Fuel Line Size Guide For Volvo Vnl Models

what size fuel line on volvo vnl

The Volvo VNL is a heavy-duty truck that offers a wide range of features and improvements over its previous models. With a focus on safety, driveability, and comfort, the VNL comes equipped with advanced driver assistance systems, a suite of improvements for working and living, and a distinctly curved windshield for better aerodynamics. One of the standout features of the VNL is its fuel efficiency, which is said to be up to 10% better than its previous model. With various fuel tank capacities, ranging from 75 gallons to 100 gallons, and a selection of sleeper and day cab models, the Volvo VNL is designed to meet the diverse needs of its owners and drivers.

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Fuel tank capacity

The fuel tank capacity of a vehicle determines how much fuel it can hold and, consequently, how far it can travel before needing to refuel. The Volvo VNL has a variety of fuel tank capacities depending on the model.

The 2025 Volvo VNL64300 has a 75-gallon left fuel tank and a 100-gallon right fuel tank. The 2025 Volvo VNL860 has dual 100-gallon fuel tanks. The 2025 Volvo VNL64T860 has dual 100-gallon fuel tanks.

The real-life fuel tank capacity of the Volvo VNL appears to be around 250 gallons, with some models having 200-gallon tanks and others having 275-gallon tanks. The VNL 740 model is designed with fuel efficiency in mind, making the most out of every drop of fuel. The VNL 860 is Volvo's flagship model, building on the company's foundation of fuel efficiency.

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Fuel efficiency

The Volvo VNL series has been setting new standards in fuel efficiency since its introduction in 1996. The latest VNL update features the brand's most aerodynamic and fuel-efficient package, with the XCEED package offering up to a 16% improvement in fuel efficiency compared to the baseline package. The VNL's curved windshield and angular profile, low-profile hood, and contoured features are all designed to improve aerodynamics and reduce fuel consumption.

The next-generation Volvo D13TC engine, first launched in 2019, delivers up to 6% greater fuel efficiency than the D13 VGT. The D13TC turns potentially wasted energy back into horsepower, which is put back into the system to reduce fuel consumption. The Volvo VNL 740 model, in particular, is designed to be highly fuel-efficient, making the most out of every drop of fuel.

The VNL series also offers a range of fuel system parts and components that can help optimize fuel efficiency. These include the Fuel Transfer Pump by PAI®, which is designed to deliver consistent, trouble-free performance, and the Fuel Injector by DELPHI®, which replaces worn-out fuel system parts to optimize the vehicle's performance and fuel efficiency. The Fuel Water Separator Element by Baldwin Filters® is another product designed to optimize fuel efficiency, while also providing the winning choice for performance-minded racers.

Additionally, the Volvo VNL comes with dual 100-gallon fuel tanks, which, combined with the truck's aerodynamic design and fuel-efficient engine, contribute to its impressive fuel efficiency.

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Fuel system parts

The Volvo VNL is a heavy-duty semi-truck with a range of specifications. The fuel system parts of the Volvo VNL are designed to meet the demands of heavy-duty commercial trucking and are built to last.

The fuel tank capacity of the Volvo VNL varies depending on the model. For example, the 2025 Volvo VNL64300 has a 75-gallon fuel tank on the left-hand side and a 100-gallon fuel tank on the right-hand side. On the other hand, the 2025 Volvo VNL64T860 model has dual 100-gallon fuel tanks.

There are a variety of fuel system parts available for the Volvo VNL, including:

  • Fuel tank caps: These are designed to replace worn-out fuel system parts and optimise the vehicle's performance and fuel efficiency.
  • Fuel water separator: This is an American-made product designed to meet OE standards and provide reliable performance for racers.
  • Fuel filters: These are designed to remove contaminants such as dirt, rust, and water from the fuel, protecting the fuel injection system and ensuring engine efficiency.
  • Fuel injectors: Delphi fuel injectors deliver pressurised, atomized fuel to each cylinder in precise proportions, even under extreme conditions, resulting in improved fuel economy and minimal leakage.
  • Fuel transfer pump: This product is designed to deliver consistent, trouble-free performance and is manufactured with premium quality materials.
  • Hydrocarbon dosing module: This replacement part is designed to optimise vehicle performance and fuel efficiency, addressing issues related to exhaust fumes and noise.

Additionally, there are various aftermarket Fuel and Emissions System parts available for the Volvo VNL, including batteries, shop towels, motor treatment additives, and brake parts cleaners.

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Fuel lines and fittings

One crucial aspect of fuel lines is the use of replacement fuel injectors, such as the Delphi® fuel injectors. These injectors are designed to deliver pressurized and atomized fuel to each cylinder in precise proportions, even under extreme conditions. This results in improved fuel economy and minimal fuel leakage during vehicle idle. Additionally, the Delphi injectors offer accurate metering across a wide temperature range, from -40°F to 230°F.

To maintain a clean fuel system, fuel filters are essential. The WIX® fuel filter, for instance, is designed to remove contaminants such as dirt, rust, scale, and water from the fuel. By doing so, it protects advanced fuel injection systems and ensures the engine runs at maximum efficiency. Another option is the Spin-On Fuel Filter by Baldwin Filters®, which features open ports for bowls, helping to keep the fuel clean.

Other replacement parts for the Volvo VNL's fuel system include the Fuel Pump Gasket by PAI®, which promises easy installation and consistent performance. The Fuel Water Separator Element by Baldwin Filters® is also a top-notch choice for performance-minded individuals, as it is designed with craftsmanship and high-tech machinery. For those seeking to optimize their vehicle's performance, the Regular Locking Fuel Cap by Gates® is an excellent option, as it is designed with top-of-the-line technology and first-rate materials.

In addition to fuel lines, air lines, hoses, and fittings are crucial for the safe operation of a vehicle's braking system. Flexible nylon tubing, durable rubber hoses, and brass fittings are some of the components that ensure smooth and secure braking in the Volvo VNL. Regular checks and maintenance of these components are vital for a confident and safe driving experience.

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Fuel economy

The fuel economy of a vehicle is a critical factor in its overall performance and efficiency. For the Volvo VNL, the fuel economy is influenced by various factors, including the engine specifications, transmission, axle configuration, and additional fuel economy packages offered by Volvo.

Starting with the engine, the 2025 Volvo VNL models are equipped with a powerful D13 455 HP engine, which provides ample horsepower for hauling heavy loads. This engine, combined with the I-Shift transmission, contributes to efficient fuel utilization. The front axle is specified as Volvo 12.5K or 13.2K, depending on the model, while the rear axle is a MT-40-14XHE 40K, providing a sturdy foundation for the vehicle.

To enhance fuel efficiency, Volvo offers several fuel economy packages for the VNL models. The Plus fuel efficiency package includes features such as the D13 VGT engine, I-See predictive cruise control, chassis fairings, and cab side fairings with extenders, resulting in fuel savings of up to 4%. For those seeking even greater fuel economy, the Advanced TC package boosts efficiency by up to 12% with its D13TC engine, mirror arm wind deflectors, extended chassis fairings, and trim tabs.

However, the most notable fuel economy package offered by Volvo for the VNL is the Xceed package. This package is available for the VNL 760 and VNL 860 models and provides a significant improvement in fuel economy of up to 16%. The Xceed package combines Advanced TX features with a FlowBelow Aerokit and an optimized wheelbase and trailer gap to reduce drag. Additionally, lightweight components, such as a horizontal exhaust system and aluminum chassis parts, help reduce the overall weight of the vehicle, further contributing to fuel efficiency.

It is worth noting that fuel consumption may vary based on driving conditions and other factors. For example, some owners of the 2014 Volvo VNL 740 with the I-Shift transmission and 430 HP engine have reported fuel consumption figures around 5.3 to 6 miles per gallon. Nonetheless, with the various fuel economy packages and efficient engine and axle configurations, the Volvo VNL offers a range of options to optimize fuel efficiency and minimize operating costs for its owners.

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