1. Lighting Auto Parts For Sale
  2. sku: 10878289703429603
  3. PETERBILT 2640594

PETERBILT 2640594 Tail Light 579

fits model: Fl. make: Peterbilt. year: 2021.

2640594 Replaces 2021 Peterbilt 579 Tail Light Fl

( Manufacturer Part Number: 2640594 ), ( Part Type: Light ), ( Color: Red, White ), ( Side: Left )

Review PETERBILT Replaces 579 Tail Light fits FL 2021

The **2021 Peterbilt Model 579 Tail Light Assembly (Part Number 2640594)** is a precision-engineered, high-performance lighting component designed exclusively for Peterbilt s iconic Model 579 semi-truck series, ensuring both compliance with stringent transportation regulations and optimal visibility for enhanced safety on the road. Crafted from durable, impact-resistant polycarbonate with a rugged, matte black finish, this tail light assembly is engineered to withstand the harshest conditions, including extreme temperatures, moisture, and road debris, while maintaining clarity and functionality over thousands of miles. The assembly features a sleek, aerodynamic design that seamlessly integrates with the truck s streamlined contours, reducing wind resistance and improving fuel efficiency without compromising on visibility. Inside, a sophisticated optical system houses high-luminosity LED bulbs, delivering a bright, crisp white light for daytime running signals, as well as a distinct amber or red illumination for rear braking and turn signals, all while consuming significantly less power than traditional incandescent bulbs. The housing is reinforced with UV-resistant coatings to prevent yellowing or cracking over time, ensuring long-term reliability and a professional appearance. This tail light assembly is fully compliant with FMVSS (Federal Motor Vehicle Safety Standards) and DOT regulations, making it an ideal replacement for OEM-equipped lights or aftermarket upgrades seeking to maintain factory specifications. Whether installed on a new build or as part of a restoration project, this component exemplifies Peterbilt s commitment to performance, durability, and driver safety, making it a must-have for fleet operators, truck enthusiasts, and professional mechanics prioritizing quality and longevity.

### **Pros and Cons of Buying a 2021 Peterbilt Model 579 (VIN: 2640594) with Tail Light Failure**

#### **Pros**

1. **Recent Model Year (2021)** This truck is relatively new, meaning it has fewer miles and less wear compared to older models. The 2021 Peterbilt 579 was equipped with updated technology, including improved fuel efficiency, advanced driver aids, and refined engine options.

2. **Peterbilt s Reputation for Durability** Peterbilt is a well-regarded truck manufacturer known for building robust, long-lasting commercial vehicles. The Model 579 is a popular choice for long-haul and regional hauling due to its reliability and comfort.

3. **Potential for High Resale Value** Since it s a newer model, it may retain its value better than older trucks, especially if well-maintained. The 579 is a sought-after rig, so a clean history could make it easier to resell later.

4. **Modern Features and Comfort** The 2021 579 likely includes features such as:

- **Advanced driver assistance systems** (e.g., collision mitigation, lane departure warning).

- **Improved ergonomics** in the cab for long-haul drivers.

- **Better fuel economy** compared to older models, thanks to updates in aerodynamics and engine technology.

- **Digital dashboards** for easier monitoring of vehicle performance.

5. **Lower Maintenance Costs (Initially)** A newer truck means fewer major repairs are needed upfront. However, long-term maintenance costs depend on how the truck has been driven and maintained.

6. **Potential for Lower Fuel Consumption** The 2021 model may have been fitted with a **Detroit DD15** or **Cummins X15** engine, which are known for better fuel efficiency and torque compared to older generations.

7. **Easier Financing Options** Newer trucks often qualify for better loan terms or leasing options, though this depends on the seller and current market rates.

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#### **Cons**

1. **Tail Light Failure (VIN-Specific Issue)** The most significant concern is the reported tail light failure. Tail lights are critical for safety and compliance with DOT regulations. If this issue is not properly addressed:

- The truck may fail **inspections**, leading to fines or delays.

- It could pose a **safety risk** if the lights are non-functional during nighttime or adverse weather.

- The seller may have already attempted repairs, but if the problem persists, it could indicate a deeper electrical or wiring issue.

**Key Questions to Ask:**

- Has the tail light been professionally diagnosed and repaired?

- Are there any known recalls or service bulletins related to this issue?

- Does the seller have proof of repairs (e.g., service records)?

2. **Potential Hidden Mechanical Issues** Even if the tail light is the only reported issue, a used truck can have:

- **Unexplained maintenance costs** (e.g., suspension, drivetrain, or cooling system problems).

- **Mileage concerns** If the truck has high miles (e.g., over 200,000 ), wear on major components like the transmission, axles, or engine could be a concern.

- **Lack of service history** Without full maintenance records, it s hard to verify if critical components (e.g., turbochargers, injectors, brakes) have been properly serviced.

3. **Depreciation Impact** While a 2021 truck depreciates less than older models, it still loses value over time. If the tail light issue isn t resolved, it could further reduce resale value.

4. **Potential for Higher Purchase Price** If the seller is aware of the tail light issue but still wants a premium price, you may end up paying more than the truck s true market value.

5. **Warranty Limitations** If the truck was previously under warranty, the tail light issue may have been covered. However, if the warranty has expired, you ll be responsible for any future repairs.

6. **Market Availability of Parts** While Peterbilt parts are widely available, some aftermarket or OEM components may take time to order, potentially causing downtime if a failure occurs.

---

### **Conclusion**

Buying a **2021 Peterbilt 579 with a tail light failure** can be a good investment if:

- The tail light issue is **fully diagnosed, repaired, and documented** by a trusted mechanic.

- The truck has a **clean service history** and **low miles** (ideally under 150,000 200,000).

- You are **prepared for potential minor issues** that come with a used truck, even a newer one.

However, if the tail light problem is **not properly resolved** or if the truck lacks transparency in its maintenance records, the risks (safety hazards, inspection failures, unexpected repairs) may outweigh the benefits.

### **Recommendation**

1. **Get a Professional Inspection** Before purchasing, have a **trusted truck mechanic or DOT inspector** thoroughly check:

- The **electrical system** (especially wiring related to the tail lights).

- **Brakes, suspension, and drivetrain** for wear.

- **Engine and transmission health** (look for leaks, unusual noises, or error codes).

- **Tire condition and alignment**.

2. **Verify the Tail Light Repair**

- Ask for **service records** proving the issue was fixed.

- Test the tail lights in **different conditions** (day/night, on/off) to ensure they function correctly.

- Check if the seller has **replaced bulbs, relays, or wiring** sometimes the problem is a simple fix.

3. **Negotiate the Price**

- If the tail light issue is unresolved, use it as leverage to **reduce the purchase price** or have the seller cover repairs.

- Compare the asking price to **market value** for a 2021 579 in similar condition.

4. **Consider Alternative Options**

- If the tail light issue is a dealbreaker, look for another **2021 Peterbilt 579 with a clean history** or consider a **2020 model** (which may have lower mileage).

- If budget allows, a **new or lightly used truck** with a full warranty could be a safer long-term choice.

5. **Budget for Future Maintenance**

- Even with a newer truck, set aside funds for **routine maintenance** (oil changes, filter replacements, tire rotations) and **unexpected repairs**.

### **Final Verdict**

**Proceed with caution.** The 2021 Peterbilt 579 is a strong truck with many advantages, but the **tail light issue must be fully resolved** before buying. If you re confident in the repairs and the truck s overall condition, it could be a solid purchase. However, if the seller cannot provide proof of a proper fix or if other red flags exist, it may be wiser to look elsewhere to avoid potential headaches down the road. Always prioritize **safety, transparency, and long-term reliability** over a quick deal.

Details:

If not, let us know how to earn your 5-star rating. Replaces 2021 PETERBILT 579 TAIL LIGHT, FL.

specifications tusilap:

  • for models: Fl
  • for makes: Peterbilt
  • for years: 2021
  • mpn: 2640594
  • part type: Light
  • color: Red, White
  • side: Left

shipping tusilap:

  • cost: $0.00
  • carrier: UPS
  • type: Fixed
  • service: UPS Ground
  • transit: 2-6 Days
  • class: Standard

offer tusilap:

  • availability: In Stock
  • started: May 7, 2026
  • sold: 0
  • quantity: 1
  • options: Ship-to-home

payments tusilap:

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

seller tusilap:

  • city: Tampa, FL
  • # reviews: 10390
  • rating: 99.0%

general tusilap:

  • condition: Used
  • Commercial Truck Parts > Lighting > Backup Tail Lights

returns tusilap:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted
for models: fl, for makes: peterbilt, for years: 2021, part type: light, side: left,
manufacturer: peterbilt, category: auto parts > commercial truck parts > lighting > backup tail lights, color: red white, sku: 10878289703429603,
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1 offer $119.53 USD
  • Used. Offer #1 priced at $119.53 + $0.00 shipping estimate = $119.53* total. ''.FREE SHIPPING

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