Velvac, Inc. 601065 Diesel Fuel Cap Non-Locking

Velvac Inc. 601065 Diesel Fuel Cap is a heavy-duty aluminum, non-locking bayonet-style fuel cap engineered for diesel-powered commercial vehicles and industrial equipment. It uses a 4-inch nominal size with a 3-7/8-inch across-threads cap diameter, delivering a secure seal and proper venting for diesel tanks. The vented design helps maintain pressure balance during operation, while corrosion-resistant aluminum construction stands up to harsh service in fleet environments. Designed for OEM replacement and fleet maintenance, the cap fits 4-inch bayonet-style filler necks on heavy-duty trucks, buses, construction equipment, and other diesel-powered machinery with compatible fittings. This non-locking cap provides straightforward operation while protecting the fill area from debris and leaks. For reference, common replacements include Velvac 600181-6 Aluminum Locking Fuel Cap, Gates 31804 Fuel Tank Cap, and Tectran 91-8005 Bayonet Fuel Cap.