Replacing Fuel Filter: Workhorse W22 Chassis Guide

Changing the fuel filter on a Workhorse W22 chassis can be a challenging task, but with the right tools and knowledge, it is certainly achievable. The fuel filter is typically located on the driver's side of the chassis, tucked up on the frame rail behind the left front tire, and there are two types of filters used on this chassis. The original style is mounted with four tie-down clamps, while the updated style uses a GM-style filter with an adapter. When changing the fuel filter, it is important to relieve the pressure from the system by opening the Schrader valve, which is located on top of the engine and resembles a tire valve stem. Additionally, it is recommended to use a flare nut wrench on the fuel line fitting to avoid rounding it off. While changing the fuel filter, it is also a good idea to wear goggles or safety glasses to protect your eyes from any spilling fuel.

The fuel filter is located on the driver's side, behind the left front tire

To change the fuel filter on a Workhorse W22 chassis, you'll first need to locate it. The fuel filter is located on the driver's side, tucked up on the frame rail behind the left front tire.

Workhorse has used different fuel filter styles over the years, so before attempting to change the filter, it's important to check which type your vehicle uses. The original style is no longer readily available, but an updated version can be purchased and used with a standard GM fuel filter.

When changing the fuel filter, it's important to relieve the pressure from the system. You can do this by locating the Schrader valve on top of the engine, which looks like a tire valve stem. Depress the centre pin to release the pressure, similar to letting air out of a tire. There won't be a large amount of fuel released, but it's a good idea to have a rag handy to catch any spills.

Additionally, it's recommended to use split box wrenches or open-ended wrenches when removing the fuel lines from the filter. These can help make the job easier when working in the tight space against the frame rail.

Always wear safety goggles or glasses when performing maintenance on your vehicle, especially when working with fuel lines, to protect your eyes from any potential spills or leaks.

The fuel filter is tucked up on the frame rail

The fuel filter on a Workhorse Chassis is tucked up on the inside of the frame rail, towards the back, near the tank. It is a simple job to replace the fuel filter, but there are a few precautions to be aware of. Firstly, let the RV sit for a while before attempting to remove the filter, and take the fuel filler cap off to ensure no pressure has built up. It is also important to wear safety glasses and wrap a rag around the first fitting, as there may be residual pressure in the system, which could result in a small spray of gas.

The fuel filter is held in place with fittings that require a wrench to remove. The filter itself is a straight in and straight out model, and it is important to ensure that the new filter is installed in the correct direction, according to the direction of the flow arrow.

For a 2003 Workhorse Chassis, the original AC number of the filter was AC GF481, but this was changed to AC GF652. Wix filter 33481 or Fram G3727 will also fit.

There are two types of filters: the original and the updated version

When it comes to changing the fuel filter on a Workhorse W22 chassis, there are two types of filters to consider: the original filter and the updated version.

The original fuel filter is designed to fit the W22 chassis specifically. It is important to ensure that you are using the correct part number when replacing this filter, as there are different variations available depending on the year of your W22 chassis. For example, the WIX Fuel Filter is compatible with the 2001-2007 W22 chassis, while there are different WIX filters for the 2009 model. The original fuel filter can be purchased from GM or through a Workhorse service center.

The updated version of the fuel filter is an aftermarket solution. This option includes an adapter that allows for the use of a different, cheaper replacement filter. The OEMtech bypass kit is one such example, designed for the 2004 and newer year chassis. This kit simplifies the inlet and outlet connections, allowing for a more cost-effective filter option without sacrificing quality.

Both options are viable choices for replacing the fuel filter on a Workhorse W22 chassis. The original filter can be sourced from GM or Workhorse directly, while the aftermarket solution offers a more affordable alternative with the use of an adapter. It is important to consider the specific year of your W22 chassis when selecting the appropriate fuel filter and to follow proper installation procedures to ensure a successful replacement.

In addition to the two types of fuel filters, it is worth noting that there are also different types of fuel filter kits available. These kits typically include a set of primary and secondary fuel elements, providing all the necessary filters for a complete fuel filter change. When considering a fuel filter replacement, it is recommended to refer to the specific recommendations and procedures outlined for your Workhorse W22 chassis.

You can buy a replacement filter from GM

When it comes to changing the fuel filter on your W22 Workhorse Chassis, you have a few options for acquiring a replacement filter. One option is to purchase a replacement filter directly from General Motors (GM). GM is the original equipment manufacturer (OEM) for Workhorse, so you can be confident that their fuel filter will be a direct fit for your W22 chassis.

To ensure you get the correct fuel filter for your specific W22, it's important to have your vehicle's information readily available. This includes the model year, engine type, and chassis details. With this information, you can either visit a local GM dealership or their online parts store to find the correct fuel filter for your W22.

Another option for purchasing a replacement fuel filter is to explore online retailers and marketplaces, such as eBay. When searching for a fuel filter on eBay, you can filter the results by your specific Workhorse chassis model, engine size, and year. This will help ensure you find a compatible fuel filter. It's important to carefully review the product descriptions and confirm the compatibility of the fuel filter with your W22 before making a purchase.

Additionally, there are specialty auto parts retailers, such as Advance Auto Parts, that carry fuel filters for the Workhorse W22. They offer both OEM and aftermarket options, providing a range of prices to suit your budget. When purchasing from Advance Auto Parts, you can either opt for delivery or in-store pickup, depending on your preference and location.

Lastly, there are online forums dedicated to RV enthusiasts, where you can seek advice and recommendations from fellow W22 Workhorse Chassis owners. These forums often provide valuable insights and tips for maintenance tasks, such as changing the fuel filter.

Remember, when working on your fuel system, it's important to take the necessary safety precautions and refer to the service manual for your vehicle.

You can also buy an aftermarket adapter to allow the use of a cheaper, simplified filter

If you're looking to change the fuel filter on your W22 Workhorse chassis, you may have noticed that the Napa 3481 filter won't work. While the fuel filter is available from GM, there is an alternative option. You can purchase an aftermarket adapter from OEM-Engineering, which will allow you to use the GF481/652 style filter. This adapter has been well-received by Workhorse Chassis Owners, who have praised its excellent quality and money-saving benefits.

The OEM-Engineering adapter simplifies the filter by incorporating the complexity of the inlet and outlets into its design. This means that a cheaper, simplified filter can be used as a replacement without compromising on quality. This is a great option if you're looking for a cost-effective solution to your fuel filter needs.

When changing the fuel filter on your W22 Workhorse chassis, it is also recommended to use a flare nut wrench on the fuel line fitting to avoid rounding it off. This can be a tricky process, so ensure you are well-prepared and flexible enough to work in the tight space.

Frequently asked questions