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. 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 and Lifeline Batteries. Comprehensive inspections for pre-purchase used boat engines, transmissions & generators provide you with peace of mind prior to sale.
We offer a complete spare parts inventory including Fleetguard Filters and Lifeline Batteries. Comprehensive inspections for pre-purchase used boat engines, transmissions & generators provide you with peace of mind prior to sale.
Reviews (7)
Jon Nickerson
Oct 30, 2021
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Gary Gibson
Aug 24, 2021
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Ryan Mehrvar
Dec 24, 2020
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Never did I think spending $30,000 on a new motor would be so difficult. Greta found a way to do that though! Refuse to work with the customers request, put her own personal interpretations and feelings into my project as a customer. This company was just taken over a few months ago and they clearly have no idea what they’re doing. Not to mention she’s only in the office 1 to 2 days a week. Extreme lack of customer service and assistance. Stay away at all costs
Steve Labarre
Nov 20, 2020
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Emad Mirgoli
Nov 09, 2020
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Katherine Powell
Oct 14, 2020
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Bought a boat that needed some love. Some of the issues we were able to work out ourselves but in the interest of saving the marriage we brought in Coleman to tackle the jobs that were either too big, too hard or just too much of a pain. The quotes were fair and actual work came under the original quote. They didn't even charge extra for "So, what does that do/ how does that work?" questions. The mechanics were prompt, friendly and left my engine room surgically clean. Our technicians Kane and Paul were amazingly professional! Hope (manager) was a joy to work with and answered all our questions
Francisco Ortega
Sep 23, 2020
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