STANLEY P4173L Rear Left Lamp Unit Tail Brake Light

( Brand: Stanley ), ( Manufacturer Part Number: P4173L ), ( Type: Brake Light Assembly ), ( Machine Type: Street Motorcycle )

Review STANLEY Motorcycle Rear Left Lamp Unit Tail Brake Light Assembly fits GL1800

The **Stanley P4173L GL1800 Rear Left Lamp Unit/Tail Brake Light** is a high-performance, dual-function automotive lighting component designed to meet the stringent demands of modern vehicle applications while ensuring uncompromising reliability and clarity. Engineered for precision and durability, this lamp unit combines a **rear left tail light** with an integrated **brake light**, delivering crisp illumination to enhance visibility and safety on the road. The unit features a **GL1800 lens assembly**, a high-quality optical system optimized for sharp, glare-free light distribution, ensuring that drivers and pedestrians can easily discern the vehicle s braking intentions and position, even in low-light conditions or adverse weather. Constructed from robust materials, including a sturdy metal housing and a durable plastic lens, this lamp unit is built to withstand the rigors of daily use, from extreme temperatures to road debris, without compromising performance. Its sleek, aerodynamic design not only complements contemporary vehicle aesthetics but also integrates seamlessly with the surrounding taillight cluster, maintaining a cohesive and professional appearance. Whether installed on performance vehicles, luxury cars, or commercial fleets, this lamp unit exemplifies Stanley s commitment to innovation and engineering excellence, providing a reliable solution for all rear lighting needs. With its precise optical alignment and long-lasting components, the P4173L GL1800 ensures optimal visibility and compliance with automotive safety standards, making it an indispensable choice for discerning vehicle owners and professionals alike.

### **Pros and Cons of buying a Stanley P4173L GL1800 Rear Left Lamp Unit (Tail/Brake Light)**

1. **High Quality and Durability** The Stanley P4173L is known for its robust construction, often featuring durable materials like polycarbonate lenses and corrosion-resistant metal housings. This makes it suitable for long-term use, especially in vehicles exposed to harsh conditions.

2. **Compatibility with Common Vehicles** This lamp unit is designed to fit a wide range of vehicles, particularly those manufactured around the late 1990s to early 2000s. It is commonly used in rear left positions, making it a versatile replacement part.

3. **Clear and Bright Light Output** The GL1800 series typically includes LED or high-lumen bulbs, providing better visibility compared to older incandescent bulbs. This improves safety by ensuring the tail and brake lights are clearly visible to other drivers.

4. **Easy Installation** Stanley parts are often designed for straightforward installation, requiring minimal tools and technical skill. The wiring harness is usually pre-connected, reducing the risk of errors during assembly.

5. **Warranty and Reliability** Stanley is a trusted brand in automotive lighting, offering warranties on many of its products. This provides peace of mind in case of defects or premature failure.

6. **Aftermarket Support** Due to its popularity, finding replacement parts, wiring diagrams, or installation guides is relatively easy. Many online forums and repair guides cater to this specific model.

7. **Cost-Effective for Long-Term Use** While the upfront cost may be higher than some generic alternatives, the durability and performance often justify the expense, especially if the vehicle is well-maintained.

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1. **Higher Price Compared to Generic Brands** Stanley parts are premium, and this model may cost more than no-name or budget alternatives. If the vehicle is older or low-value, the expense might not be justified.

2. **Potential Overkill for Basic Needs** If the original lamp was functioning adequately, upgrading to a Stanley unit may not provide noticeable benefits beyond reliability. For very old or low-mileage vehicles, the cost-benefit ratio could be questionable.

3. **Compatibility Issues with Modified Vehicles** Some aftermarket modifications (e.g., custom wiring, LED retrofits, or non-standard mounting) may not align perfectly with the Stanley unit s design. Testing or adjustments might be required.

4. **Limited Availability in Some Regions** Depending on the location, finding this specific part in physical stores may be difficult. Online retailers (e.g., Amazon, RockAuto, or specialty auto parts sites) are often the primary sources.

5. **Potential for Over-Engineering** The GL1800 series includes advanced features (e.g., bright LEDs, corrosion-resistant coatings) that may not be necessary for all drivers. If simplicity is preferred, a simpler unit might suffice.

6. **Installation Challenges for DIY Beginners** While generally straightforward, wiring or mounting issues (e.g., misaligned connectors, tricky bolts) could frustrate inexperienced DIYers. Professional installation may be advisable for those unfamiliar with automotive electrical work.

7. **Resale Value Impact** If the vehicle is being sold, upgrading to a premium brand like Stanley may not significantly boost its resale value, especially if the original parts were still functional.

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The Stanley P4173L GL1800 rear left lamp unit is an excellent choice for drivers prioritizing **durability, clarity, and long-term reliability**. It is particularly well-suited for vehicles where the original lighting is faded, corroded, or unreliable. The investment is justified if the vehicle is well-maintained or if the driver values high-quality components that reduce the risk of future failures.

However, if the vehicle is **old, low-value, or already in good condition**, the cost may not be worth the upgrade. In such cases, a **budget-friendly but compatible generic lamp** could serve the same purpose without the premium price. Additionally, those uncomfortable with minor installation challenges should consider professional help or opt for simpler alternatives.

- Your vehicle s original lamp is failing or poorly visible.

- You prioritize long-term reliability and bright, clear lighting.

- You are comfortable with a slightly higher upfront cost for peace of mind.

- The vehicle is a daily driver or holds significant personal value.

- The vehicle is old, low-mileage, or not worth significant repairs.

- You prefer a cheaper, no-frills replacement that meets basic needs.

- You lack confidence in installing it yourself and cannot afford professional labor.

- The original lamp still functions adequately, and the upgrade is unnecessary.

For most drivers seeking a **balance of quality and performance**, the Stanley unit is a strong recommendation. However, always verify compatibility with your specific vehicle model and consult wiring diagrams if unsure.

Details:

The Motorcycle GL1800 Rear Left Lamp Unit Tail Brake Light Assembly by Stanley is a high-quality brake light assembly designed specifically for street motorcycles. This OE/OEM part number P4173L is a perfect fit for Honda GL1800 motorcycles, providing reliable and durable lighting solution the rear left side of bike. Made by the trusted brand Stanley, this brake light assembly ensures safety and visibility on road, making it a must-have accessory for motorcycle riders.

part #: p4173l prices

• $50.00-$112.80

specifications cyclerearbrake:

• for models: Gl1800
• brand: Stanley
• mpn: P4173l
• type: Brake Light Assembly
• machine type: Street Motorcycle

returns cyclerearbrake:

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

offer cyclerearbrake:

• sold: 0
• quantity: 1
• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: February 14, 2026

shipping cyclerearbrake:

• carrier: FedEx
• class: Economy
• service: FedEx Ground Economy
• cost: $0.00
• type: Calculated
• transit: 5-11 Days

payments cyclerearbrake:

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

general cyclerearbrake:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Lighting Lamps > Tail Brake Light Assemblies

seller cyclerearbrake:

• # reviews: 663
• city: Waco, Texas
• rating: 100.0%

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