The Ultimate Guide to Choosing OEM Star 9 Spare Parts

When it comes time to repair or upgrade your ATV, one of the most important decisions you'll face is whether to use Original Equipment Manufacturer (OEM) parts or aftermarket alternatives. This choice affects not only your wallet but also your ATV's performance, reliability, and long-term value. At Carolina Cycle, we've been supplying quality parts to riders since , and we've seen firsthand how this decision impacts ATV owners over time.

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This comprehensive guide will help you understand the key differences between OEM and aftermarket ATV parts, with special attention to popular brands like Yamaha and Suzuki. We'll explore the advantages and potential drawbacks of each option, helping you make informed decisions for your specific situation.

Understanding OEM ATV Parts

OEM parts are manufactured either directly by your ATV's maker (Honda, Kawasaki, Suzuki, Yamaha, etc.) or by the same suppliers who provide components for the original assembly. These parts are identical to those that came on your machine when it was new.

What Makes OEM Parts Different?

The primary distinction of OEM parts is their exact match to your ATV's original specifications. When you purchase a genuine Yamaha or Suzuki ATV part, you're getting a component that was designed specifically for your model, built to the same standards, and made from the same materials as the original.

Key Benefits of OEM ATV Parts

1. Perfect Fitment Every Time

One of the most significant advantages of OEM parts is guaranteed fitment. These components are manufactured using the same specifications, tooling, and processes as the original parts on your ATV.

Real-world impact: When installing OEM parts, you'll never need to modify the part or your ATV to make things fit. This saves time during installation and prevents problems that could arise from imperfect fitment.

For example, a genuine Suzuki ATV clutch kit (-19B00) is manufactured to precise specifications, ensuring that every component works harmoniously with your Suzuki engine. The clutch plates, springs, and basket are designed as a system, with tolerances measured in thousandths of an inch.

2. Consistent Quality Control

Manufacturers like Yamaha and Suzuki have rigorous quality control standards for their OEM parts. Each component undergoes testing to ensure it meets the original design specifications.

Quality assurance processes typically include:

• Material composition verification
• Dimensional inspection
• Functional testing
• Durability simulation
• Batch sampling for statistical quality control

For instance, Yamaha's quality control for their brake pads (1UY-W-00-00) includes testing for friction coefficient consistency, heat resistance, noise levels, and wear patterns—ensuring they perform exactly as expected in all conditions.

3. Engineered System Integration

ATVs are complex machines with interconnected systems. OEM parts are designed with the entire vehicle in mind, ensuring that each component works harmoniously with all others.

This system integration is particularly important for parts that affect multiple systems, such as:

• Fuel injectors and engine management
• Transmission components
• Electrical system parts
• Suspension components

A genuine Suzuki CDI unit (-19B03) is programmed with specific ignition timing maps developed during thousands of hours of engine testing—something aftermarket manufacturers simply don't have access to.

4. Warranty Protection

Using OEM parts often preserves your ATV's manufacturer warranty. Many warranties specifically require the use of genuine parts for repairs and maintenance.

Warranty considerations:

• Most manufacturer warranties are void if damage is traced to aftermarket parts
• Some extended warranty plans require documentation of OEM part usage
• Dealer service departments generally guarantee repairs made with OEM parts

For Yamaha ATV owners, using genuine Yamaha parts ensures compliance with their Limited Warranty terms, protecting your investment for the full warranty period.

5. Longer Lifespan

OEM parts are typically engineered for optimal durability within the manufacturer's design parameters. While some aftermarket parts may claim extended lifespans, OEM components have undergone extensive testing to verify their durability claims.

A good example is the Suzuki ATV oil filter (-07J00). These filters use specific filter media with precisely calculated surface area and micron ratings to capture harmful particles while maintaining proper oil flow—specifications that directly impact engine longevity.

6. Consistent Availability

Manufacturers maintain parts inventories for models long after production ends. This ensures that you can find genuine parts for your ATV for many years to come.

Yamaha, for instance, maintains an extensive parts inventory system that can typically supply components for models up to 10-15 years old, ensuring long-term support for your investment.

Understanding Aftermarket ATV Parts

Aftermarket parts are manufactured by companies other than your ATV's original manufacturer. These range from budget-friendly direct replacements to high-performance upgrades with enhanced features.

Types of Aftermarket Parts

Not all aftermarket parts are created equal. They generally fall into several categories:

1. Direct OEM Replacements

These parts aim to replicate the OEM component at a lower price point. Quality varies significantly based on the manufacturer.

2. Performance Upgrades

These parts are designed to enhance performance beyond OEM specifications, often at the expense of other factors like noise levels or component lifespan.

3. Universal Fit Components

These generic parts are designed to work across multiple models and brands, often requiring modification for proper installation.

4. Budget Options

These low-cost alternatives prioritize price over quality, using cheaper materials and simplified designs.

Potential Advantages of Aftermarket Parts

1. Cost Savings

The most obvious benefit of aftermarket parts is lower price—often 20-50% less than OEM equivalents.

2. Availability

Popular aftermarket parts may be more readily available than OEM components, especially for older models or through local retailers.

3. Performance Options

Some aftermarket manufacturers specialize in performance enhancements that go beyond OEM specifications.

4. Customization

The aftermarket often offers aesthetic options and customizations not available from OEM suppliers.

Common Drawbacks of Aftermarket Parts

1. Inconsistent Quality

The aftermarket encompasses everything from premium components to bargain-basement knockoffs, making it difficult to assess quality.

Quality variations may include:

• Inconsistent materials (inferior metals, plastics, or rubber compounds)
• Manufacturing defects
• Poor quality control
• Inadequate testing

2. Fitment Issues

Many ATV owners discover that aftermarket parts require modification, fabrication, or "making it work" during installation.

Common fitment problems include:

• Bolt holes that don't align perfectly
• Components that are slightly too large or small
• Connections that don't mate properly
• Parts that technically fit but cause clearance issues with other components

For example, an aftermarket radiator for a Yamaha Grizzly might physically mount in place, but could have slightly different hose connection angles, requiring hose modifications or causing stress on connections that eventually leads to leaks.

3. Potential Warranty Complications

Using aftermarket parts can complicate warranty claims or void manufacturer warranties entirely.

4. Unexpected Compatibility Issues

Even when aftermarket parts physically fit, they may not function properly with other systems. This is particularly common with electronic components, fuel system parts, and engine management-related items.

A common example is aftermarket electronic CDI modules for Suzuki ATVs. While they may connect properly, they often lack the sophisticated timing maps and fail-safes of OEM units, leading to performance issues that are difficult to diagnose.

5. Documentation and Support Limitations

Aftermarket parts typically come with limited installation instructions and technical support compared to OEM components.

Making the Right Choice: When to Choose OEM vs. Aftermarket

The best choice depends on several factors unique to your situation. Here's a practical framework for deciding:

When OEM Parts Are Usually the Better Choice

Critical Systems and Safety Components

For systems directly impacting safety or reliability, OEM parts provide peace of mind and consistent performance:

• Brake system components
• Steering and suspension parts
• Fuel delivery system
• Electrical system components
• Engine internal components

Examples of critical OEM parts worth the investment:

• Yamaha brake master cylinders (4XE-W-00-00)
• Suzuki ATV CV joints and axles (-31G00)
• Kawasaki fuel pump assemblies (-)
• Honda ignition components (-HN1-003)

Complex Electronic Components

Modern ATVs rely on sophisticated electronics that require precise calibration with other systems:

• Engine Control Units (ECUs)
• Sensors (oxygen, temperature, position)
• Ignition modules
• Fuel injection components
• Digital display units

The Yamaha ECU (2S2-A-10-00) contains proprietary programming that controls everything from fuel mapping to engine protection parameters—specifications that aftermarket manufacturers can only approximate.

When Under Warranty

If your ATV is still covered by manufacturer warranty, using OEM parts ensures you maintain protection.

For Resale Value Preservation

Using OEM parts and keeping documentation can significantly enhance resale value, especially for premium models like the Yamaha Grizzly or Suzuki KingQuad.

Long-Term Ownership

If you plan to keep your ATV for many years, the superior durability and perfect integration of OEM parts usually outweigh the higher initial cost.

When Aftermarket Parts Might Make Sense

Non-Critical Accessories

For accessories and aesthetic enhancements, aftermarket options provide variety and customization:

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• Racks and cargo accessories
• Windshields and body enhancements
• Lighting accessories
• Winches and plows

Budget Constraints on Older Machines

For ATVs well past warranty and nearing the end of their service life, more affordable aftermarket parts may be practical for basic repairs.

Performance Specialization

If you're seeking performance beyond stock specifications and understand the potential trade-offs, specialized aftermarket manufacturers offer options that OEM catalogs don't provide.

Brand-Specific Considerations

Yamaha ATV Parts Quality

Yamaha has built a reputation for exceptional engineering and parts quality. Their OEM ATV components feature several standout characteristics:

Engineering Excellence

Yamaha's engineering process integrates advanced computer modeling, extensive real-world testing, and continuous refinement. This results in parts that often exceed minimum requirements for durability.

The Yamaha Ultramatic continuously variable transmission (CVT) system, for example, incorporates unique componentry that has proven remarkably durable in field use. The OEM drive belt (5KM--01-00) features a specific rubber compound and reinforcement structure that typically outlasts aftermarket alternatives by a significant margin.

Materials Science Advantage

Yamaha's metallurgy and materials selection are particularly noteworthy. Their:

• Aluminum alloys balance strength and weight
• Bearing surfaces incorporate precise hardening processes
• Rubber compounds are formulated for specific applications

Quality Control Consistency

Yamaha employs strict quality control protocols, including:

• Multi-stage inspection processes
• Batch testing and sampling
• Functional verification
• Long-term durability simulation

This results in remarkably consistent part quality across production runs—something independent tests have verified repeatedly when comparing OEM to aftermarket options.

Suzuki ATV OEM Advantages

Suzuki's approach to ATV parts manufacturing yields several distinct advantages:

Precision Manufacturing

Suzuki's manufacturing precision is evident in the tight tolerances of their engine components. Their:

• Cylinder boring and honing techniques produce exceptionally round and straight cylinders
• Bearing journals maintain precise dimensional consistency
• Gear teeth are cut with exacting profiles for smooth operation and noise reduction

This precision is particularly evident in components like the Suzuki KingQuad's transmission assemblies, where gear engagement and shifting quality depend on tolerances measured in thousandths of an inch.

Corrosion Resistance

Suzuki's surface treatments and material selection provide superior corrosion resistance—particularly important for ATVs used in challenging environments:

• Fastener coatings that resist galvanic corrosion
• Frame components with multi-stage paint processes
• Electrical connectors with environmental sealing

System Integration

Suzuki engineers components as complete systems rather than individual parts. This holistic approach ensures that:

• Cooling systems maintain optimal temperatures across the operating range
• Electrical components communicate properly within defined parameters
• Fuel delivery precisely matches engine requirements

Real-World Performance Differences

Beyond specifications, how do OEM and aftermarket parts compare in actual use? Our experience servicing thousands of ATVs has revealed consistent patterns:

Durability Testing

In controlled testing environments:

• OEM drive belts typically last 1.5-2x longer than budget aftermarket alternatives
• Genuine brake pads maintain consistent stopping power throughout their service life, while aftermarket options often show performance degradation
• OEM electrical components demonstrate superior heat resistance and moisture tolerance

Customer Feedback

Our customers consistently report:

• Fewer fitment issues with OEM parts
• Higher satisfaction with shifting quality and transmission performance using OEM components
• More consistent engine performance with OEM intake and fuel system parts

Cost of Ownership Analysis

When factoring in replacement frequency, installation complications, and system effects:

• Higher-priced OEM components often prove more economical over the full ownership period
• The performance consistency of OEM parts reduces diagnostic time and costs
• The simplicity of perfect-fit installation reduces labor costs for professional service

Making an Informed Decision

To determine the best choice for your specific situation, consider these questions:

1. How long do you plan to keep your ATV?
2. Is it currently under warranty?
3. What is the criticality of the part to safety and reliability?
4. What is your skill level for installation and potential troubleshooting?
5. What is your budget for both immediate and potential future costs?

Conclusion: Finding Your Balance

While we at Carolina Cycle specialize in OEM parts for Honda, Kawasaki, Suzuki, and Yamaha ATVs, we understand that every rider's situation is unique. The ideal approach often involves strategic choices—using OEM parts for critical systems and considering quality aftermarket options for accessories and customization.

The true value of any part isn't measured solely by its purchase price, but by its performance, reliability, and integration with your ATV's systems over time. By understanding the differences between OEM and aftermarket options, you can make choices that maximize both performance and value for your specific needs.

Whether you're maintaining a workhorse farm ATV, preparing a sport quad for competition, or keeping your trail machine in top condition, we're here to help you navigate the parts landscape. Our decades of experience with these machines gives us unique insight into which components demand OEM quality and where aftermarket alternatives might serve you well.

Remember, the right part isn't always the cheapest or the most expensive—it's the one that best meets your specific needs, riding style, and long-term ownership plans.

Aftermarket parts are the ones that are not made by the original vehicle manufacturer which means they are made by suppliers. If any customer tells you that he is not looking for third party parts or off-market means, then he is actually referring to the aftermarket parts. If you are looking to buy a new part and at the same time save money, then you can go for aftermarket markets. They come as a direct replacement for the OEM parts. These parts work best if you want to save money. You might have a question - “Does it really matter as to who makes them”? For some it does, and for others, it does not. Most people think that the quality of aftermarket parts is very less when compared to the original ones. And that’s the reason they are sold cheap. But, recently, the trends have changed. The quality of these parts has improved and they turn out to be better than OEM parts. 

OEM, on the other hand, stands for Original Equipment Manufacturer which means they are made directly by the manufacturer of the vehicle. They are made particularly for the specific year and model. However, they cost more when compared to aftermarket parts. 

1. What is the meaning of OEM parts?

OEM stands for Original Equipment Manufacturer. These parts are made directly by the manufacturer (ie car makers) and not by third parties like suppliers or dealers.

2. Is OEM the same as original?

OEM parts are specifically designed for the original products whereas the aftermarket refers to the products that are made as a replacement by a third party.

3. Are OEM parts better?

Aftermarket parts are equal to or often better quality when compared to OEM parts at a affordable price. OEM parts more expensive and are often backed with a 1-year warranty and many aftermarket parts have good warranties too. If you are looking for better quality parts at an affordable price, then the aftermarket parts are the best.

4. How do I know a part is OEM?

You can easily identify a part is OEM or aftermarket by the part number and company name. Also the finishes, the different kinds of plastic used and the fonts can indicate some minor difference.

5. What is an aftermarket product?

Aftermarket parts are not sourced from the original manufacturer (ie the car maker), but they match exactly and are used as direct replacements for the original ones.

6. Are aftermarket parts good?

A number of reputed companies and third party suppliers design aftermarket parts that function the same or better than the OEM parts. In fact, high end aftermarket parts can yield significantly better performance on a vehicle than original components.

7. Does the aftermarket part mean used?

No, aftermarket parts are not used parts. They are brand new and come with a factory warranty. They are made by companies specialized in manufacturing automotive components.

8. What is an aftermarket price?

As aftermarket parts are cost-effective, they are utilized by insurance companies and body shops for repairing the vehicle after an accident has occurred. When these companies or body shops use aftermarket parts, they can save a lot of money, thereby saving the money of the insurance company and as well as the consumer's money. 

9. Will it void my car manufacturer warranty if I install aftermarket parts?

Govt. regulations mandate that when you replace a component with an aftermarket part, the full vehicle warranty must still be valid. Any other repairs completely unrelated to the replaced aftermarket part must still be honored by original warranty.

10. Will my car dealership install aftermarket parts?

They can at their discretion, but generally they will only install oem parts supplied from their vendors (often at much higher costs) due to their supply chain restrictions.

11. Where can I get my aftermarket parts installed?

If you decide to install an aftermarket part, ensure that you have a reliable mechanic in your area who can install them. They generally take exactly the same amount of effort to install as OEM parts. You can also find some mobile car mechanics in your area who specialize in customization.

12. What is the difference between the aftermarket and the used parts?

Aftermarket Parts are new parts too, and come with factory warranty. Used OEM parts may be available at a lower price, but often it is difficult to predict how soon they may fail. New aftermarket parts are always better to buy vs previously used parts, because used ones do not come with warranty and their quality can range from good to terrible.

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