Looking for the best electrical parts to keep your Generac generator running reliably?
We offer durable, easy-to-install components that ensure optimal performance and long-lasting power for your home or business.
Generac generators power your world. Dependable parts keep them running strong.
Automatic Voltage Regulators (AVRs) ensure stable power. Maintenance kits simplify routine care. Fuel gauges show levels at a glance.
Carbon brushes boost longevity. Remote start kits add convenience. Oil pressure switches guard engine health.
Every part here is built for reliability. Each piece fits like it was made for your generator. Your generator stays ready, no matter what.
List of Top 10 Generac Generator Electrical Parts
| Image | Title | Best For | Price |
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YAMAKATO 5000-9900 watt Generator AVR Rectifier for Predator Honda Champion Generac etc.Voltage Regulator AVR OEM 5~8kw 5000 5500 6000 6500 7000 7500 8000 8500 8750 9000 9500 338cc~459cc |
This AVR Rectifier is perfect for generator owners needing to replace faulty voltage regulators in 5,000–9,500 watt models. It works with Honda, Generac, Champion, Predator, and other brands, fitting both plastic and aluminum housings for easy upgrades. |
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Generac 6485 Scheduled Maintenance Kit for 20kW and 22kW Standby Generators with 999cc Engine Black |
This kit is perfect for homeowners with Generac 20kW or 22kW standby generators needing regular maintenance. It includes all essential parts like filters, spark plugs, and tools to keep the 999cc engine running smoothly. Ideal for dusty environments where frequent upkeep matters. Oil must be bought separately. |
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WOTIAN Generator Avr Automatic Voltage Regulator Compatible with Honda Predator Champion Firman DuroMax Generator Parts 3500 4000 watt 2KW 3KW 3.5KW 4KW 30060-Y025110 Homelite 290440011 4375 4650 |
This WOTIAN Generator AVR is perfect for anyone with a 2kW to 4kW generator from Honda, Predator, Champion, Firman, or similar brands. It’s easy to install and adjusts voltage for reliable power output. |
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YAMAKATO 5~8kw Generator AVR for Predator Honda Champion Generac Antomatic Voltage Regulator 5000 5500 6000 6500 7000 7500 8000 8500 8750 9000 9500 338cc~459cc |
This YAMAKATO AVR is perfect for anyone with a 5~8kw generator from brands like Predator, Honda, Champion, or Generac, especially if you need an emergency-stop plug feature. It’s designed for engines ranging from 301cc to 459cc and supports generators with running power from 5000 to 9500 watts. |
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Generator Fuel Gauge for Generac 0H9005 GP5500 GP6500 RS5500 RS7000E GP7500E RS8000E XT8000E XT8500EFI, 5500w 6500 6500w 7500 389cc OHV Portable Generator |
This generator fuel gauge is perfect for Generac owners who want a quick and easy way to monitor their fuel levels. It’s a durable, direct replacement for many popular Generac models, making it simple to install and read at a glance. |
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Universal Generator Part -Generator Kit (Evolution-5W30) Replacement for 0J8478S – Complete Service kit – Enhance Optimal Performance – Longevity Model 0J932300SM 10 to 26KW |
This product is perfect for generator owners with 10-26kW Generac Guardian Series or compatible models. It provides a complete service kit with oil, filters, and spark plugs to ensure optimal performance and longevity for their equipment. |
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YAMAKATO Predator 6500 8750 9000 Generator Carbon Brush Assembly OEM for Honda Champion 7000 8000 7500 9400 9500 5000 5500, Generac ETQ Powermate Firman Generator Brushes etc. Alternator Brushes |
This YAMAKATO Predator Generator Carbon Brush Assembly is perfect for anyone who owns a 5kw generator powered by GX390, GX340, or similar engines. It’s ideal for DIY repairs or routine maintenance to keep your generator running smoothly. |
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Generac 7109 Two Wire Home Standby Remote Start Kit for Generators |
This Generac 7109 Remote Start Kit is perfect for homeowners who want easy, remote control of their backup power. It’s especially great if you already have a transfer switch from another brand, saving you money and hassle. |
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Oil Pressure Switch 99236 099236 Fits generac Generator 9777-0 9777-1 9777-2 9777-3 9777-4 4000xl |
This oil pressure switch is perfect for Generac generator owners needing a reliable replacement. It fits models 9777-0 to 9777-4 and 4000XL with an 8 PSI rating and 1-pole design. |
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TURBOTUNITY AVR Regulator for 5-8KW Generac of Honda Clones Predator Champion Blackmax Generac Generators Powermate Duromax Firman Wen Etq 5000 5500 6500 7000 7500W 8000 8500 8750 9000 9500 |
This product is perfect for generator owners with 5-8kW Honda GX clones or similar models like Generac, Predator, or Champion needing a durable aluminum-shell AVR replacement. It works for rectangular or half-moon AVRs and fits brands like Firman, Wen, and Duromax with easy installation. |
Detailed Reviews
Expert-vetted and customer-approved, this guide highlights the top 10 Generac generator electrical parts for reliable performance. From AVR voltage regulators ensuring stable power to durable fuel gauges and easy-install maintenance kits, every pick boosts efficiency and longevity. Trusted brands like YAMAKATO, TURBOTUNITY, and Generac deliver precision-engineered solutions for seamless upgrades. Discover pro-tested parts that tackle any repair or enhancement—your generator’s peak performance starts here.
1. YAMAKATO 5000-9900 watt Generator AVR Rectifier for Predator Honda Champion Generac etc.Voltage Regulator AVR OEM 5~8kw 5000 5500 6000 6500 7000 7500 8000 8500 8750 9000 9500 338cc~459cc

Keep your generator running smoothly with this high-quality AVR Rectifier. It’s designed to power up a wide range of popular generator brands.
This voltage regulator is a direct replacement. It ensures your generator delivers stable power. Get your generator back to work fast.
It fits 5000 to 9900 watt generators. This includes brands like Predator, Honda, Champion, and Generac. It’s a reliable part for many models.
| Pros | Cons |
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Perfect For:
This AVR Rectifier is perfect for generator owners needing to replace faulty voltage regulators in 5,000–9,500 watt models. It works with Honda, Generac, Champion, Predator, and other brands, fitting both plastic and aluminum housings for easy upgrades.
Ready to Purchase?
2. Generac 6485 Scheduled Maintenance Kit for 20kW and 22kW Standby Generators with 999cc Engine Black

The Generac 6485 Maintenance Kit is made for standby home generators. It fits 20kW and 22kW models with 999cc engines. Comprehensive components ensure easy, effective upkeep.
Maintenance is simple every 200 hours or 2 years. Oil is not included—buy it separately for best results.
This kit includes a pre-cleaner, air filter, oil filter, and more. A reminder sticker helps track future service needs.
| Pros | Cons |
|---|---|
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Perfect For:
This kit is perfect for homeowners with Generac 20kW or 22kW standby generators needing regular maintenance. It includes all essential parts like filters, spark plugs, and tools to keep the 999cc engine running smoothly. Ideal for dusty environments where frequent upkeep matters. Oil must be bought separately.
Ready to Purchase?
3. WOTIAN Generator Avr Automatic Voltage Regulator Compatible with Honda Predator Champion Firman DuroMax Generator Parts 3500 4000 watt 2KW 3KW 3.5KW 4KW 30060-Y025110 Homelite 290440011 4375 4650

Keep your generator running smoothly with the WOTIAN Generator AVR. This automatic voltage regulator is designed to be a perfect fit for a wide range of popular generator brands, including Honda, Predator, Champion, and Firman, covering models from 2KW to 4KW.
Ensure stable power output with this essential generator part. It features a convenient voltage adjustment screw for fine-tuning your power needs and a plastic housing for durability. The package includes both the generator AVR and a carbon brush for easy replacement.
Easy to install. Reliable performance. Get yours today!
| Pros | Cons |
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Perfect For:
This WOTIAN Generator AVR is perfect for anyone with a 2kW to 4kW generator from Honda, Predator, Champion, Firman, or similar brands. It’s easy to install and adjusts voltage for reliable power output.
Ready to Purchase?
4. YAMAKATO 5~8kw Generator AVR for Predator Honda Champion Generac Antomatic Voltage Regulator 5000 5500 6000 6500 7000 7500 8000 8500 8750 9000 9500 338cc~459cc

The YAMAKATO 5~8kw Generator AVR is a reliable voltage regulator for your generator. It fits Predator, Honda, Champion, and Generac models. This AVR comes with an extra emergency-stop plug for added safety.
It works with 301cc to 459cc engines and 9hp to 13hp motors. Use it for generators with 5000 to 8000 watts of power.
| Pros | Cons |
|---|---|
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Perfect For:
This YAMAKATO AVR is perfect for anyone with a 5~8kw generator from brands like Predator, Honda, Champion, or Generac, especially if you need an emergency-stop plug feature. It’s designed for engines ranging from 301cc to 459cc and supports generators with running power from 5000 to 9500 watts.
Ready to Purchase?
5. Generator Fuel Gauge for Generac 0H9005 GP5500 GP6500 RS5500 RS7000E GP7500E RS8000E XT8000E XT8500EFI, 5500w 6500 6500w 7500 389cc OHV Portable Generator

fuel gauge fits Generac 5‑8 kW models. It is sturdy and durable. It shows fuel level clearly.
The display is easy to read. Install it in minutes.
| Pros | Cons |
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Perfect For:
This generator fuel gauge is perfect for Generac owners who want a quick and easy way to monitor their fuel levels. It’s a durable, direct replacement for many popular Generac models, making it simple to install and read at a glance.
Ready to Purchase?
6. Universal Generator Part -Generator Kit (Evolution-5W30) Replacement for 0J8478S – Complete Service kit – Enhance Optimal Performance – Longevity Model 0J932300SM 10 to 26KW

This kit includes air filter, 2-quart Generac 5W30 oil, spark plugs, and filters. It boosts generator performance and longevity. All parts work together for easy maintenance.
Designed for 2013–present 10kW–26kW Generac models, it ensures reliable engine protection. Customer support is ready to help if issues arise.
| Pros | Cons |
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Perfect For:
This product is perfect for generator owners with 10-26kW Generac Guardian Series or compatible models. It provides a complete service kit with oil, filters, and spark plugs to ensure optimal performance and longevity for their equipment.
Ready to Purchase?
7. YAMAKATO Predator 6500 8750 9000 Generator Carbon Brush Assembly OEM for Honda Champion 7000 8000 7500 9400 9500 5000 5500, Generac ETQ Powermate Firman Generator Brushes etc. Alternator Brushes

The YAMAKATO Predator 6500 8750 9000 Generator Carbon Brush Assembly is a must-have for your generator. It fits many popular brands like Honda, Champion, and Generac.
These OEM brushes work with 5kw generators and have copper terminals. They come in a set of 2 for easy replacement.
The mounting holes are 6mm and 26mm apart. They fit many models, from 5000 to 9500 watts. Note: These are bigger than 2kw brushes.
| Pros | Cons |
|---|---|
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Perfect For:
This YAMAKATO Predator Generator Carbon Brush Assembly is perfect for anyone who owns a 5kw generator powered by GX390, GX340, or similar engines. It’s ideal for DIY repairs or routine maintenance to keep your generator running smoothly.
Ready to Purchase?
8. Generac 7109 Two Wire Home Standby Remote Start Kit for Generators

Generac 7109 lets Generac generators work with other switch brands. It saves money by using existing switches. It offers easy remote start for power backup.
This kit works with air-cooled units and Evolution/Sync 2.0 controllers. It does not work with Nexus controllers.
Remote start is simple and reliable. It ensures seamless power backup without extra switches.
| Pros | Cons |
|---|---|
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Perfect For:
This Generac 7109 Remote Start Kit is perfect for homeowners who want easy, remote control of their backup power. It’s especially great if you already have a transfer switch from another brand, saving you money and hassle.
Ready to Purchase?
9. Oil Pressure Switch 99236 099236 Fits generac Generator 9777-0 9777-1 9777-2 9777-3 9777-4 4000xl

This Oil Pressure Switch fits Generac generators, pressure washers, and more. It has an 8 PSI pressure rating and a 1-pole design. The switch is about 2 inches long and replaces many part numbers.
Actual images show the product clearly. It works for models like 9777-0, 9777-1, and others.
| Pros | Cons |
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Perfect For:
This oil pressure switch is perfect for Generac generator owners needing a reliable replacement. It fits models 9777-0 to 9777-4 and 4000XL with an 8 PSI rating and 1-pole design.
Ready to Purchase?
10. TURBOTUNITY AVR Regulator for 5-8KW Generac of Honda Clones Predator Champion Blackmax Generac Generators Powermate Duromax Firman Wen Etq 5000 5500 6500 7000 7500W 8000 8500 8750 9000 9500

The TURBOTUNITY AVR Regulator is a high-quality replacement part for your generator. It’s designed for 5-8kW models, ensuring smooth and reliable performance.
This AVR fits many brands, including Honda clones, Generac, and more. Check mounting holes in the images to ensure a perfect fit. It works with rectangular and half-moon shaped AVRs.
Made with a durable aluminum shell, it includes a PT generator brush. It’s compatible with 5-9.5kW generators, making it a versatile choice for your needs.
| Pros | Cons |
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Perfect For:
This product is perfect for generator owners with 5-8kW Honda GX clones or similar models like Generac, Predator, or Champion needing a durable aluminum-shell AVR replacement. It works for rectangular or half-moon AVRs and fits brands like Firman, Wen, and Duromax with easy installation.
Ready to Purchase?
Buying Guide
Keep your Generac generator running strong with the right parts. This guide helps you choose the best electrical parts for reliability and performance.
Factors to Consider When Buying Generac Generator Electrical Parts:
– Compatibility: Ensure the part fits your generator model. Check wattage, engine size, and brand compatibility.
– Quality: Choose high-quality parts for durability and long-term performance. Look for OEM or trusted brands.
– Functionality: Match the part’s purpose to your needs. For example, AVRs stabilize power, while fuel gauges monitor levels.
– Ease of Installation: Pick parts that are easy to install to save time and effort.
– Safety Features: Look for parts with added safety, like emergency-stop plugs or oil pressure switches.
– Maintenance Needs: Consider parts that simplify routine care, such as maintenance kits or carbon brushes.
– Price and Value: Balance cost with quality. Reliable parts save money in the long run.
– Customer Support: Choose brands with good support for help with installation or issues.
Engaging Experience:
Finding the right parts keeps your generator ready for any situation. With this guide, you’ll make smart choices for dependable performance.