The Sulzer AL25/30 was introduced in the 1970s as a robust medium-speed diesel engine that served as a reliable option primarily for auxiliary power generation and industrial use. The engines were known for their ease of maintenance and economical operations. AL25/30 engines found widespread use on vessels such as tugs, fishing boats, tankers and cargo vessels. Featuring a 250 mm bore with a 300 mm stroke, the AL25/30 engine produced power of about 135 kW to 165 kW per cylinder, at speeds of about 750 rpm. The AL25/30 engines were able to run on MDO and HFO, making them fuel flexible. They also had a high thermal efficiency, with a compression ratio between 1:12.7 to 1:13. 

Though AL25/30 engines are now considered legacy engines, support for them still remains readily available through Sulzer specialists, OEMs and independent engine parts suppliers. With access to original unused surplus components sourced from decommissioned vessels and reliable sourcing through trusted local traders, Alang Maritime is a dependable option for Sulzer AL25/30 engine spare parts and maintenance requirements.

Engine Configurations: 3AL25/30, 5AL25/30, 6AL25/30, 8AL25/30, 12AV25/30, 16AV25/30

Supply scope of Alang Maritime for AL25/30 engines:

Crankshafts, cylinder heads, cylinder liners, pistons, connecting rods, engine blocks, exhaust valves, valve seats, valve cages, 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.