Groco G-3A 12V Marine Oil Change System 3-Valve Gear Pump Kit with Cover

The Groco G-3A 12V is a professional-grade, 3-valve marine oil change system engineered to make engine oil changes fast, clean, and mess-free aboard any vessel. Built around a powerful self-priming gear pump with a bronze manifold, this system delivers over 3 GPM — nearly twice the flow rate of competing models — for rapid, thorough extraction and transfer of used engine oil.

Key Features:

• 3-valve bronze manifold system — service up to three engines or fluid reservoirs from a single unit
• Powerful gear pump delivers 3+ GPM, nearly twice the flow of competitive models
• 12-volt DC operation for direct connection to onboard marine electrical systems
• Touchpad control with cover-mounted interface for simple, one-touch operation
• Resettable overcurrent and dry-run protection safeguard the pump and motor
• Protective cover conceals pump and circuitry for a clean engine room appearance
• Compact mount footprint designed for tight engine compartments
• Included plumbing schematic clearly identifies all hose connections
• Built-in maintenance log for tracking oil change intervals
• Compatible with optional safety circuit to disable pump while engines are running
• Oil pan adaptors (OPD Series) available for all common marine engines

The G-3A system is ideal for inboard engines, generators, transmissions, and other marine power equipment where drain plug access is difficult or impossible. The covered design keeps the installation neat while protecting components from the harsh marine environment. Available in 3-, 4-, 5-, and 6-valve configurations to match your specific service requirements.