fits make: Harley, Davidson. year: 2004–2005.

( Brand: Standard Motor Products ), ( Manufacturer Part Number: MN/W0Y5 ), ( Compatible Year: 2005 2004 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxdi Dyna Super Glide ), ( Bundle Description: 1 Pc Genuine Standard Motor Intake Air Temperature Sensor ), ( Type: Intake Air Temperature Sensor ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )
The **Standard Motor MN/W0Y5 Intake Air Temperature Sensor** is a precision-engineered component designed exclusively for the **2004 2005 Harley-Davidson Ultra American (UA)** series, ensuring optimal performance and reliability for this iconic cruiser. This high-quality sensor plays a critical role in the engine s fuel injection system by accurately measuring the temperature of the incoming air before it enters the intake manifold. By providing real-time data to the engine control module (ECM), it enables precise fuel-air mixture adjustments, enhancing throttle response, power delivery, and overall engine efficiency especially under varying environmental conditions. Crafted from durable materials, this sensor is built to withstand the demanding operating temperatures and mechanical stresses of a high-performance V2 engine, delivering consistent readings even in extreme climates. Its robust construction, featuring a sealed ceramic or metal housing and a high-precision thermistor element, ensures long-term durability and resistance to corrosion, oil contamination, or electrical interference. Whether cruising on open highways or navigating stop-and-go city traffic, this sensor helps maintain peak engine performance, fuel economy, and emissions compliance. Ideal for both original equipment replacement and aftermarket upgrades, the **MN/W0Y5** is a direct-fit solution that restores factory specifications, ensuring seamless integration with the UA s electronic systems. For riders who demand precision and dependability, this sensor is an essential component for preserving the integrity of their Harley s performance and longevity.
**Pros and Cons of Buying a Standard Motor MN/W0Y5 Intake Air Temperature Sensor for a 2004-2005 Harley-Davidson ULTRA AMERICAN (UA)**
### **Pros:**1. **Direct Compatibility** The MN/W0Y5 sensor is specifically designed for the 2004-2005 Harley-Davidson UA, ensuring a proper fit without modifications. This reduces the risk of installation errors or improper sealing, which could lead to air leaks or sensor misreadings.
2. **OEM Quality** Purchasing from a reputable manufacturer (such as Standard Motor or an authorized dealer) ensures that the sensor meets Harley-Davidson s original specifications. This means it should perform reliably and last as long as the factory unit, typically around 50,000 to 100,000 miles with proper maintenance.
3. **Accurate Engine Performance** The intake air temperature (IAT) sensor monitors the temperature of the air entering the engine, which is critical for the fuel injection system. A faulty sensor can lead to incorrect air-fuel mixtures, reduced power, poor fuel economy, or even engine stalling. Replacing it with a known-good unit restores proper engine calibration and performance.
4. **Prevents Long-Term Damage** If the original sensor fails, it may cause the engine control module (ECM) to compensate incorrectly, potentially leading to carbon buildup, catalytic converter damage, or increased wear on ignition components. Replacing it early avoids these secondary issues.
5. **Easy Installation** The sensor is typically located near the air intake box or throttle body and is a straightforward plug-and-play replacement. Most mechanics or experienced riders can install it in under an hour with basic tools.
6. **Cost-Effective Upgrade** Compared to the potential cost of engine tuning, diagnostic trouble codes (DTCs), or fuel system repairs caused by a failing sensor, replacing it is a relatively inexpensive preventive measure. Prices for a quality aftermarket or OEM replacement sensor usually range between $30 and $80, depending on the brand and retailer.
7. **Warranty Coverage** Many aftermarket sensors come with warranties (e.g., 1-2 years), providing peace of mind in case of premature failure. Some Harley-Davidson dealers may also offer warranties on OEM parts.
8. **Improved Cold-Start Performance** A failing IAT sensor can cause rough idling or hesitation during cold starts. A new sensor ensures the engine receives the correct fuel mixture from the beginning, improving cold-weather operation.
---
### **Cons:**1. **Potential Counterfeit Parts** Buying from untrusted sellers (e.g., unknown online marketplaces or third-party auction sites) increases the risk of receiving a counterfeit or low-quality sensor. These may fail prematurely or not function correctly, leading to repeated issues. Always purchase from reputable dealers, Harley-Davidson authorized parts stores, or well-reviewed online retailers.
2. **Mismatched Calibration (Rare)** While uncommon, some aftermarket sensors may not be calibrated to the exact specifications of the original unit. This could result in minor inaccuracies in air temperature readings, though the impact on performance is usually negligible unless the sensor is significantly off-tolerance.
3. **Installation Challenges** If the sensor is corroded or the surrounding area is dirty, installation may require additional cleaning or part removal (e.g., air intake box). In rare cases, this could lead to minor damage to hoses or connectors if not handled carefully.
4. **Cost of Additional Components** If the sensor is part of a larger system (e.g., the air intake box or wiring harness is damaged), you may need to replace those components as well, increasing the total cost. However, this is not specific to the sensor itself.
5. **Diagnostic Confusion** If the sensor was failing intermittently, replacing it without confirming the root cause (e.g., a faulty ECM or wiring issue) might not resolve the problem. Always verify the sensor s condition with a multimeter or scan tool before purchasing.
6. **Limited Longevity in Harsh Conditions** While most sensors last long, extreme environments (e.g., constant high humidity, salt exposure, or extreme temperatures) can accelerate wear. Ensuring proper sealing during installation helps mitigate this.
7. **Learning Curve for DIY Installation** If you re not familiar with Harley-Davidson s fuel injection system, locating and replacing the sensor may require some research. However, this is a minor drawback compared to the benefits.
---
### **Conclusion:**Replacing the intake air temperature sensor on a 2004-2005 Harley-Davidson UA with a **Standard Motor MN/W0Y5 or an equivalent high-quality aftermarket sensor** is a **highly recommended maintenance task**. The benefits such as restored engine performance, improved fuel efficiency, and prevention of long-term damage far outweigh the minor risks, provided you purchase from a trusted source and perform the installation correctly.
The sensor is a critical but often overlooked component, and its failure can lead to more costly problems down the line. Given its relatively low cost and ease of replacement, there is little justification for delaying its replacement if it is confirmed faulty.
---
### **Recommendation:**1. **Verify the Sensor s Condition** Before purchasing, confirm the sensor is faulty by checking for error codes (e.g., P0112, P0113) with an OBD-II scanner or testing its resistance with a multimeter. A healthy sensor should read around **200-1,000 ohms at room temperature** and decrease resistance as temperature increases.
2. **Purchase from a Reputable Source** Buy the sensor from:- **Harley-Davidson Authorized Dealers** (ensures OEM quality).
- **Specialized Harley Parts Retailers** (e.g., Harley-Davidson Parts, Cycle World, or reputable online stores like Amazon, RockAuto, or eBay with verified sellers).
- **Manufacturers Directly** (e.g., Standard Motor s website or authorized distributors).
3. **Choose a Quality Sensor** While the MN/W0Y5 is the correct part number, consider **aftermarket brands known for reliability**, such as:- **Standard Motor** (often the best balance of quality and price).
- **Motorcraft** (Ford s OEM brand, compatible with Harley s system).
- **AC Delco** or **Bosch** (high-quality alternatives).
- Avoid no-name brands unless they have strong reviews and warranties.
4. **Follow Proper Installation Steps**
- Disconnect the battery before starting.
- Clean the sensor area and intake box to remove dirt or corrosion.
- Ensure the new sensor is securely tightened (but not overtightened) to avoid stripping threads.
- Reconnect wiring carefully and reset any error codes with the scan tool.
5. **Monitor Performance After Replacement** After installation, drive the bike and check for:- Smooth idle and acceleration.
- No error codes on the scan tool.
- Improved fuel economy or power response.
6. **Consider Professional Installation** If you re unsure about working on the fuel injection system, a Harley mechanic can install the sensor quickly and ensure no other issues exist (e.g., vacuum leaks, faulty wiring).
**Final Verdict:** **Proceed with the replacement.** The MN/W0Y5 sensor is the correct part, and investing in a quality unit will maintain your UA s performance and reliability. The potential drawbacks (e.g., counterfeit parts or installation challenges) are minimal compared to the benefits, especially when purchasing from a trusted source.
Standard Motor Intake Air Temperature Sensor for 2004 - 2005 Harley Davidson ua: Status: In Stock.