1. Electrical Components ATV Parts For Sale
  2. sku: 24534678217722892
  3. DEVOTEES 4BD-85540-10-00/SZ628269EZ

M.A.G-DEVOTEES Cdi Box Atv 4BD-85540-10-00/SZ628269EZ 250FW

fits model: Yfb250, Yfm250x, 250, Timberwolf, Bear, Tracker. make: Yamaha.

4bd-85540-10-00 M.a.g-devotees 4bd-85540-10-00/sz628269ez Fit For Yamaha Timberwolf 250 Yfb250 250fw Bear Tracker Yfm250x Cdi Box Atv

( Brand: M.a.g-devotees ), ( Manufacturer Part Number: 4BD-85540-10-00/SZ628269EZ ), ( Part Type: Box ), ( Country Of Origin: United States ), ( Replaces Parts Number: 4bd-85540-10-00/z021-0045n/0451018/0452187 ), ( Warranty: 1 Year ), ( Modified Item: No )

Review M.A.G-DEVOTEES 4bd-85540-10-00/sz628269ez Fit Yamaha Cdi Box Atv fits TIMBERWOLF BEAR TRACKER YFB250 YFM250X 250

The **M.A.G. Devotees 4BD-85540-10-00 (Part #: sz628269ez)** is a high-performance, factory-specification **CDI (Capacitor Discharge Ignition) box** meticulously engineered to deliver unmatched power, reliability, and longevity for Yamaha s legendary **TimberWolf 250 YFB250, YF250, YFM250X, and Bear Tracker** ATVs. Designed with precision and built to exceed OEM standards, this CDI box is a direct replacement for the stock unit, ensuring seamless integration while significantly enhancing ignition performance. Crafted from durable, high-grade materials, it features a robust, corrosion-resistant housing that safeguards internal components from the harshest off-road conditions, including dust, moisture, and extreme temperatures. Inside, the unit houses a **high-energy ignition coil** paired with a **precision-tuned capacitor**, delivering a powerful, consistent spark that maximizes fuel efficiency, reduces fouling, and extends the life of your engine s critical components. The **4BD-85540-10-00** is compatible with Yamaha s **250cc four-stroke engines**, providing the optimal timing and voltage required for peak performance, whether you're tackling rugged trails, navigating rocky terrain, or pushing your ATV to its limits in competitive riding scenarios. This CDI box is not just a replacement part it s an upgrade that ensures your Yamaha s engine runs smoother, starts more reliably, and maintains its power output over thousands of miles. Whether you're a weekend warrior, a professional rider, or someone who demands the best from their off-road machine, the M.A.G. Devotees CDI box is the ideal choice for those who refuse to compromise on performance, durability, or dependability. Built with the same attention to detail as Yamaha s original equipment, this aftermarket solution bridges the gap between stock reliability and high-performance tuning, making it a must-have for any serious ATV enthusiast.

### Pros and Cons of buying a MAG-Devotees 4BD-85540-10-00/SZ628269EZ CDI Box for Yamaha TimberWolf 250/YFB250/YFM250X ATVs

#### **Pros:**

1. **Compatibility:** This CDI box is specifically designed for Yamaha TimberWolf 250, YFB250, YFM250X, and Bear Tracker YFB250/YFM250X models. It ensures a direct fit without major modifications, reducing the risk of compatibility issues.

2. **Reliability:** MAG-Devotees is a well-known brand in the ATV and off-road power equipment industry, known for producing high-quality, durable components. Their CDI boxes are often praised for their longevity and consistent performance.

3. **Performance Enhancement:** A high-quality CDI box can improve ignition timing, spark consistency, and overall engine performance. This can lead to better throttle response, smoother operation, and potentially increased power output, especially if the original CDI was worn out or malfunctioning.

4. **Ease of Installation:** The CDI box is designed to be a drop-in replacement, meaning it can often be installed without extensive modifications to the wiring or mounting. This makes it a convenient upgrade for DIY enthusiasts or mechanics.

5. **Compatibility with Modifications:** If you plan to modify your ATV (e.g., installing a bigger carburetor, performance air filter, or exhaust), a reliable CDI box ensures that the ignition system can keep up with the increased demands of the engine.

6. **Cost-Effective:** Replacing a faulty or aging CDI box is often more cost-effective than overhauling the entire ignition system or dealing with persistent electrical issues. This part is typically priced affordably compared to the potential cost of engine damage from poor ignition.

7. **Aftermarket Support:** MAG-Devotees products are widely available through aftermarket dealers, online retailers, and forums. This means you can easily find replacement parts, wiring diagrams, or troubleshooting guides if needed.

---

#### **Cons:**

1. **Potential Overkill for Stock Engines:** If your Yamaha ATV is running stock with no modifications, the benefits of upgrading the CDI box may be minimal. The stock CDI might already be adequate for daily use, and upgrading could be unnecessary unless you're experiencing specific ignition-related issues.

2. **Wiring and Grounding Concerns:** While the CDI box is designed for compatibility, improper grounding or wiring can still cause issues. If the installation isn t done correctly, it could lead to intermittent spark problems or even damage to the new CDI box.

3. **Limited Customization:** Unlike some high-performance CDI boxes, this particular model may not offer extensive tunability or advanced features (e.g., adjustable timing or digital diagnostics). It s primarily a direct replacement with standard performance characteristics.

4. **Quality Variability:** While MAG-Devotees is reputable, there have been occasional reports of counterfeit or lower-quality replicas entering the market. Always purchase from authorized dealers or trusted sellers to avoid receiving a subpar product.

5. **No Warranty on Some Retailers:** Depending on where you buy the CDI box, warranties may vary. Some online marketplaces or third-party sellers might not offer warranties, leaving you without recourse if the part fails prematurely.

6. **Learning Curve for Installation:** If you re not familiar with ATV electrical systems, installing a CDI box could be challenging. Incorrect wiring or mounting can lead to poor performance or even damage to the engine s electrical components.

7. **Potential for False Diagnostics:** If your ATV has other underlying issues (e.g., fuel system problems, vacuum leaks, or worn spark plugs), upgrading the CDI box alone may not resolve performance problems. It s important to diagnose the root cause of any engine issues.

---

### **Conclusion:**

The MAG-Devotees 4BD-85540-10-00/SZ628269EZ CDI box is a solid choice for Yamaha TimberWolf 250/YFB250/YFM250X owners who are experiencing ignition-related problems or looking to upgrade their ATV s performance. Its compatibility, reliability, and ease of installation make it a practical option for both stock and lightly modified ATVs. However, if your ATV is running smoothly without issues, the upgrade may not provide noticeable benefits.

For those planning to push their ATV s performance (e.g., with carburetor upgrades or exhaust modifications), this CDI box is a worthwhile investment to ensure the ignition system can handle the increased load. Always ensure proper installation and grounding to avoid complications.

---

### **Recommendation:** - **Buy it if:**

- You re experiencing misfires, poor starting, or inconsistent spark in your Yamaha ATV.

- You plan to modify your ATV (e.g., bigger carb, performance exhaust) and want a reliable CDI box to support the changes.

- You prefer a direct replacement with minimal hassle and good aftermarket support.

- You re comfortable with basic electrical work or have a mechanic install it for you.

- **Avoid it if:**

- Your ATV is running fine with no ignition issues, and you don t plan to modify it.

- You re on a tight budget and the original CDI is still functioning adequately.

- You suspect other issues (e.g., fuel system problems) are causing performance issues, and you haven t diagnosed them properly.

- You re purchasing from an untrusted seller with no warranty or return policy.

**Final Suggestion:** If you decide to upgrade, purchase from an authorized dealer or a reputable online retailer (e.g., ATV Parts Pro, MAG-Devotees official site, or trusted marketplaces like Amazon or eBay with verified sellers). Follow the installation instructions carefully, and consider consulting with an ATV mechanic if you re unsure about wiring or electrical connections.

Details:

Item Specifics: Country of Origin USA, Replaces Parts Number 4BD-85540-10-00/Z021-0045N/0451018/0452187, Manufacturer Part 4BD-85540-10-00/SZ628269EZ, Brand M.A.G-Devotees, Warranty 1 Year, Type CDI Box, Modified No. If you do not wish to wait for a replacement, please repurchase the item. Aftermarket parts CDI Box After-sales parts-CDI. Fit For Yamaha Timberwolf 250 YFB250 250FW Bear Tracker YFM250X CDI Box ATV.

1 x CDI Box as images display. Excellent Delivery. Replace OE Part Number: 4BD-85540-10-00 Z021-0045N 0451018 0452187 27-15408, 15-408 4BD-85540-10- Parcel included.

part #: 4bd-85540-10-00 price

  • $9.86

specifications electricacompone:

  • for models: Yfb250, Yfm250x, 250, Timberwolf, Bear, Tracker
  • for makes: Yamaha
  • brand: M.a.g-devotees
  • mpn: 4bd-85540-10-00/sz628269ez
  • part type: Box
  • country of origin: United States
  • replaces parts number: 4bd-85540-10-00/z021-0045n/0451018/0452187
  • warranty: 1 Year
  • modified item: No

returns electricacompone:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

seller electricacompone:

  • rating: 99.8%
  • city: Chino, California
  • # reviews: 652

shipping electricacompone:

  • class: Standard, Expedited
  • carrier: UPS
  • service: Standard, UPS 2nd Day Air
  • cost: $0.00
  • type: Fixed
  • transit: 3-8 Days

offer electricacompone:

  • sold: 0
  • options: Ship-to-home
  • best offers: True
  • availability: In Stock
  • started: April 14, 2026

general electricacompone:

  • ATV, Side-by-Side UTV Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components
  • condition: New

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for models: yfb250, yfm250x, 250, timberwolf, bear, tracker, for makes: yamaha, part type: box, country of origin: united states, replaces parts number: 4bd-85540-10-00/z021-0045n/0451018/0452187, warranty: 1 year, modified item: no,
category: atv parts > atv, side-by-side utv parts accessories > electrical ignition components, sku: 24534678217722892,
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