Overhaul of caterpillar marine diesel engine onboard USCG cutters

The U.S. Coast Guard is preparing to solicit an Indefinite Delivery Indefinite Quantity contract for overhaul of Caterpillar marine diesel engines onboard USCG cutters, with sources sought responses due by June 12, 2026 at 11:00 AM PST. No set-aside applies. The contract covers repair, maintenance, and overhaul of CAT ship's service and main propulsion diesel engines across Seagoing and Coastal Buoy Tenders (WLB and WLM), Inland and River Tenders (WLI, WLIC, and WLR), and Tugs (WTGB and WYTL) class vessels, with work performed onsite at cutter homeports except for certain long block renewals. Engine models include D353, D379, D3304, D3306, D3406, D3412, D3508, and D3608.

Services encompass full-service authorized/certified technical support including CAMPAR testing, engine timing synchronization, valve rotators, and vibration analysis. Overhauls include top-end and center section work, potentially involving machining, governor overhaul, block renewal, power pack renewal, connecting rod renewal, turbocharger renewal, exhaust manifold renewal, and engine mount renewal using genuine CAT-approved parts. The government estimates 29–38 main propulsion diesel engines will be serviced annually. The contract spans one base year and four option years.

Respondents must demonstrate a minimum of six years' experience on the identified systems and evidence of access to Caterpillar proprietary components through signed agreements, licensing agreements, or certified technicians. Joint venture responses must show past performance on similar-scope projects completed together as a team. Responses must include company name, address, DUNS number, point of contact, business size classification, small business certification, proposal submission intent as prime contractor, and past performance documentation. Submit to sandra.a.martinez@uscg.mil or fax (757) 628-4628. NAICS 336611 applies with a size standard of 1,300 employees.