Home - Coleman Marine Diesel

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.

What People Are Saying

Don’t just take our word for it. Take a look at our verified Google Reviews.

I had them do a pre-purchase inspection on a 55 ft yacht. They were incredibly thorough, saved me 10's of thousands in unknown repairs. Best diesel mechanic in San Diego! Great office staff too! Cant recommend enough!

Most professional diesel service in San Diego. This team is efficient and will give you the best possible outcome.

I am not the easiest customer nor do I normally write reviews but I felt compelled partly to help others pick out the right mechanic. These guys are honest, fast and great at what they do. I have nothing but great things to say and would recommend to anyone. Thank you Team Coleman.

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.