HD SOLUTIONS 674-6020 Exhaust Pipe Kit 889245041371 MX-13 13.25 3.5

( Brand: Hd Solutions ), ( Manufacturer Part Number: 674-6020 ), ( Manufacturer Warranty: 1 Year ), ( Type: Exhaust Pipe Bellow ), ( UPC: 889245041371 )

Review HD SOLUTIONS Kenworth Peterbilt Exhaust Pipe Kit 13.25 3.5 Inches fits FLEX 2016–2017

The **2016-2017 Kenworth W900/Peterbilt MX-13 674-6020 Exhaust Flex Pipe Kit (13.25" x 3.5")** is a meticulously engineered aftermarket solution designed to enhance the performance, durability, and reliability of heavy-duty Class 8 trucks equipped with the Cummins X15 or X12 diesel engines. This premium flex pipe kit is specifically tailored for the **674-6020 exhaust manifold configuration**, ensuring a seamless fit between the turbocharger and the exhaust system while accommodating the unique spacing and structural demands of the Kenworth W900 and Peterbilt MX-13 chassis. Crafted from high-grade **304 stainless steel**, the kit s **13.25-inch diameter primary pipe** and **3.5-inch secondary pipe** are precision-bent to optimize exhaust flow, reduce backpressure, and minimize the risk of premature wear or failure common issues in high-stress diesel applications. The **universal flex joints** incorporated into the design allow for slight movement between the engine and exhaust system, absorbing vibrations and thermal expansion while maintaining a tight seal. This flexibility not only extends the lifespan of the exhaust components but also reduces the strain on the turbocharger and engine mounts, contributing to smoother operation and lower maintenance costs over time. Ideal for fleets and independent operators seeking a **drop-in replacement** for worn or damaged OEM exhaust pipes, this kit is backed by rigorous quality control to ensure compatibility with aftermarket turbochargers, intercoolers, and mufflers. Whether installed in a long-haul truck, a regional delivery rig, or a heavy-duty towing application, this **674-6020 flex pipe kit** delivers a robust, long-lasting solution that balances performance with ease of installation, making it a standout choice for professionals demanding precision and durability in their diesel exhaust systems.

### **Pros and Cons of buying a 674-6020 (2016-2017 Kenworth/Peterbilt MX-13 Exhaust Flex Pipe Kit 13.25" x 3.5")**

1. **Compatibility** This kit is specifically designed for the 2016-2017 Kenworth W900/W930 and Peterbilt 579/587 models with the MX-13 engine. It ensures a proper fit without modifications, reducing the risk of leaks or misalignment.

2. **Durability** The flex pipe is constructed from high-quality stainless steel, which resists corrosion, heat, and mechanical stress better than standard exhaust components. This extends the lifespan of the exhaust system, especially in harsh operating conditions.

3. **Reduced Vibration & Stress** The flexible design absorbs engine and road-induced vibrations, reducing strain on the exhaust manifold, turbocharger, and other connected components. This can prevent premature wear and potential failures.

4. **Ease of Installation** The kit is pre-assembled with proper gaskets, clamps, and mounting hardware, simplifying the installation process compared to custom or aftermarket alternatives. This can save time and labor costs.

5. **OEM-Quality Fitment** Being an original equipment or high-quality aftermarket part, it maintains the intended performance and emissions compliance of the vehicle. This is important for compliance with regulations like EPA or CARB standards.

6. **Improved Exhaust Flow** A properly fitted flex pipe ensures smooth exhaust gas flow, which can contribute to better engine efficiency and reduced backpressure.

7. **Warranty Coverage** If purchased from a reputable dealer or manufacturer, the kit may come with a warranty, providing peace of mind against defects or premature failure.

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1. **Cost** High-quality flex pipe kits are more expensive than basic exhaust components. The price point may be a significant investment, especially for fleets or operators on tight budgets.

2. **Limited Customization** Since this is a standardized kit for a specific model range, it does not offer customization options for unique exhaust configurations or modifications.

3. **Potential for Counterfeit Parts** If purchasing from an untrusted source, there is a risk of receiving substandard or counterfeit parts that fail prematurely or do not fit correctly.

4. **Installation Expertise Required** While the kit is designed for ease of installation, improper handling during installation (e.g., overtightening clamps, misalignment) can void warranties or cause leaks.

5. **Resale Value Impact** If the vehicle is later sold, the presence of an aftermarket flex pipe kit (even if high-quality) might raise questions about maintenance history or potential issues, potentially affecting resale value.

6. **Maintenance Considerations** Flex pipes require periodic inspection for cracks, corrosion, or clamp loosening. Neglecting maintenance could lead to exhaust leaks or system failures.

7. **Availability of Parts** Depending on the supplier, stock availability may vary, and delays could occur if the kit is not in high demand.

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The **674-6020 (2016-2017 Kenworth/Peterbilt MX-13 Exhaust Flex Pipe Kit)** is a well-engineered solution for reducing exhaust system stress and improving durability on these specific truck models. Its benefits in vibration dampening, corrosion resistance, and ease of installation make it a strong choice for operators prioritizing long-term reliability. However, the higher cost and potential risks of counterfeit parts or improper installation must be carefully considered.

For most commercial fleets or owners operating in demanding conditions (e.g., heavy hauling, off-road, or extreme climates), the **pros outweigh the cons**, making this kit a worthwhile investment. If budget is a concern, it may be worth comparing it to alternative brands or used kits, but quality should not be compromised for cost savings in critical components like exhaust systems.

- **Purchase from an authorized dealer or reputable supplier** to ensure authenticity and warranty coverage.

- **Follow manufacturer installation guidelines** precisely to avoid voiding warranties or causing leaks.

- **Schedule regular inspections** of the flex pipe and surrounding components to catch wear or damage early.

- **Consider the long-term cost savings** from reduced exhaust system failures and improved engine longevity when evaluating the upfront expense.

For operators of 2016-2017 Kenworth/Peterbilt trucks with MX-13 engines, this kit is **highly recommended** for its balance of performance, durability, and compatibility.

Details:

RIGHT is the PASSENGER SIDE. LEFT SIDE is the DRIVER. MX-13.25 In. 2017 Kenworth T800 Engine Deg.

length ; 3.5 In. If the human side of business causes a issue in order you can be reassured that we'll do everything our power to correct it. 2017 Kenworth T680 Engine Deg. Our job is to get you the correct part first time.

part #: 6746020 prices

• $166.41-$436.89

specifications emissyste:

• for models: Flex
• for makes: Kenworth, Peterbilt
• for years: 2016-2017
• brand: Hd Solutions
• mpn: 674-6020
• manufacturer warranty: 1 Year
• type: Exhaust Pipe Bellow
• upc: 889245041371

payments emissyste:

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

shipping emissyste:

• transit: 3-6 Days
• cost: $0.00
• service: UPS Ground
• carrier: UPS
• class: Standard
• type: Fixed

offer emissyste:

• availability: In Stock
• sold: 0
• started: April 2, 2026
• quantity: 4
• options: Ship-to-home

returns emissyste:

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

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New

seller emissyste:

• rating: 100.0%
• # reviews: 28067
• city: Warsaw, Kentucky

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