G-6 Series

G-6 Series




At the heart of the GROCO U-LUBE System is a powerful gear pump that delivers an honest 3-plus GPM.  All models have dry-run protection, touchpad control, a plumbing schematic to tell you what hose goes where, and a handy maintenance log. Models are offered with 3, 4, 5 or 6 valves to connect all of the devices you want to service.  A complete assortment of oil pan adaptors, related fittings and valves are offered to complete your installation.

An optional safety circuit can be provided to disable the pump if any of the connected engines is operating.  Contact GROCO for details.

G-3, G-4, G-5 and G-6 are covered (except for the valves), for a clean engine room appearance, and offers a compact mount footprint. Touch-pad control and over-current protection are cover-mounted



  • Made in the USA
  • Powerful gearpump delivers nearly twice the flow as competitive models. 
  • Touchpad controlled
  • Bronze manifold system
  • System sizes from 3 valves to 6 valves .
  • Resettable overcurrent and dry-run protection.
  • Cover conceals pump and circuitry on G series.
  • Oil Pan Adaptors (OPD Series) are available for all common marine engines


Product Name # of ValvesManifold ConnectionPump ConnectionCover IncludedSelf PrimingMax GPMBreaker DC

G-4 12V

41/2" NPT1/2" Hose BarbYesYes325 amp

G-4 24V

41/2" NPT1/2" Hose BarbYesYes315 amp

G-5 12V

51/2" NPT1/2" Hose BarbYesYes325 amp

G-5 24V

51/2" NPT1/2" Hose BarbYesYes315 amp

G-6 12V

61/2" NPT1/2" Hose BarbYesYes325 amp

G-6 24V

61/2" NPT1/2" Hose BarbYesYes315 amp

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