GENERAC 5655 Liquid Cooled Maintenance Kit for Liquid-Cooled Models Rated From 25,000 to 30,000 W

The Generac 5655 kit is built for liquid-cooled standby generators rated from 25,000 to 30,000 watts. It is not for air-cooled units, so if your unit is an air-cooled home standby in the 8kW to 22kW range, this is the wrong kit. Check the rating plate on your generator before ordering.

Each 5655 kit contains an air filter, an oil filter, four spark plugs, a chamois and a service reminder sticker. Engine oil is not part of the kit, so order the correct grade and quantity for your unit separately if you are doing a full service.

Generac's recommended service interval for these liquid-cooled units is every 200 run hours or every 2 years, whichever comes first. For facilities running weekly exercise cycles plus outages, the hour meter usually hits first; for a lightly used standby set, the 2 year calendar limit governs. The kit includes a reminder sticker to log the service date on the unit.

Four spark plugs ship in the 5655 kit. That matches a four-cylinder liquid-cooled engine in the 25kW to 30kW range. If your generator runs a larger engine with more than four cylinders, the plug count will come up short and you need the kit matched to that unit's rating.

It is a spin-on canister style oil filter, so it threads onto the engine's filter mount and comes off with a standard band or cap style filter wrench. There is no cartridge element or separate housing to deal with.

Plan on supplying your own tools. The kit covers the consumable parts (air filter, oil filter, four plugs) plus a chamois and reminder sticker, so you will want a filter wrench, a plug socket with a gap gauge, a drain pan and a funnel on the truck before you start the service.

Yes, and it is a sensible way to run it if you maintain multiple liquid-cooled sets in the 25kW to 30kW band, since one kit services one unit per interval. The kit is light, about 3 lbs packaged, so shelving a season's worth of them takes very little storeroom space. Note that this item is not returnable, so confirm your generator ratings before buying in quantity.