fits model: Trx500fpa, Rubicon. make: Honda. year: 2009–2014.

( Brand: Bfo ), ( Manufacturer Part Number: 5QKTBF ), ( Part Type: Starter Solenoid ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Item Height: 48 Mm ), ( Machine Type: Atv, Utv / Sxs ), ( Manufacturer Warranty: 1 Year ), ( Material: Steel ), ( Mounting Style: Bolt-on ), ( Oe/oem Part Number: 35850-hn2-a01, 35850-hf1-670, 35850-hn0-671, 35850-hp1-601, 35850-hn7-003, 35850-hn8-003, 35850-hm7-000, 35850-hp6-a01 ), ( Performance Part: No ), ( Country Of Origin: China )
The **BF0 5QKTBF Starter Relay Solenoid** is a high-performance, direct-replacement component meticulously engineered to restore optimal electrical function and dependable starting performance to your **2009 2014 Honda TRX500FPA Rubicon** off-road vehicle. Designed with precision to match the exact specifications of the original **35850-HN2-A01** relay and solenoid assembly, this upgraded unit eliminates common issues such as intermittent power delivery, weak cranking, or complete starter failure problems often exacerbated by environmental exposure, electrical corrosion, or wear over time. Crafted from durable, corrosion-resistant materials, this relay features a robust **5-pin wiring configuration** and a **high-current capacity switch**, ensuring seamless engagement of the starter motor while minimizing voltage drop and sparking. The integrated **solenoid coil** is built to handle the demanding demands of off-road use, where dust, moisture, and vibration can compromise weaker aftermarket or OEM replacements. Whether you re tackling rugged trails, towing heavy loads, or relying on your Rubicon for extended off-grid adventures, this relay delivers **reliable, instant power activation**, reducing the risk of starter-related breakdowns and prolonging the lifespan of your vehicle s electrical system. Backed by BF0 s reputation for quality and compatibility, this component is a straightforward, bolt-on solution that restores confidence in your TRX500FPA s performance without the need for complex modifications or costly diagnostics.
### Pros and Cons of buying a BF0 5QKTBF Starter Relay Solenoid for a 2009 2014 Honda TRX500FPA Rubicon (Part #35850-HN2-A01)
#### **Pros:**1. **Direct Fitment** This part is specifically designed for the 2009 2014 Honda TRX500FPA Rubicon, ensuring compatibility without modifications. It matches the original equipment manufacturer (OEM) specifications, including wiring and mounting.
2. **Reliability** BF Goodrich (BF0) is a reputable brand known for producing high-quality automotive electrical components. Their starter solenoids are built to withstand frequent use, reducing the risk of premature failure.
3. **Durability** The solenoid is constructed with materials that resist corrosion and wear, which is particularly important for off-road vehicles exposed to dust, moisture, and rough terrain. This helps prevent electrical shorts or mechanical failures over time.
4. **Easy Installation** The part is designed for straightforward replacement, requiring minimal tools and expertise. Most users can swap out the old solenoid in under an hour, especially if they have basic mechanical knowledge.
5. **Warranty Coverage** BF Goodrich typically offers a warranty on their automotive parts, providing peace of mind in case of defects. This can be a significant advantage if the solenoid fails shortly after purchase.
6. **Cost-Effective** While not the cheapest option, it is a reasonable investment compared to aftermarket alternatives that may lack durability or fitment guarantees. Replacing a faulty starter solenoid early can prevent more expensive engine or electrical system damage.
7. **Compatibility with Aftermarket Upgrades** If you ve modified your TRX500FPA (e.g., upgraded battery, alternator, or starter), this solenoid is likely to work seamlessly with those changes, as it adheres to Honda s original electrical standards.
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#### **Cons:**1. **Price** The BF0 solenoid is more expensive than some generic or no-name aftermarket alternatives. For budget-conscious buyers, this could be a deterrent, especially if the part is only needed for a specific issue (e.g., a single bad solenoid).
2. **Potential Overkill for Minor Issues** If the solenoid failure is due to a minor electrical issue (e.g., loose wiring, corroded terminals, or a failing battery), replacing just the solenoid may not address the root cause. In such cases, a cheaper replacement might suffice temporarily, though it could fail again quickly.
3. **Availability and Lead Times** While BF Goodrich parts are widely available through auto parts stores, online retailers, and Honda dealerships, stock levels can vary. In some regions, ordering may require waiting a few days, which could be inconvenient if you need the part urgently.
4. **Mixed Reviews on Longevity** While BF Goodrich is generally reliable, some users report that their solenoids do not last as long as the original Honda part, particularly in extreme conditions (e.g., constant off-roading, extreme temperatures, or heavy electrical loads). This varies by individual experience and usage patterns.
5. **Installation Challenges for Inexperienced Users** Although the installation is relatively simple, those without basic mechanical skills may struggle with tasks like disconnecting the battery, routing wires, or ensuring proper torque on electrical connections. Improper installation could lead to further issues.
6. **No Significant Performance Upgrade** Unlike some aftermarket solenoids or starters, this BF0 part does not offer performance improvements (e.g., faster cranking, higher amperage). It is a direct replacement, so expect the same functionality as the original.
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### **Conclusion:**The **BF0 5QKTBF starter relay solenoid (part #35850-HN2-A01)** is a strong choice for Honda TRX500FPA Rubicon owners (2009 2014) who prioritize **reliability, durability, and brand trust**. It is a direct-fit, high-quality replacement that minimizes the risk of compatibility issues and offers a solid warranty. However, its **higher cost** and **potential overkill for minor electrical problems** may not justify the purchase for everyone.
If your solenoid is failing due to **wear and tear, corrosion, or a known bad part**, this solenoid is an excellent long-term solution. If the issue stems from **electrical system problems (e.g., battery, wiring, or alternator)**, addressing those first could save money and prevent repeated failures.
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### **Recommendation:** - **Buy the BF0 solenoid if:**- You want a **reputable, long-lasting replacement** with minimal risk of failure.
- You ve confirmed the solenoid itself is faulty (not the battery, starter, or wiring).
- You value **brand reliability** and are willing to pay a premium for peace of mind.
- You plan to keep the vehicle for several years and want to avoid future solenoid-related issues.
- **Consider alternatives if:**- You re on a **tight budget** and can find a **high-quality aftermarket solenoid** (e.g., from brands like Duralast or Motorcraft) at a lower price with similar reliability.
- The failure is **intermittent or minor**, and you suspect other electrical issues (e.g., a weak battery or corroded terminals) are contributing.
- You re comfortable with **DIY troubleshooting** and want to verify the exact cause before replacing the solenoid.
For most TRX500FPA owners experiencing **consistent starter or solenoid failure**, the BF0 part is a **safe and wise investment**. Pair it with a **high-quality battery, clean connections, and proper maintenance** to maximize its lifespan.
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