Generac Maintenance Kit 20kW 9...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$88.56
$34.99
GENERAC 6485 Maintenance Kit 20 kW 999CC

Generac Maintenance Kit 20kW 999CC Engine Complete Service Kit

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Model: 6485
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$88.56
$34.99
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Generac Maintenance Kit 20kW 999CC Engine Complete Service Kit

Professional Generator Maintenance Solution

The Generac Maintenance Kit 20kW 999CC delivers comprehensive service components and exceptional maintenance support for 20kW standby generators with 999CC engines. This complete maintenance kit provides essential service parts designed for homeowners, contractors, and service technicians, offering the proven reliability and advanced engineering that customers trust from America's leading generator manufacturer.

Professional Features & Benefits

Complete Service Components

  • Dual Spark Plugs Included - Two high-quality spark plugs ensure optimal ignition performance and reliable engine operation for 999CC engines
  • Spin-On Canister Oil Filter - Professional-grade oil filtration system maintains engine lubrication and extends generator life
  • Air Filter with Pre-Cleaner - Advanced air filtration protects engine from contaminants and ensures clean combustion air intake
  • Service Accessories Included - Funnel and chamois cloth provide professional maintenance tools for clean, efficient service procedures

Maintenance Convenience

  • Complete Kit Solution - All essential maintenance components in one convenient package for comprehensive generator service
  • Service Reminder Included - Maintenance reminder helps track service intervals and ensures optimal generator performance
  • Professional Quality Components - Genuine Generac parts engineered specifically for 20kW generators with 999CC engines

Technical Specifications

Compatible with 20kW generators featuring 999CC engines, includes 2 spark plugs, spin-on canister oil filter, air filter with pre-cleaner, funnel, chamois cloth, and service reminder. Kit weight: 2.0 lbs. Manufactured in Uzbekistan. Filter style: spin-on canister design. Package contents: 2 spark plugs, air filter, oil filter, funnel, chamois, reminder. Warranty: consumable items, no warranty coverage.

Installation & Operation

  1. Ensure generator is completely cool and disconnected from power before beginning maintenance service
  2. Remove old spark plugs using appropriate spark plug socket and replace with included new plugs
  3. Replace oil filter using spin-on canister design, ensuring proper seal and torque specifications
  4. Install new air filter and pre-cleaner assembly, checking for proper fit and seal
  5. Use included funnel for clean oil changes and chamois for cleanup during service procedures
  6. Record maintenance date using included reminder system and schedule next service interval

Professional Applications

Ideal for:

  • Standby Generator Maintenance - Essential service kit for 20kW residential and commercial standby generators
  • Professional Service Technicians - Complete maintenance solution for generator service professionals and contractors
  • Homeowner Maintenance - DIY-friendly maintenance kit for homeowners maintaining their own backup power systems
  • Commercial Generator Service - Business and facility maintenance for critical backup power equipment
  • Preventive Maintenance Programs - Scheduled maintenance for optimal generator reliability and performance
  • Emergency Preparedness - Maintenance supplies for ensuring backup power readiness during critical situations
  • Generator Fleet Maintenance - Service kit for maintaining multiple 20kW generators in commercial applications
  • Seasonal Service Preparation - Annual maintenance preparation for storm season and emergency power needs

999CC Engine Advantage

The 999CC engine specification ensures this maintenance kit provides precisely engineered components for optimal performance. Generac's engine-specific maintenance kits deliver proper filtration, ignition, and service components designed for the unique requirements of 20kW power output and 999CC displacement, ensuring maximum reliability and extended generator life.

Why Choose Generac Quality?

Generac's commitment to reliable power generation extends to comprehensive maintenance support with genuine replacement parts and service components. Advanced engineering ensures each maintenance kit component meets strict quality standards, while comprehensive testing and quality control guarantee compatibility and performance. Trusted by homeowners, contractors, and service professionals for backup power maintenance, Generac provides innovative maintenance solutions for ease of service and America's #1 selling generator brand reputation for dependable power generation equipment.

Manufacturer Resources

Product Specs

Air Filter Included:
Yes
Assembled Weight:
2.0 lbs
Contains Chemicals That Cause Birth Defects Calif Prop65 :
No
Country Of Origin:
Uzbekistan
Filter Style:
Spin-on Canister
Funnel Included:
Yes
Manufacturer Warranty:
none, consumable
Number Of Spark Plugs:
2
Oil Filter Included:
Yes
Overall Weight:
2.0 lbs
Package Contents:
2 spark plugs, air filter, oil filter, funnel, chamois, reminder
Restrictions:
No
Wrench Key Included:
No
Department:
Electrical
Product Group:
Accessories
Product Subgroup:
Maintenance Kit

Generac 6485 – Frequently Asked Questions

1) Will the Generac 6485 maintenance kit fit my 20kW standby generator?
The 6485 kit is built for 20kW Generac standby units running the 999cc engine. Match on engine displacement, not just the kW rating, since Generac has used more than one engine behind 20kW output. Check the engine data plate for 999cc before ordering. The kit carries two spark plugs, which is what a 999cc twin takes.
2) What comes in the Generac 6485 service kit?
Six items: two spark plugs, an air filter with pre-cleaner, a spin-on canister oil filter, a funnel, a chamois cloth, and a service reminder. That covers a full oil-and-filter service plus ignition in one box, so a tech doing a fleet of 20kW units isn't chasing part numbers separately.
3) Does the Generac 6485 kit include engine oil?
No oil in the box. The 6485 supplies the filters, two plugs, funnel, chamois and reminder only, so order the correct oil for your unit separately. The funnel is included for the fill, which is the part people usually assume they have to add.
4) Do I need any tools to use the Generac 6485 maintenance kit?
No wrench or filter key is packed with the 6485. You supply the spark plug socket and whatever you use to spin the oil filter off. The filter is a spin-on canister type, so a standard cap or strap filter wrench handles it.
5) Can a homeowner do this service themselves or does it need a technician?
Either. The 6485 is a straightforward filter-and-plug service: let the generator cool and disconnect it from power, swap both plugs, spin off and replace the oil filter, fit the new air filter and pre-cleaner, then log the date on the reminder card. Service techs use the same kit on commercial 20kW units, so a facility running several generators can standardize on one part number.
6) How many maintenance kits do I need for a building with several 20kW Generac generators?
One 6485 kit services one 999cc 20kW unit per interval, since each box holds a single set: two plugs, one air filter, one oil filter. Buy one per generator per service, and confirm every unit in the fleet is the 999cc engine, because a different displacement takes a different kit.
7) Does the Generac 6485 kit have any California Prop 65 or shipping restrictions?
None on either count. The 6485 kit carries no Prop 65 birth-defect chemical declaration and no shipping restrictions, which matters if you're stocking these for a multi-site maintenance program in California. Shipping weight is 2.0 lbs.
How fast can I get the Generac 6485 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Generac 6485 come with a warranty?
Absolutely. The Generac 6485 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Generac 6485?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Generac 6485 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.

Product Reviews

  • 5
    Excellent Kit

    Posted by Joel Grajeda on Nov 25th 2025

    Comes with everything needed. Packaged well and was ready to use right out of the box.

  • 5
    Maintenace Kit

    Posted by Joel Grajeda on Nov 10th 2025

    Exactly how it looked in the photo, perfect product.

!