Ameer Randolph
The Volvo VNL is a heavy-duty truck that has been in production since 1996. Known for its aerodynamic design, the VNL has set new standards in fuel efficiency, technology, versatility, safety, and design for long-haul trucks. The VNL comes in various models, including the VNL64300, VNL860, and VNL64T860, all of which offer different specifications and features. When it comes to fuel efficiency, the VNL utilizes advanced engines and torque packages to reduce fuel consumption and improve overall performance. With that in mind, what is the size of the fuel line on the Volvo VNL, and what other components make up its fuel system?
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What You'll Learn
Fuel efficiency improvements
The Volvo VNL is a Class 8 truck that has been redesigned to achieve industry-changing fuel efficiency improvements. The new model features improved aerodynamics, including a wedge-shaped cab, sloped windshield, and a more streamlined roofline. These design changes contribute to about 70% of the fuel efficiency gains in the new VNL, with the remaining gains coming from improvements under the hood.
Volvo Trucks North America has enhanced its fuel economy packages for the Volvo VNL, offering up to 16% improvement in fuel efficiency over baseline models. The D13 turbo compound (D13TC) engine is now standard in all VNL 740, 760, and 860 models, optimizing fuel efficiency and increasing value for customers through cost savings and overall ROI. The latest connectivity solutions, including over-the-air Remote Diagnostics software and Remote Programming upgrades, also contribute to securing best-in-class fuel efficiency throughout the truck's lifespan.
The Xceed package, available for the Volvo VNL 760 and 860 models, offers Advanced TC features and a full FlowBelow Aerokit, further reducing drag with an optimized wheelbase and trailer gap. These fuel efficiency packages can provide significant savings for fleet customers, with the potential to save more than $20,000 per vehicle.
Additionally, the Volvo VNL's fuel system parts and components play a crucial role in maintaining and optimizing fuel efficiency. Regular maintenance and replacement of parts such as fuel caps, fuel tank sending units, and fuel transfer pumps can help ensure the fuel system's proper functioning and contribute to overall fuel efficiency improvements.
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Fuel system parts and components
The Volvo VNL is a heavy-duty truck with impressive specifications. It boasts a powerful engine, advanced transmission, and a large fuel capacity. The fuel system in the Volvo VNL is designed to deliver optimal performance and fuel efficiency. The size of the fuel line is crucial to ensuring the efficient flow of fuel from the tanks to the engine.
The fuel system in the Volvo VNL comprises various parts and components that work together to ensure the efficient delivery of fuel to the engine. One of the key components is the fuel tank, which is designed to store a large capacity of fuel. The Volvo VNL is equipped with dual fuel tanks, each with a capacity of up to 100 gallons, ensuring a long-range capability between refuelling stops.
Another critical component of the fuel system is the fuel pump, which is responsible for drawing fuel from the tank and delivering it to the engine. The fuel pump gasket, manufactured by PAI®, is a direct-fit replacement part that ensures easy installation and consistent performance. In addition to the pump, the fuel transfer pump by PAI® ensures the smooth transfer of fuel within the system.
The fuel filter is another vital component of the Volvo VNL's fuel system. The Spin-On Fuel Filter by Baldwin Filters® is designed to keep the fuel clean, ensuring that the engine runs at maximum efficiency. The fuel filter element, also by Baldwin Filters®, is crafted with high-tech machinery to meet and exceed OE Standards, contributing to the overall reliability of the fuel system.
Other important fuel system parts and components in the Volvo VNL include the fuel tank cap, fuel injection pressure regulator, fuel injector, and the fuel water separator. The fuel tank cap by Gates® is designed with top-of-the-line technology, ensuring a secure seal for the fuel tank. The fuel injection pressure regulator by Dorman HD Solutions® helps optimise the vehicle's performance and fuel efficiency, while the Delphi® fuel injectors deliver pressurised and atomised fuel to each cylinder with precision. Additionally, the fuel water separator by Baldwin Filters® ensures the removal of water from the fuel, enhancing the overall performance and longevity of the fuel system.
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Fuel tank capacity
The fuel tank capacity of a vehicle is an important consideration, especially for long-haul journeys. The Volvo VNL is designed with fuel efficiency in mind, and different models have varying fuel tank capacities.
The 2025 Volvo VNL64300, for instance, has a 75-gallon fuel tank on the left-hand side and a 100-gallon fuel tank on the right-hand side. This model boasts a powerful 455 HP engine, I-Shift transmission, and a range of features for driver comfort and safety, including adaptive cruise control, dynamic steering, traffic sign recognition, lane change and blind-spot support, and a back-up camera and alarm.
The 2025 Volvo VNL860, on the other hand, features dual 100-gallon fuel tanks. This model also comes with a range of amenities, including a parking heater and cooler, an audio system with Bluetooth and satellite radio, and a microwave prep kit and refrigerator.
The 2015 Volvo VNL, according to a forum post, is estimated to have a fuel tank capacity of around 250 gallons, with some models having 200 or 275 gallons.
The VNL series from Volvo, including the VNL 740, VNL 760, and VNL 860, is known for its fuel efficiency, with the VNL 740 being specifically designed for long hauls and weight-conscious specialty applications. The latest VNL models build on Volvo's foundation of fuel efficiency, driver productivity, safety, and uptime, offering improved airflow, LED lighting, and redesigned working and living spaces.
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Fuel line fittings
When it comes to fuel line fittings for the Volvo VNL, you can find both genuine Volvo parts and aftermarket options. One example is the Volvo Truck Fuel Line Fitting with part number 20395030, which is a 3/8-inch plastic fitting. This particular fitting is designed to meet Volvo's standards and specifications, ensuring a precise and secure connection for the fuel lines.
In addition to fuel line fittings, there are other fuel system parts and components available for the Volvo VNL. For instance, you can find replacement fuel tank caps, such as the one offered by Gates®, which is designed with advanced technology to outperform competitors and provide a superior sealing experience. Another critical component is the fuel tank sending unit by Dorman HD Solutions®, which can help address issues related to noisy engines and the presence of exhaust fumes in the cabin.
The fuel transfer pump is another essential part of the fuel system. PAI® offers a fuel transfer pump designed with cutting-edge technology to ensure efficient fuel transfer and superior performance. Additionally, a regular locking fuel cap by Gates® is available, providing an extra layer of security and peace of mind. These fuel system parts work together to ensure the Volvo VNL's fuel system operates optimally, delivering fuel efficiently and securely to the engine.
It is worth noting that semi-truck air lines, hoses, and fittings are also crucial for safe braking in the Volvo VNL. These components, including flexible nylon tubing, durable rubber hoses, and brass fittings, contribute to smooth and effective braking performance. Regular checks and maintenance of these fittings are essential to ensure a confident and secure driving experience.
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Fuel efficiency vs load and route
The Volvo VNL is a Class 8 truck that has been designed with efficiency, safety, and driver productivity in mind. The VNL offers a wide range of highway applications, all while delivering big savings to customers.
Volvo Trucks North America (VTNA) has stated that the VNL's efficiency enhancements will provide fleets with significant savings on operating expenses. VTNA's testing of the new VNL has shown fuel efficiency improvements of more than 10%, which could save customers up to $6,000. These improvements are due to various factors, including improved aerodynamics, with a wedge-shaped cab, sloped windshield, and more streamlined roofline. The truck has been designed to use wind power to keep the engine cool and enhance operations, reducing the need for the fan to turn on.
The VNL also incorporates Volvo's idle management tool, the Volvo Parking Cooler, which reduces emissions and fuel costs during stops. This feature also enhances the resting experience for drivers by eliminating noise and vibrations from idling.
Additionally, Volvo Trucks has introduced the Xceed package for the VNL 760 and VNL 860 models, which further boosts fuel efficiency by up to 11%. This package achieves these gains through increased aerodynamic flow and reduced weight, with lightweight components such as a horizontal exhaust system, a dedicated rear axle, and limited fuel tank configurations.
The I-Torque feature, available on the D13TC engine, further improves fuel efficiency without compromising performance or productivity. The I-Shift technology, combined with I-See, uses real-time map-based data and GPS positioning to manage speed and gear-shifting in the most fuel-efficient way on any route or terrain. This technology also results in lower engine RPMs, creating a quieter and more pleasant driving experience.
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