TRIANGLE SUSPENSION 75-174 Spr Lvs PD/5/1

( Brand: Triangle Suspension ), ( Manufacturer Part Number: 75-174 )

Review TRIANGLE SUSPENSION Peterbilt Spr Lvs Pd/5/1 Oem# 2017 91 Length fits SE

The **2017 Peterbilt Model 579 SE Triangle Suspension 75-174 PV (Powerstroke/5.9L/PD-5/1)** is a robust and meticulously engineered semi-truck designed for heavy-duty hauling, offering an unmatched blend of power, durability, and precision handling. Built on Peterbilt s legendary **Model 579** chassis a workhorse favored by fleet operators and owner-operators alike the **75-174** configuration delivers a **75-inch wheelbase** paired with a **174-inch rear overhang**, striking a perfect balance between maneuverability and payload capacity. This layout ensures optimal weight distribution, reducing stress on the drivetrain while maintaining stability during long-haul operations or tight turns in urban environments. The **Triangle Suspension** system, a hallmark of Peterbilt s engineering prowess, enhances ride comfort and load stability by distributing weight more evenly across the axles, minimizing sway and improving overall control especially critical when carrying oversized or irregularly shaped cargo.

Under the hood, this truck is powered by the **PD-5/1 Cummins 5.9L diesel engine**, a workhorse known for its reliability, fuel efficiency, and sheer torque output. This **6-cylinder inline engine** produces a substantial amount of power while maintaining a compact footprint, making it ideal for heavy-duty applications. Paired with a **10-speed automated manual transmission (AMT)**, the drivetrain ensures seamless shifting and optimal fuel economy, whether cruising on the highway or navigating mountainous terrain. The **5.9L s** proven durability is further complemented by **Peterbilt s advanced diagnostics and maintenance-friendly design**, reducing downtime and extending the truck s operational lifespan.

The **2017 Model 579 SE** is equipped with a **spacious, ergonomic cab** designed for driver comfort and efficiency. The **Super Elite (SE) trim** elevates the standard with premium features such as **heated and ventilated seats**, a **climate-controlled cab**, and **advanced driver aids**, including a **forward-facing camera system** and **lane departure warning**. The **dual-zone automatic climate control** ensures optimal temperature regulation, while the **integrated navigation system** and **Bluetooth connectivity** enhance productivity on the road. The **cab-over-engine (COE) design** maximizes visibility, allowing the driver to have an unobstructed view of the road ahead, which is particularly advantageous for precise maneuvering in tight spaces or during loading/unloading operations.

Safety and functionality are prioritized with **Peterbilt s signature suspension and braking systems**. The **Triangle Suspension** not only improves ride quality but also enhances load stability, reducing the risk of sway or jackknifing during sudden maneuvers. The **air-over-hydraulic brakes** provide consistent stopping power, while the **electronic stability control (ESC)** and **trailer stability control (TSC)** systems actively prevent rollovers and skids. Additionally, the **integrated trailer brake controller** ensures seamless communication between the truck and trailer, optimizing braking performance for heavy loads.

Built for longevity and performance, the **2017 Peterbilt 579 SE 75-174 PV** is a versatile workhorse suited for a wide range of industries, from construction and logistics to regional hauling. Whether tackling rough terrain, navigating urban delivery routes, or enduring long cross-country trips, this truck delivers **uncompromising reliability, efficiency, and driver comfort**. With Peterbilt s reputation for innovation and durability, this model stands as a testament to the brand s commitment to excellence in commercial transportation, offering a perfect fusion of power, precision, and practicality for the demanding professional.

### **Pros and Cons of Buying a 2017 Peterbilt Model 579 (Triangle Suspension, 75-174 Series, PD/5/1, SE) with LVS**

#### **Pros**

1. **Reliability and Build Quality**

- Peterbilt trucks are known for their durability and robust construction, particularly in long-haul and heavy-duty applications. The 579 model is built on a strong chassis designed for commercial trucking.

- The 2017 model year was part of a stable production run, with fewer known major recalls or widespread issues compared to some later models with software or component updates.

2. **Triangle Suspension System**

- The triangle suspension (often referred to as "air-ride" or "air-suspension") provides a smoother ride, better load stability, and improved driver comfort over traditional leaf-spring suspensions.

- This system helps reduce fatigue over long hauls and can extend the lifespan of the truck s drivetrain by minimizing harsh impacts.

3. **Powerful Engine Options**

- The 579 series typically comes with high-performance diesel engines such as the Cummins X15 (if available in this model year) or the Detroit DD15, which are known for their torque and fuel efficiency.

- The PD/5/1 designation suggests a **5-speed automatic transmission**, which is reliable for long-haul applications and offers better fuel economy than older manual transmissions.

4. **Modern Cab Features (SE Trim)**

- The SE trim includes amenities like a comfortable driver s seat, climate control, and possibly a modern infotainment system (depending on the exact configuration).

- The cab design prioritizes visibility and ergonomics, which can reduce driver fatigue on long routes.

5. **Resale Value and Market Demand**

- Peterbilt trucks, especially well-maintained models from this era, hold their value reasonably well in the used market.

- The 579 series is a popular choice for owner-operators and fleets, meaning parts and service support remain widely available.

6. **Low-Mileage Potential (If Available)**

- If this truck has been lightly used (e.g., stored or used for short-haul work), it could offer significant value compared to high-mileage units.

- The 2017 model year is not extremely old, so major components like the engine, transmission, and suspension may still have substantial life left.

7. **Fuel Efficiency**

- Modern diesel engines in this class (especially with EGR and DPF systems) offer better fuel economy than older models, reducing operating costs over time.

- The air suspension can also contribute to slightly improved aerodynamics compared to older suspension setups.

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#### **Cons**

1. **Age and Wear Considerations**

- At nearly a decade old (as of 2023), this truck will require more maintenance than a newer model. Key components like the **transmission, drivetrain, and suspension** may need attention soon.

- The **exhaust aftertreatment system (DPF/SCR)** could be approaching its service interval, leading to potential downtime if not properly maintained.

2. **Potential for Hidden Issues**

- **Engine or transmission wear** (e.g., valve train issues, turbocharger failure, or transmission fluid leaks).

- **Suspension wear** (air springs, shocks, or linkages may need replacement).

- **Electrical gremlins** (older trucks can develop wiring or sensor failures).

- **Rust or frame damage** (especially if the truck was exposed to harsh conditions).

3. **Fuel and Emissions Compliance**

- The 2017 model year was subject to **EPA/OMC emissions regulations**, meaning the truck likely has a **DPF (Diesel Particulate Filter) and SCR (Selective Catalytic Reduction) system**.

- These systems require **DEF (Diesel Exhaust Fluid)**, adding to fueling costs. If the truck has not been properly maintained, the DPF could clog, leading to reduced power or failure.

- Some newer trucks have updated emissions systems that may be more reliable, making this an older (but still compliant) alternative.

4. **Parts and Labor Costs**

- While parts are still widely available, labor costs for repairs on an older truck may be higher than on newer models, especially if the seller is not offering a warranty or service agreement.

- Some components (e.g., air suspension parts, certain sensors) may be more expensive than on newer trucks due to obsolescence.

5. **Driver Comfort and Technology Limitations**

- Advanced driver-assistance systems (ADAS).

- Improved ergonomics or seating options.

- Better infotainment or connectivity (e.g., telematics, Bluetooth integration).

- The cab may feel less refined than newer models, which could affect long-term driver satisfaction.

6. **Financing and Depreciation**

- Older trucks typically have higher interest rates or stricter loan terms compared to newer models.

- Depreciation continues over time, so if you plan to keep the truck long-term, the value may erode faster than a newer purchase.

7. **Potential for Modifications or Upgrades Needed**

- **Engine rebuild or major service** (e.g., valve train, turbo, injectors).

- **Transmission fluid changes or syncro rebuilds**.

- **Suspension overhaul** (air springs, shocks, bushings).

- **Electrical system updates** (wiring, sensors, alternator).

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### **Conclusion**

Buying a **2017 Peterbilt 579 (75-174 series, PD/5/1, SE, LVS)** can be a **cost-effective choice** if you prioritize **reliability, fuel efficiency, and a comfortable ride** while being prepared for **maintenance and potential upgrades**. This truck is well-suited for **long-haul, regional, or owner-operator use**, provided it has been well-maintained.

However, the **age of the truck means it is not a "set-and-forget" purchase**. You should expect to invest in **regular maintenance, potential repairs, and possibly upgrades** to keep it running efficiently. If you are looking for a **lower-cost entry into trucking** or a **replacement for an older truck**, this model offers a good balance. But if you want **minimal long-term hassle and the latest technology**, a newer model (e.g., 2020 ) may be more appealing despite a higher upfront cost.

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### **Recommendation**

1. **Get a Pre-Purchase Inspection (PPI)**

- Hire a **certified truck mechanic** to inspect the engine, transmission, suspension, brakes, and electrical systems. This will help identify any **hidden issues** and give you leverage in negotiations.

2. **Check Maintenance Records**

- **Engine oil changes and valve train service**.

- **Transmission fluid changes and syncro inspections**.

- **Air suspension and brake system maintenance**.

- **DPF/SCR and DEF system service**.

- If records are incomplete or missing, **walk away** unless the price reflects the risk.

3. **Negotiate Based on Condition**

- If the PPI reveals issues, use them to **reduce the price** or negotiate a **warranty or service agreement** from the seller.

- Avoid buying a truck that requires **immediate major repairs** (e.g., engine rebuild, transmission failure) unless you factor those costs into the purchase price.

4. **Consider Financing Carefully**

- Older trucks may require **higher interest rates** or **shorter loan terms**. Compare offers from multiple lenders.

- If possible, **pay cash or use a low-interest loan** to avoid being stuck with high payments if the truck needs repairs.

5. **Budget for Upkeep**

- Allocate **at least 10-15% of the truck s value annually** for maintenance and unexpected repairs.

- Factor in **DEF costs** (if applicable) and **tire replacements** (every 700,000 1 million miles).

6. **Decide on New vs. Used Trade-Off**

- If you can afford a **newer Peterbilt (2020 )** with modern features and better reliability, it may be worth the extra cost if you plan to keep the truck for **5 years**.

- If you need a **lower-cost option** and are prepared for **maintenance work**, the 2017 model is a **solid choice** for experienced operators.

### **Final Verdict**

- Want a **reliable, fuel-efficient long-haul rig**.

- Are **willing to invest in maintenance** to keep it running.

- Prefer **air suspension comfort** over the latest tech.

- Can **negotiate a fair price** based on condition and history.

However, if you want **minimal long-term hassle and the latest safety/technology features**,

Details:

Made of high-quality components for durability, reliability, and performance. Engineered using the latest technology to ensure product lasts longer in Service. Manufactured following strict OE standards to work like the original component. Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle.

Designed specifically for trucks, trailers, and buses. Triangle Suspension 75-174 Peterbilt, F Spr, Lvs:Pd/5/1 ; Oem# 2017 91; Se length : Part Number: Manufacturer.

part #: 75174 price

• $1207.14

specifications snowmobileshocksoi:

• for models: Se
• for makes: Peterbilt
• brand: Triangle Suspension
• mpn: 75-174

offer snowmobileshocksoi:

• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 2
• started: May 20, 2026

seller snowmobileshocksoi:

• city: Los Angeles, California
• rating: 99.4%
• # reviews: 70692

shipping snowmobileshocksoi:

• class: Standard
• cost: $0.00
• type: Fixed
• service: Standard
• transit: 3-8 Days

general snowmobileshocksoi:

• Parts Accessories > Snowmobile Parts > Shocks Suspension
• condition: New

returns snowmobileshocksoi:

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

payments snowmobileshocksoi:

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

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