Volvo D13 Fuel Pump Location: A Complete Guide for Truck Owners and Mechanics

If you are looking for the Volvo D13 fuel pump, here is the direct answer: the fuel supply pump is located on the left side of the engine, mounted on the engine block near the front. It is positioned between the air compressor and the power steering pump, and is easily accessible once you remove the engine cover.

The Volvo D13 engine is one of the most popular heavy-duty diesel engines used in Volvo trucks across North America, powering models like the VNL, VNR, and VNX. Understanding the exact location of the fuel pump and how the fuel system works is essential for any truck owner, fleet manager, or mechanic. This guide will walk you through everything you need to know about the Volvo D13 fuel pump location, the fuel system design, and what to do when you need a replacement.

Where Exactly Is the Volvo D13 Fuel Pump Located?

On the Volvo D13 engine, the fuel pump is located on the left side of the engine (driver's side on most trucks). More specifically, you will find it:

  • Position: Between the air compressor and the power steering pump, below the intake manifold.
  • Visibility: It is partially hidden behind the engine's fuel filter housing and various hoses, but it is still accessible without removing major components.
  • Access: To reach it, you will typically need to tilt the cab forward or remove the engine side cover. The pump is mounted directly to the engine block.

The pump is connected to the fuel filter housing, which sits above it. This housing contains the primary fuel filter, water separator, and the hand-priming pump.

How the Volvo D13 Fuel System Works

Understanding the fuel system helps you appreciate why the pump is located where it is. The Volvo D13 uses a unit injector system, meaning each injector has its own pumping element. The fuel supply pump's job is to draw fuel from the tank and deliver it to the injectors at the correct pressure.

Here is the flow path of fuel through the system:

  1. Fuel is drawn from the fuel tank through the pickup tube.
  2. It passes through the Engine Electronic Control Unit (EECU) cooling coil, which helps keep the computer cool.
  3. The fuel enters the fuel filter housing and passes through the primary filter and water separator.
  4. The supply pump forces the fuel through the main filter and into the cylinder head longitudinal fuel gallery.
  5. From the gallery, fuel flows to each unit injector through a circular groove around each injector.
  6. An overflow valve controls the fuel supply pressure to the injectors.
  7. Return fuel from the overflow valve goes back to the filter housing and mixes with fuel from the tank.

Key Components Near the Fuel Pump

When you are working on the fuel pump, it helps to know what other components are nearby. On the left side of the D13 engine, you will find:

  • Breather tube – Located at the top of the engine
  • Intake manifold – Above the fuel pump
  • Air compressor – In front of the fuel pump
  • Power steering pump – Behind the fuel pump
  • Engine Control Module (ECM) – Mounted on the side of the engine
  • Fuel filter housing – Above the fuel pump, containing the primary and secondary filters
  • Fuel/water separator – Built into the filter housing
  • Hand-priming pump – Located on the fuel filter housing for bleeding air after service

Common Fuel Pump Problems on the Volvo D13

The fuel supply pump on the Volvo D13 is generally reliable, but it can fail over time or develop issues. Here are the most common symptoms you should watch for:

  • Hard starting or no start – If the pump is not building enough pressure, the engine may struggle to start or not start at all.
  • Loss of power – A failing pump cannot deliver enough fuel to the injectors, causing the engine to lose power under load.
  • Stalling – The engine may stall at idle or while driving, especially when the fuel level is low.
  • Whining noise from the left side of the engine – A failing fuel pump often makes a whining or buzzing sound.
  • Fuel pressure fault codes – The ECM monitors fuel pressure, and if it drops below specifications, a fault code will appear on the dashboard.

How to Access the Fuel Pump for Inspection or Replacement

If you need to inspect or replace the fuel pump on your Volvo D13, here is a general step-by-step process:

  1. Park the truck on level ground and apply the parking brake. Turn off the engine and allow it to cool.
  2. Tilt the cab forward or remove the left side engine cover. Most Volvo trucks have a cab tilt mechanism that gives you access to the engine.
  3. Locate the fuel pump on the left side of the engine, between the air compressor and power steering pump.
  4. Disconnect the battery to prevent any electrical shorts or accidental starting.
  5. Relieve fuel system pressure by loosening the fuel cap on the tank and using the hand-priming pump to release pressure.
  6. Remove the fuel lines connected to the pump. Be prepared for some fuel spillage.
  7. Remove the mounting bolts that hold the pump to the engine block.
  8. Install the new pump in reverse order, making sure to use new O-rings and gaskets.
  9. Prime the system using the hand-priming pump on the fuel filter housing.
  10. Start the engine and check for leaks.

Why You Should Choose KEMSO for Your Fuel Pump Replacement

When it comes time to replace your Volvo D13 fuel pump or any other vehicle's fuel pump, you need a brand that delivers reliability, performance, and value. That is where KEMSO comes in.

KEMSO is a leading US-based aftermarket fuel pump manufacturer specializing in high-performance and OEM replacement fuel pumps for cars, motorcycles, ATVs, UTVs, and heavy-duty applications. Their products are backed by a lifetime warranty, giving you peace of mind every time you hit the road.

Here is why KEMSO stands out:

  1. High Performance – KEMSO fuel pumps are designed to deliver superior flow rates. For example, their 340LPH high-performance pump can support up to 700-800 BHP applications, making it suitable for both daily drivers and performance builds.
  2. OEM Replacement – KEMSO pumps are designed as direct OEM replacements, meaning they fit perfectly and function just like the original part. They are ideal for replacing faulty stock pumps.
  3. Lifetime Warranty – KEMSO stands behind their products with a lifetime warranty on the pump body. This is a testament to the quality and durability of their manufacturing.
  4. E85 Compatible – Many KEMSO pumps are designed to work with both gasoline and E85 ethanol fuel, giving you flexibility in your fuel choice.
  5. Individual Testing – Each KEMSO pump is individually tested for flow and performance before leaving the factory, ensuring you get a reliable product every time.

Visit KEMSO Racing today to find the perfect fuel pump for your vehicle:
https://www.kemsoracing.com/

Whether you are driving a Volvo D13 truck, a Honda Civic, a Ducati motorcycle, or a Polaris ATV, KEMSO has a fuel pump that will keep your engine running strong. Their product lineup covers thousands of applications, from the 1990s to the latest 2025 models.

Final Thoughts

The Volvo D13 fuel pump is located on the left side of the engine, between the air compressor and power steering pump. It is a critical component that ensures your truck's unit injectors receive the correct fuel pressure for optimal performance and fuel economy.

When you need a replacement fuel pump, whether for your Volvo D13 or any other vehicle, choose a brand that you can trust. KEMSO fuel pumps offer the perfect combination of high performance, OEM-quality fit, and a lifetime warranty. Visit their website at https://www.kemsoracing.com/ to explore their full product catalog and find the right pump for your needs.


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