We supply alternators for all Yanmar marine engines, including the 1GM, 2GM, 3GM, 2YM, 3YM, 4JH, 3JH, 4LH, 6LP, 6LY, 6BY, 4BY and JH series. Choose from genuine Yanmar units or quality aftermarket alternatives, all built to cope with life in a marine environment.
Order before 5pm and we'll get it to you next day (UK mainland only), so you're back on the water with minimal downtime.
We've been supplying charging system parts since 1989, and in that time we've built up the kind of product knowledge you only get from decades in the trade. We stock both 12V and 24V alternators across a range of outputs, from compact units for sailboat auxiliaries through to high-output models for cruisers running fridges, inverters and domestic battery banks. Every alternator we sell is chosen for its proven reliability on the water.
If you're not sure which alternator fits your engine, check your engine model and serial number against the listing, or get in touch and we'll confirm compatibility, output and pulley type before you buy.