Who Really Makes Mopar Diesel Fuel Filters?

If you own a Ram truck or any diesel-powered vehicle under the Dodge, Jeep, or Chrysler family, chances are you’ve used a Mopar diesel fuel filter—or are considering one. These filters are often recommended by dealerships and trusted mechanics alike. But there’s a question many owners still ask: Who really makes Mopar diesel fuel filters?

While the Mopar filters logo is proudly stamped on these filters, the actual manufacturing is typically outsourced. In this post, we’ll explore who manufactures Mopar diesel fuel filters, why it matters, and whether they’re truly worth choosing over aftermarket options.

What Is a Mopar Diesel Fuel Filter?

A Mopar diesel fuel filter is an Original Equipment Manufacturer (OEM) filter designed to trap dirt, debris, rust, and water particles before they can reach your engine’s fuel injectors. Clean fuel is essential for proper combustion, especially in high-pressure diesel systems like the 6.7L Cummins engine found in Ram trucks.

Mopar filters are known for:

• OEM quality assurance
• Exact fitment for Dodge, Ram, Jeep, and Chrysler diesels
• Integrated water separators
• Reliable micron filtration (typically 3–5 microns)

But the real question isn’t just what these filters do—it’s who actually builds them behind the scenes.

So, Who Makes Mopar Diesel Fuel Filters?

While Mopar is the brand name under Stellantis (formerly FCA), the actual manufacturing of Mopar diesel fuel filters is done by third-party suppliers. These companies produce filters based on strict OEM specifications and quality control standards.

One of the main manufacturers is Fleetguard, a division of Cummins Filtration. Many Mopar-branded diesel filters—especially for 6.7L Cummins engines—are co-developed or made by Fleetguard, which is known for its high-performance diesel filtration systems.

Other manufacturing partners have included:

• Purolator – known for oil and air filters
• Champion Laboratories – manufactures a range of private-label filters
• Donaldson and Wix – sometimes involved in heavy-duty filtration components
• So while the filter says Mopar, you’re often getting Fleetguard-level quality or better.

Why Does the Manufacturer Matter?

Knowing who makes your diesel fuel filter is more than trivia—it directly impacts engine performance and longevity.

Here’s why:

• Trust in the Brand: Fleetguard and Donaldson are top-tier diesel filter producers. If Mopar partners with them, it’s a sign of quality.
• Warranty Compatibility: OEM-manufactured filters often help protect your vehicle's warranty.
• Better Fitment: OEM filters match your engine design exactly. No need for guessing or retrofitting.
• Proven Filtration Specs: You get micron ratings and water separation performance that matches Cummins requirements.

Why Choose a Mopar Diesel Fuel Filter?

If you’re still deciding between a Mopar filter or an aftermarket alternative, here’s what Mopar brings to the table:

• OEM-approved for 6.7L Cummins engines
• Micron rating as low as 3 microns for cleaner fuel delivery
• Integrated water separator to protect high-pressure injectors
• Durable construction that withstands tough driving conditions
• Simple installation and perfect fit

Want to buy an authentic Mopar diesel fuel filter? Visit Mopar Truck Filters—your go-to source for genuine fuel and oil filtration parts. You get trusted OEM quality with fast, reliable shipping.

Key Takeaways

Mopar diesel fuel filters are not made in-house—they’re outsourced to top manufacturers like Fleetguard. They are OEM-approved, making them ideal for your Cummins-powered Ram trucks and other diesel applications. These filters provide high-level fuel cleanliness, which is essential for modern diesel engine health and performance. Choosing Mopar ensures warranty protection, exact fit, and trusted engineering. For the best results, always replace your fuel filter at the recommended interval and choose OEM parts from reliable sellers like Mopar Truck Filters.

FAQs

1. Who actually makes Mopar diesel fuel filters?

 Mopar filters are primarily manufactured by third-party companies like Fleetguard (Cummins Filtration), Champion Laboratories, and Purolator, based on OEM standards.

2. Are Mopar diesel fuel filters better than aftermarket brands?

 Yes, especially when compared to generic or off-brand filters. Mopar filters are built to OEM specs, ensuring the right micron rating and water separation performance.

3. Can I use a non-Mopar filter in my 6.7L Cummins engine?

 You can, but be cautious. Non-OEM filters may not offer the same fit, filtration efficiency, or protection for your warranty.

4. What’s the micron rating of a Mopar diesel fuel filter?

 Most Mopar diesel fuel filters offer 3–5 micron filtration, which is optimal for removing contaminants in modern diesel systems.

5. Where can I buy authentic Mopar diesel fuel filters?

 You can find them at Mopar Truck Filters, a trusted source for genuine Mopar and Cummins filter components.