Description
The UGP 0G5894 maintenance kit lets you perform routine ignition and filter maintenance on a compatible 20 kW air-cooled standby generator. Designed for select pre-2013 generators equipped with 999cc V-twin engines, this 20 kW generator maintenance kit includes an air filter, an extra-capacity oil filter, and two spark plugs.
The UGP air filter replaces Generac 0G5894 and helps prevent dust and debris from entering the engine. The UGP 90 mm oil filter replaces Generac 070185E and 070185ES, while the Briggs & Stratton 491055T spark plugs support dependable ignition in compatible engines.
What Is Included in the UGP 0G5894 Maintenance Kit?
- 1 UGP air filter replacing Generac 0G5894
- 1 UGP 90 mm oil filter replacing Generac 070185E, 070185ES
- 2 Briggs & Stratton 491055T spark plugs
Please note: Engine oil, funnel, oil wipe, and other maintenance supplies are not included.
Product Features
- Filter and ignition maintenance kit
- Designed for select pre-2013 20 kW standby generators
- Compatible with designated 999cc V-twin engines
- Air filter helps maintain clean engine airflow
- Oil filter helps remove contaminants from circulating oil
- Spark plugs support dependable engine ignition
- Convenient package for routine generator servicing
Compatible Brands
This kit is designed for select generators sold under the Generac, Guardian, Centurion, Watchdog, Eaton, Honeywell, and Siemens brands. Compatibility depends on the generator’s engine, model, and production date.
Compatible Generator Models
0055060, 0055250, 0055251, 0055330, 0055390, 0056140, 0057440, 0057450, 0057690, 0058130, 0058750, 0058751, 0058870, 0058960, 0059010.
Part-Number Information
- Air-filter replacement: 0G5894
- Oil-filter replacements: 070185E, 070185ES
- Spark-plug number: 491055T
- Referenced maintenance kits: 5665, 0J57680SSM
Part-number references do not guarantee compatibility with every generator using one of these components. All included parts must match the same generator application.
Product Information
- Brand: Universal Generator Parts
- Product type: Generator maintenance kit
- Generator application: Select 20 kW air-cooled standby generators
- Engine application: Select 999cc V-twin engines
- Production range: Primarily select 2008–2012 units
- Oil included: No
- Condition: New
- Fitment type: Equipment-specific
- Component classification: Mixed UGP and Briggs & Stratton parts
Maintenance Guidance for Your Generator
Follow the maintenance schedule and service 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 servicing.
- Confirm that the air filter is properly seated.
- Lubricate the new oil-filter gasket with clean engine oil, and install the filter according to the specified tightening instructions.
- Check the spark-plug gaps before installation, and tighten the plugs to the engine manufacturer’s specified torque.
- Refill the engine with the approved oil type and quantity, then inspect the oil-filter area for leakage.
Verify the generator model and serial numbers before ordering.
Frequently Asked Questions
Does the UGP 0G5894 maintenance kit include engine oil?
No. Engine oil, a funnel, an oil wipe, and other maintenance supplies are not included. You will need to buy the approved oil type and quantity separately.
Which generators is this 20 kW generator maintenance kit made for?
It is designed for select pre-2013 20 kW air-cooled standby generators with 999cc V-twin engines, primarily select 2008–2012 units. Compatible brands include Generac, Guardian, Centurion, Watchdog, Eaton, Honeywell, and Siemens. Compare your model number with the compatible model list above and verify your model and serial numbers before ordering.
Which part numbers does this kit replace?
The UGP air filter replaces Generac 0G5894. The UGP 90 mm oil filter replaces Generac 070185E and 070185ES. The kit also includes two Briggs & Stratton 491055T spark plugs.
Order Your Generator Service Parts
Confirm your generator’s engine, model, and production date, then order the UGP 0G5894 maintenance kit to keep your routine servicing simple and organized.










