Description
Product Overview
The WIX Filters 33813 Heavy Duty Spin On Fuel Water Separator is a precision‑engineered component designed to protect the fuel system of SUVs and trucks from water contamination. Constructed from high‑strength machined metal, the separator features a pleated paper filter element that captures microscopic water droplets while allowing clean fuel to flow freely. The unit measures 4.8 x 4.8 x 6.2 inches and weighs just 1.2 pounds, making it easy to handle during installation and service. A built‑in drain plug provides a convenient way to release accumulated water without removing the filter, extending service intervals and reducing downtime. The product is rated for heavy‑duty use, meeting OEM specifications for a wide range of vehicle makes and models, and carries the OEM part number 33813 for direct fitment.
![[Product front view showing all components]](https://www.crispstore.store/wp-content/uploads/2026/07/0ceb55a205e044a8a8a7a03cb491be44.jpg)
Usage
This fuel water separator is ideal for use in off‑road, commercial, and performance driving scenarios where exposure to water, mud, and dust is common. Whether you are navigating rugged trails, hauling heavy loads, or simply commuting in rainy conditions, the separator safeguards the engine by preventing water‑induced corrosion, misfires, and loss of power. Installation is straightforward: the unit screws directly onto the fuel line using the standard spin‑on fitting, and the drain plug can be accessed without special tools. After installation, the separator continuously filters incoming fuel, trapping water in its internal chamber. Periodic draining—typically every 5,000 to 10,000 miles—keeps the system dry and maintains optimal fuel flow. The product is compatible with most gasoline‑powered SUVs and light trucks, making it a versatile addition to any fuel system maintenance routine.
Why Choose Us
Choosing the WIX Filters 33813 means selecting a component backed by decades of automotive filtration expertise. WIX is a recognized leader in performance parts, and this separator reflects the brand’s commitment to durability, reliability, and ease of service. The metal housing resists corrosion and impact, while the pleated paper element offers superior water‑capture efficiency compared to standard filters. Each unit undergoes rigorous quality testing to ensure it meets or exceeds OEM standards, providing peace of mind for both professional mechanics and DIY enthusiasts. Additionally, WIX offers comprehensive customer support, including detailed installation guides, troubleshooting resources, and a responsive warranty service that addresses any concerns promptly. By investing in this product, you benefit from a proven design, high‑quality materials, and a support network that keeps your vehicle performing at its best.
Key Features
- Heavy‑duty metal housing resists corrosion and impact for long‑term durability
- Pleated paper filter element captures water while allowing clean fuel flow
- Built‑in drain plug enables quick water removal without disassembly
- Spin‑on installation fits standard fuel lines, reducing labor time
- WIX customer support and warranty provide confidence and after‑sales assistance
FAQ
How often should I drain the water separator?
For most driving conditions, draining the separator every 5,000 to 10,000 miles is sufficient. In very wet or off‑road environments, more frequent draining—such as every 2,500 miles—helps maintain optimal performance.
Is this filter compatible with diesel engines?
The 33813 model is designed for gasoline‑powered SUVs and trucks. For diesel applications, WIX offers dedicated diesel fuel water separators that meet the specific requirements of diesel fuel systems.
Can I install the separator myself?
Yes. The spin‑on design uses standard fittings, and the installation process typically takes less than 15 minutes with basic hand tools. Detailed instructions are included in the product packaging and available on the WIX website.
What is the difference between this separator and a standard fuel filter?
A standard fuel filter primarily removes solid contaminants, while the water separator adds a dedicated chamber and drain plug to capture and remove water, protecting the engine from water‑related damage.
Does the separator affect fuel pressure?
No. The internal design maintains normal fuel flow rates and pressure, ensuring that engine performance is not compromised after installation.
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