125 Harbor Way

Santa Barbara, CA 93101

(805) 774-0637

24/7 Customer Support

Mon - Fri: 9:00 - 5:30

On call service available

Marine Diesel Fuel System Diagnosis Center

Marine diesel fuel system diagnosis showing Racor primary filter, secondary filter, lift pump and injection pump - serviced by 805 Marine Diesel Mechanic Ventura California

Marine Diesel Fuel System Diagnosis Center: Water, Air & Low Pressure Problems Fuel system failures are the number one cause of marine diesel engine problems, yet they are also the most misdiagnosed. When fuel delivery becomes unstable—whether from restriction, air intrusion, or contamination—the engine does not fail in one obvious way. Instead, it produces symptoms […]

Marine Mechanic Services Channel Islands

caterpillar C18 marine engine room

805 Marine Mechanic proudly serves the Channel Islands, Ventura, Oxnard, and Santa Barbara boating communities with premium inboard marine diesel service. Before planning maintenance, diagnostics, or repairs, start with the Master Marine Diesel Troubleshooting Guide so your engine issue is traced through fuel, cooling, electrical, propulsion, and mechanical systems correctly. Marine Mechanic Services Channel Islands: […]

Mobile Marine Services Channel Islands

Mobile Marine Services Channel Islands

Mobile marine services in Channel Islands Harbor help boat owners reduce downtime, simplify maintenance, and keep diesel-powered vessels operating reliably without unnecessary hauling or towing. For yachts, sportfishing boats, cruisers, and commercial vessels running throughout Ventura and Santa Barbara waters, dependable dockside diesel support is critical. 805 Marine Diesel Mechanic provides mobile inboard marine diesel […]

Boat Technicians Channel Islands

marine engine survey

Boat technicians in the Channel Islands region help vessel owners maintain reliable diesel performance while reducing the risk of offshore breakdowns. Boats operating around Channel Islands Harbor, Ventura Harbor, and the Santa Barbara coastline face constant exposure to salt air, vibration, humidity, fuel contamination, and heavy operating loads that gradually affect engine reliability. 805 Marine […]

Boat Repair Santa Barbara

Boat Repair | Santa Barbara 62ft Viking Yacht

Boat Repair Santa Barbara Trusted inboard marine diesel boat repair, maintenance, diagnostics, and mobile dockside service for Santa Barbara, Ventura, Oxnard, and Channel Islands Harbor. 805 Marine Diesel Mechanic specializes in mobile marine diesel repair and preventative maintenance for offshore fishing boats, cruising yachts, commercial vessels, and inboard diesel-powered boats throughout California’s Central Coast. Marine […]

Cummins Marine Services

marine diesel engine dual fuel oil filtration system

Cummins QSB6.7 & QSB7 Fuel Filtration Upgrades for Offshore Reliability Professional Cummins QSB6.7/QSB7 fuel-system upgrades, Keenan dual-filter installations, and offshore marine diesel support throughout Ventura Harbor, Oxnard, Channel Islands Harbor, and Santa Barbara. The Cummins QSB6.7 and QSB7 marine diesel platforms are trusted throughout the marine industry for excellent torque output, fuel efficiency, smooth throttle […]

Cummins Marine Diesel Engine Services

Cummins marine diesel engine specifications

Cummins QSM11 Marine Diesel Services in Ventura, Oxnard, Channel Islands Harbor & Santa Barbara Cummins QSM11 marine diesel engines are known for strong torque, dependable offshore performance, and long service life when maintained correctly. These engines are commonly used in sportfishing boats, cruising yachts, passenger vessels, and commercial marine applications where reliability matters every time […]