What is an OEM Generac Part?

What is an OEM Generac Part?

Posted by Generator Magic on 2nd Apr 2026

Owning and maintaining a generator is the key to powering through any emergency. But how do you know what parts to buy when it’s time for repairs? What makes an OEM Generac part better than its aftermarket equivalent? We’ll answer all these questions and more, so you’ll be confident in your replacement parts.   

What Does OEM Stand For?

Generac 0J8478S Air FilterOEM stands for “original equipment manufacturer.” The term is used in the manufacturing industry to describe companies that produce singular components or products that are then sold to other businesses to be integrated into their own designs. OEM replacement parts are specially designed to exactly match certain generator models, guaranteeing compatibility and reliable operation.

During initial production, OEM generator parts are typically sold business-to-business. After that, a value-added reseller will then sell the finished product. OEM Generac parts, on the other hand, are available for purchase only from authorized sellers, making buying a replacement piece all the more accessible. 

What is the Difference Between OEM Replacement Parts and Aftermarket Replacement Parts?

You’ll notice that, when it comes to replacing components of your generator, you have two retail options: OEM generator parts, which are made by your unit’s original manufacturer, and aftermarket parts, which are crafted by independent, alternative companies. While aftermarket pieces are usually about 20 to 50% cheaper, the fit, quality, and function vary widely. Purchasing a budget-friendly generator replacement part may sound like a good idea at first, but it’s not worth the potential pitfalls.

Why Should You Buy Genuine OEM Generator Parts? 

When an OEM generator part from your equipment needs to be replaced, it can be tempting to grab the first generic piece you can find, and while this may feel like a good, budget-friendly move, it puts your entire generator at risk. Plugging in parts that weren’t made by the same manufacturer often leads to poor performance, safety hazards, and unexpected breakdowns. 

Genuine OEM replacement parts, on the other hand, ensure your generator can continue to run exactly how it was meant to. OEM Generac parts undergo rigorous testing to meet strict standards and provide a flawless, custom fit, eliminating potential issues such as improper sealing, noise, or vibration. Many manufacturers will also void a unit’s warranty if third-party components are installed and cause damage, ruining your future chances at coverage. 

The 5 Benefits of Using an OEM Replacement Part: 

  1. Reliability: Since OEM replacement parts are designed for the unique specifications of your model, they help your unit run more efficiently, simplifying future generator maintenance.
  2. Precise fit: Every OEM Generac part is cut and sized to the exact dimensions needed, allowing for a seamless and accessible installation.
  3. Quality: OEM generator parts are crafted from high-quality materials and built to last.
  4. Safety: OEM Generac parts are required to adhere to strict safety standards, allowing your equipment to operate efficiently, smoothly, and without risk.
  5. Resale value: Generators that only rely on OEM replacement parts hold their value better, reassuring future buyers that the asset was properly cared for and will continue to run.

What Are the Most Common OEM Replacement Parts to Buy? 

Generac 0H7957 Spark PlugGenerac generators may be complex works of machinery, but you don’t need to be a master mechanic to understand how they work. Gaining a baseline understanding of what the most frequently replaceable OEM generator parts are will help you catch issues before they cause lasting damage. The most common OEM replacement parts we see bought over and over are the ones where exact fit and reliability are most crucial. 

Popular OEM Replacement Parts for Generators:

  • Air and oil filters: Over time, the air filter, responsible for stopping particles from getting inside the engine, and the oil filter, charged with removing contaminants from the oil and keeping internal components lubricated, get clogged and become less effective.
    Spark plugs: When left alone too long, spark plugs can get covered in carbon deposits, weakening the spark and preventing your generator from fully starting.
  • Control panels: Tasked with monitoring the performance of your unit, managing the automatic transfer switch, and informing the engine when to turn on and off, the control panel provides critical information. If an error code pops up on the display or the system fails to start, it’s time to replace the control panel with a new OEM generator part.
  • Fuel system parts: If the fuel filter or carburetor clogs or starts to wear out, it will restrict the fuel flow, causing the engine to stall or sputter out.
  • Transfer switches: Responsible for connecting your home to backup power during times of disruption, the transfer switches prevent dangerous backfeeding and make the entire process hassle-free. If these components break, it could lead to severe safety hazards for your operators and home. 

How to Find the Correct OEM Generac Part for Your Generator 

Understanding the importance of finding a compatible OEM Generac part for your generator is one thing; successfully identifying one is another. Start by locating your unit’s ID tag by either lifting the top cover of your system or searching for the tag or sticker on your portable equipment. The model number and serial number will help ensure the replacement OEM generator part fits like a glove.

Once those numbers are found, you can look up your model through an official Generac resource to guarantee authenticity. If you don’t see the specific OEM Generac part on our page, or you’re not completely sure, you can always contact us with our “what part do I need form” for additional help. 

Where’s the Best Place to Purchase OEM Generac Parts?

Generac 0D86150SRV 12 Kw & 15 Kw 4000 Series Air Cooled Controller PcbIf you own a Generac generator, you’ll want to secure a trustworthy seller for future OEM replacement parts. While shopping, the manufacturer’s dedicated portal is an excellent place to start, authorized distributors like Generator Magic carry over 100,000 genuine OEM generator parts and more than likely have exactly the piece you’re searching for. With a website that displays real-time inventory, fast and flexible shipping, and expert customer support, we offer the kind of care and quality you deserve. 

Investing in genuine OEM Generac parts is the best way to ensure your equipment remains in top condition and ready for any form of disruption. Now that you know everything there is to know about OEM generator parts, you’re ready to browse our online warehouse stock and find the right fit for your system today.