – UEC85 – PISTON CROWN – SKIRT – ROD – RING AL-TECH INTERNATIONAL supplies high-quality Piston Crown, Piston Skirt,…
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – Piston Crown
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for MITSUBISHI UEC60LSII, UEC60LS,…
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – Piston Rod
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for MITSUBISHI UEC60LSII, UEC60LS,…
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – Piston Skirt
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for MITSUBISHI UEC60LSII, UEC60LS,…
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – Piston Cooling Insert
MITSUBISHI – UEC60LSII – UEC60LS – UEC60LA – PISTON COOLING INSERT AL-TECH INTERNATIONAL supplies high-quality Piston Cooling Inserts and essential engine components for MITSUBISHI…
UEC52LS – UEC52LA – Piston Crown
MITSUBISHI – UEC52LS – UEC52LA – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for MITSUBISHI UEC52LS and UEC52LA series…
UEC52LS – UEC52LA – Piston Rod
MITSUBISHI – UEC52LS – UEC52LA – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for MITSUBISHI UEC52LS and UEC52LA series…
UEC52LS – UEC52LA – Piston Skirt
MITSUBISHI – UEC52LS – UEC52LA – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for MITSUBISHI UEC52LS and UEC52LA series…
UEC52LS – UEC52LA – Piston Cooling Insert
MITSUBISHI – UEC52LS – UEC52LA – PISTON COOLING INSERT AL-TECH INTERNATIONAL supplies high-quality Piston Cooling Inserts and essential engine components for MITSUBISHI UEC52LS and…
UEC50LSII – UEC50LS – Piston Crown
MITSUBISHI – UEC50LSII – UEC50LS – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for MITSUBISHI UEC50LSII and UEC50LS series…
UEC50LSII – UEC50LS – Piston Rod
MITSUBISHI – UEC50LSII – UEC50LS – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for MITSUBISHI UEC50LSII and UEC50LS series…
UEC50LSII – UEC50LS – Piston Skirt
MITSUBISHI – UEC50LSII – UEC50LS – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential engine components for MITSUBISHI UEC50LSII and UEC50LS series…
UEC45LS – UEC45LA – Piston Crown
MITSUBISHI – UEC45LS – UEC45LA – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential engine components for MITSUBISHI UEC45LS and UEC45LA series…
UEC45LS – UEC45LA – Piston Rod
MITSUBISHI – UEC45LS – UEC45LA – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential engine components for MITSUBISHI UEC45LS and UEC45LA series…
UEC45LS – UEC45LA – Piston Skirt
MITSUBISHI – UEC45LS – UEC45LA – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and critical engine spare parts for MITSUBISHI UEC45LS and UEC45LA…
UEC45LS – UEC45LA – Piston Cooling Insert
MITSUBISHI – UEC45LS – UEC45LA – PISTON COOLING INSERT AL-TECH INTERNATIONAL supplies high-quality Piston Cooling Inserts and essential marine engine spare parts for MITSUBISHI…
UEC37LS – UEC37LA – Piston Crown
MITSUBISHI – UEC37LS – UEC37LA – PISTON CROWN AL-TECH INTERNATIONAL supplies high-quality Piston Crowns and essential marine engine spare parts for MITSUBISHI UEC37LS and…
UEC37LS – UEC37LA – Piston Rod
MITSUBISHI – UEC37LS – UEC37LA – PISTON ROD AL-TECH INTERNATIONAL supplies high-quality Piston Rods and essential marine engine spare parts for MITSUBISHI UEC37LS and…
UEC37LS – UEC37LA – Piston Skirt
MITSUBISHI – UEC37LS – UEC37LA – PISTON SKIRT AL-TECH INTERNATIONAL supplies high-quality Piston Skirts and essential marine engine spare parts for MITSUBISHI UEC37LS and…
UEC37LS – UEC37LA – Cooling Insert
MITSUBISHI – UEC37LS – UEC37LA – COOLING INSERT AL-TECH INTERNATIONAL supplies high-quality Cooling Inserts and essential marine engine spare parts for MITSUBISHI UEC37LS and…
MAN B&W – S46MEB – S46MCC – PISTON CROWN – SKIRT – ROD – RING
MAN B&W – S46ME-B – S46MC-C – PISTON CROWN – SKIRT – ROD – RING We maintain an extensive stock of 2-stroke marine propulsion…






























































