The MAN B&W L23/30 engine was developed in the mid 1980s as a medium-speed diesel engine that could serve both auxiliary generator and small propulsion applications, following the increasing demand among shipowners for engines that offered better fuel economy. The L23/30 engine was widely adopted as an auxiliary engine on cargo ships, tankers, bulk carriers, ferries, and offshore support vessels, while also being used in propulsion applications such as fishing vessels and smaller workboats. The L23/30 offered a power range of 580 kW to 1,400 kW, with speeds of 720 to 900 rpm. One of the key features that made the MAN B&W L23/30 successful was its compact and modular design, allowing for easy installation and straightforward maintenance. The engine was built with a robust cast-iron structure, constant-pressure turbocharging with intercooling, and an efficient fuel injection system. Its ability to run on both marine diesel oil (MDO) and heavy fuel oil (HFO up to 700 cSt) made it especially attractive to shipowners seeking lower operating costs. Additional strengths included long TBO intervals and smooth load acceptance. 

Today, although many original MAN B&W L23/30 engines are considered legacy units, they continue to operate worldwide and remain widely supported by MAN specialists and second-hand engine parts suppliers such as Alang Maritime. With access to original unused surplus parts, our own huge stock, and reliable sourcing through trusted local traders, Alang Maritime is a trusted supplier of MAN B&W L23/30 engine spare parts.

Engine Configurations: 5L23/30, 6L23/30, 7L23/30, 8L23/30, 9L23/30

Supply scope of Alang Maritime for MAN B&W L23/30 engines:

Complete engines, crankshafts, cylinder heads, cylinder liners, pistons, connecting rods, engine blocks, exhaust valves, inlet valves, valve seats, bearings, lube oil pumps, air starters, fuel injectors, plungers and other consumables.

Alang Maritime is one of Southeast Asia’s premier suppliers of high quality second hand spare parts for two-stroke and four-stroke marine diesel engines. We can supply new (unused surplus) parts that are obtained from scrap vessels or shipowners’ surplus from cancelled projects. We can also supply reconditioned parts, as well as used parts that are offered with technical reports.

The brands that we supply parts for are:

Yanmar | Daihatsu | MaK | Wärtsilä | MAN B&W | Bergen | Sulzer | Pielstick | Caterpillar | Niigata | Hyundai-HiMSEN

Alang Maritime stocks new, reconditioned, as well as quality controlled used parts for marine diesel engines. Our strengths are our 30+ years of experience in the maritime industry, a huge stocking space of more than 3,500 sq. mt., an extensive stock of more than 25,000+ engine parts, our technical knowledge of marine diesel engines and our close proximity to the Indian ship recycling yard of Alang. That is why Alang Maritime is your premier solution for high quality marine diesel engine parts at an economical cost.