Description
Title
Generac 0E1126ESRV, 5664 OEM Maintenance Kit for 12–18 kW Pre-2013 Generators
Product Slug
generac-0e1126esrv-5664-oem-maintenance-kit-12-18kw-pre-2013-generators
Long Description
Perform routine filter and ignition service on a compatible pre-2013 air-cooled standby generator with the genuine Generac 0E1126ESRV Maintenance Kit. Also identified as maintenance kit 5664, it is designed for select 12–18 kW home standby generators with compatible 760cc, 990cc, or 992cc engines.
The kit includes an air filter, an extra-capacity oil filter, two spark plugs, and convenient service supplies. Engine oil is not included and must be purchased separately according to the specifications in the generator owner’s manual.
Kit Includes:
• 1 genuine Generac air filter
• 1 genuine Generac extra-capacity oil filter
• 2 genuine Generac spark plugs
• 1 oil funnel
• 1 chamois cloth
• 1 service-reminder sticker
Engine oil, tools, and other maintenance supplies are not included.
Product Features:
• Genuine Generac OEM maintenance kit
• Interchangeable with Generac kit number 5664
• Designed for select pre-2013 air-cooled standby generators
• Compatible with designated 12–18 kW applications
• Includes filtration and ignition components
• Extra-capacity 90 mm oil filter
• Suitable for routine scheduled maintenance
Compatible Generator Applications:
• Select 12–18 kW air-cooled home standby generators
• Select 760cc engines
• Select 990cc and 992cc engines
• Certain 8 kW V-twin generator applications
• Pre-Evolution controller models manufactured before 2013
Compatibility depends on the generator’s complete model, engine, controller, production date, and serial number.
Compatible Brands:
The kit may fit select generators sold under the Generac, Guardian, Centurion, Watchdog, Bryant, Carrier, Honeywell, Siemens, and Eaton brands. Brand name or output rating alone does not establish compatibility.
Part-Number Information:
• Maintenance-kit number: 0E1126ESRV
• Interchangeable kit number: 5664
• Oil-filter style: Extra-capacity 90 mm
Product Information:
• Brand: Generac
• Product type: Generator maintenance kit
• Generator application: Select 12–18 kW air-cooled standby generators
• Engine application: Select 760cc, 990cc, and 992cc engines
• Production application: Pre-2013 models
• Controller application: Primarily pre-Evolution units
• Oil included: No
• Spark-plug quantity: 2
• Condition: New
• Fitment type: Equipment-specific
• Classification: Genuine OEM maintenance components
Maintenance Guidance:
Follow the service schedule and procedures in the generator owner’s manual. Turn off the generator, disable automatic starting, disconnect the starting battery as directed, and allow the engine to cool before maintenance.
Install the air filter in the correct orientation. Clean the oil-filter mounting surface, confirm that the old gasket has been removed, lightly coat the new filter gasket with clean engine oil, and tighten the filter according to Generac’s instructions.
Check both spark-plug gaps before installation and tighten the plugs to the specified torque. Add the approved oil type and quantity while monitoring the dipstick.
After service, run the generator, inspect the oil-filter area for leakage, stop the engine, and recheck the oil level. Verify the generator’s complete model and serial numbers before ordering.









