MACK 47MO3017R Directional Signal Lamp 25160921 TL20300

( Manufacturer Part Number: 47MO3017R ), ( Part Type: Signal Lamp )

Review MACK Directional Signal Lamp Assembly

The **Mack 47MO3017R 25160921 TL20300 Directional Signal Lamp** is a high-performance, heavy-duty lighting solution engineered specifically for commercial and industrial trucking applications, delivering unmatched visibility and reliability in demanding environments. Part of Mack Trucks premium TL20300 series, this directional signal lamp is designed to meet or exceed stringent industry standards, ensuring optimal functionality while adhering to strict safety regulations. Constructed with durable, corrosion-resistant materials, this lamp features a robust housing that protects internal components from harsh weather conditions, road debris, and extreme temperatures, making it ideal for long-haul and off-road operations where durability is non-negotiable.

The **47MO3017R** model incorporates a **high-output LED array**, providing superior illumination with enhanced brightness and energy efficiency compared to traditional incandescent or halogen alternatives. The LED technology ensures a longer operational lifespan, reducing maintenance downtime and replacement costs while maintaining consistent performance over thousands of hours. Its **amber directional signal** is strategically positioned for maximum visibility, ensuring that drivers and other road users can easily recognize lane changes, turns, and stops, even in low-light conditions or adverse weather. The lamp s sleek, aerodynamic design integrates seamlessly with modern truck cab aesthetics, blending functionality with a professional appearance.

Beyond its primary signaling function, this directional signal lamp is engineered for **easy installation and maintenance**. The **25160921** part number corresponds to a precise fit for Mack Trucks TL20300 series, ensuring compatibility with the truck s existing wiring and mounting systems. The lamp s modular design allows for quick replacement in the event of a failure, minimizing repair time and maximizing uptime for fleets. Additionally, the **waterproof (IP67-rated) and dust-tight** construction ensures protection against moisture ingress and particulate contamination, further extending the lamp s operational life in rugged environments.

For fleet operators prioritizing safety, efficiency, and longevity, the **Mack 47MO3017R 25160921 TL20300 Directional Signal Lamp** represents a superior investment. Its combination of **high-visibility LED technology, robust build quality, and seamless integration** makes it an indispensable component for commercial trucks, ensuring compliance with regulatory requirements while enhancing overall operational safety. Whether navigating congested highways or remote construction sites, this directional signal lamp delivers the clarity and reliability needed to keep drivers and cargo secure on every journey.

**Pros and Cons of buying a Mack 47MO3017R 25160921 TL20300 Directional Signal Lamp**

### **Pros**

1. **Compatibility and Fit**: This part is specifically designed for Mack trucks, particularly models that require the **47MO3017R** or **25160921** designation. It ensures a precise fit, reducing the risk of installation errors or misalignment that could lead to malfunction or damage.

2. **Durability and Quality**: Mack is a well-known manufacturer in the heavy-duty truck industry, and their parts are generally built to withstand harsh conditions, including extreme temperatures, vibrations, and exposure to moisture or debris. This lamp is likely constructed from robust materials like polycarbonate or reinforced plastic, ensuring longevity.

3. **Visibility and Functionality**: Directional signal lamps are critical for safety, especially in large trucks where visibility is paramount. This lamp is designed to provide clear, bright signals, helping drivers communicate their intentions (e.g., lane changes, turns) effectively to other road users.

4. **OEM (Original Equipment Manufacturer) Status**: Purchasing an OEM part like this one ensures that it meets the same standards as the original equipment installed by Mack during manufacturing. This can be important for maintaining warranty coverage or compliance with fleet regulations.

5. **Ease of Installation**: Since it is a direct replacement part, installation should be straightforward for someone with basic mechanical skills. The part is likely designed to fit seamlessly into the existing wiring and mounting system of the truck.

6. **Warranty and Support**: If purchased from an authorized dealer or Mack-approved supplier, this part may come with a warranty or support, providing peace of mind in case of defects or premature failure.

7. **Standardization**: This part is part of a standardized system, meaning it is likely compatible with other similar models or aftermarket parts that follow the same specifications, offering flexibility in maintenance or upgrades.

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### **Cons**

1. **Cost**: As an OEM or high-quality aftermarket part, this lamp may be more expensive than generic or non-branded alternatives. For fleets or individual owners on a tight budget, this could be a significant drawback.

2. **Limited Availability**: Depending on the region or supplier, this specific part may not be readily available in all stores or online marketplaces. Purchasing it may require ordering from a specialized dealer, which could involve longer lead times.

3. **Potential for Counterfeit Parts**: If buying from untrusted sources (e.g., unlicensed sellers on third-party platforms), there is a risk of receiving counterfeit or substandard parts. Counterfeit parts may fail prematurely or not function as intended, compromising safety.

4. **Maintenance Requirements**: While durable, directional signal lamps may still require periodic cleaning (e.g., removing dirt, grime, or fogging) to ensure optimal visibility. Neglecting maintenance could reduce their effectiveness over time.

5. **Compatibility with Modifications**: If the truck has been modified (e.g., aftermarket lighting systems, wiring changes, or bodywork alterations), this OEM part may not fit or function correctly. Always verify compatibility with any modifications before purchasing.

6. **Environmental Factors**: Exposure to harsh environments (e.g., extreme cold, salt spray in coastal areas, or constant exposure to UV rays) can accelerate wear and tear on the lamp, potentially shortening its lifespan even if it is high-quality.

7. **Disposal or Recycling Challenges**: Like many electronic or plastic components, disposing of this lamp improperly could pose environmental concerns. Some regions have specific regulations for recycling or disposing of automotive parts, which may add an extra step to ownership.

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### **Conclusion**

The **Mack 47MO3017R 25160921 TL20300 Directional Signal Lamp** is a high-quality, reliable part designed for safety and durability in heavy-duty trucks. Its primary advantages lie in its compatibility, longevity, and adherence to OEM standards, which are critical for maintaining vehicle performance and safety. However, the higher cost, potential availability issues, and the need for proper maintenance or disposal are factors that may influence the decision to purchase it.

For most truck owners or fleets prioritizing safety, reliability, and long-term performance, this part is a worthwhile investment. It is particularly recommended if:

- You need an exact replacement to avoid compatibility issues.

- You operate in demanding conditions where durability is essential.

- You prefer OEM parts to maintain warranty coverage or regulatory compliance.

- You have access to authorized dealers or trusted suppliers to ensure authenticity.

If budget constraints are a major concern or if you are unsure about the part s compatibility with your specific truck configuration, exploring aftermarket alternatives (while verifying their quality and reviews) may be a viable option. Always prioritize safety and functionality when selecting critical components like directional signal lamps.

Details:

All parts are unused, dealer-sourced, and classified as New Old Stock NOS. Brands include Yamaha, Ford, Polaris, Mack, Arctic Cat as the brands, and many more including parts for Motorcycles, Small Engines, marine. Item Overview. Included: Directional Signal Lamp Assembly.

Manufacturer Part Number: 47MO3017R, 25160921,TL20300.

part #: 47mo3017r prices

• $23.54-$45.68

specifications tusilap:

• for makes: Mack
• mpn: 47mo3017r
• part type: Signal Lamp

returns tusilap:

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

shipping tusilap:

• transit: 5-11 Days
• class: Standard, Expedited, One-day
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• carrier: USPS, UPS
• cost: $0.00
• type: Calculated

seller tusilap:

• city: Ashaway, Rhode Island
• rating: 99.9%
• # reviews: 136627

general tusilap:

• Commercial Truck Parts > Lighting > Other Lighting
• condition: Used

payments tusilap:

• other
• wallet: Apple-pay
• credit card: Discover

offer tusilap:

• quantity: 1
• best offers: True
• started: May 9, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

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