Main Engine 4-Stroke · Main Engines (4-Stroke)
The 7LH21/32P is a marine diesel engine designed for heavy-duty applications. Manufactured by HiMSEN, this engine features a bore of 210 mm and a stroke of 320 mm, with seven cylinders arranged in an L configuration. It operates on a 4-stroke cycle at speeds ranging from 720 to 900 rpm, delivering 1540 kW of power, making it suitable for various maritime needs. The engine is Tier II and Tier III compliant, ensuring it meets stringent emission standards. Common issues include piston cooling nozzle blockages due to residue and combustion deposits, crankcase oil mist build-up from defective rings or worn liners, exhaust valve seat erosion leading to reduced flow, and coking in fuel injection nozzles resulting from poor fuel quality. Regular maintenance is crucial to prevent these failures.
Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.
Free of charge — send us your request for HiMSEN equipment. Our team checks it and replies by e-mail.
Other models of the same equipment type, HiMSEN first.
Tell us what you need for this HiMSEN 7LH21/32P — a part, a service call, a second opinion. Are you HiMSEN? Claim this brand page.
Service engineer? Write the day report for this 7LH21/32P in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →
Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.
Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.
Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.