About Casco Bay Diesel

keeping diesel engines running since 1994.

Casco Bay Diesel started as a one man operation in 1994 by Bob Chamberlain and his wife Cathy.

His goal was just to provide more personal attention to his customers in the marine and heavy equipment industry, servicing engines, transmissions, and other related components on just about anything with a diesel engine.

In 2018, Bob wanted to focus more on working in the shop and diagnostic work- which is his passion. He sold the company to his daughter Angela and her husband Galen Gullatt.

That same year, Casco Bay Diesel acquired “Cornell Diesel”, which had been a fuel injection pump shop in Portland for over 50 years, and the company became Casco Bay Diesel and Injection services.

Over 50 Years Experience

Decades in the game, with the tools and training to handle anything you throw our way.
All-Star Service

We’re not just fixing engines. We're building relationships that last.
Anywhere, Anytime

From local docks to far-off harbors, we’ve got your back.

Meet the Team

From a one-man band to Two service centers

With the new fuel shop and several new engine dealerships, we have two fully authorized service centres in Portland, Maine and Hyannis on Cape Cod, Massachusetts. We also have 9 service trucks and primarily cover the coastlines of New England.

Portland, Maine

Hyannis, Massachusetts

Social Media

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cascobaydiesel

CB Diesel & Injection Service Diesel engine repair and injection pump shop locations in Portland ME and Cape Cod MA (207) 878-9377 Cell (207) 650-0176... more 470 Riverside St, Unit 7, Portland, Maine 04103

For Sale – Cummins 6BTA 5.9 315 HP @ 2800 RPM Ful