Marine Diesel Parts & Repair

Marine Parts, Repairs, and Maintenance

Serving San Diego Since 1983

Coleman Marine Diesel, Inc. has been firmly committed to providing quality products and excellent customer service in Shelter Island, San Diego since 1983.  We are factory authorized warranty dealers for Cummins, Onan, MAN, Twin Disc, ZF Marine Gears and Lifeline Batteries. Visit our shop or give us a call for all your boat parts and repairs.

Our Services

We are not just a boat parts shop. We also offer full boat repair services.


Engine Overhaul


Engine Repair


Preventative Marine Engine Maintenance


Pre-Purchase Surveys

What People Are Saying

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Find The Parts You Need

Experienced and skilled staff are available to assist with your purchase of engines and generators as well as complete servicing of your vessel. We offer a complete spare parts inventory including Fleetguard Filters. Visit our shop or give us a call with questions about our marine diesel parts inventory.

Factory Authorized Warranty Dealer