Genuine Fleetguard FF5971NN Fuel Filter (Pack of 6) | OEM NanoNet® Technology for Cummins 6.7L

Don't compromise on the world’s most advanced fuel protection. The Genuine Fleetguard FF5971NN (Pack of 6) features patented NanoNet® media, designed specifically to capture 98.7% of all particles as small as 4 microns. This is the factory-spec engine-mounted filter for 2019+ Ram Cummins owners who demand absolute injector safety. By choosing the bulk 6-pack, you're securing 90,000 miles of premium protection against the microscopic "silt" that causes catastrophic fuel system failure.

🧠 WHY THIS MATTERS

At Valtrix Powertrain, we focus on parts that ensure engine longevity. The FF5971NN represents the pinnacle of diesel filtration. Unlike standard paper filters, NanoNet® technology uses a dense web of synthetic fibers that won't "un-load" captured dirt even under heavy engine vibration or high-pressure fuel surges. This secondary filter provides the final polish required for the 2019+ high-pressure common rail system, ensuring your injectors remain within factory tolerances for power and efficiency.

🆚 OEM vs AFTERMARKET

📦 WHAT’S INCLUDED

• (6) Genuine Fleetguard FF5971NN NanoNet® Fuel Filters

• (6) New High-Spec Sealing O-Rings (Pre-packaged with each filter)

• Factory Bulk Packaging (Ensuring maximum cleanliness and authenticity)

⚙️ COMPATIBILITY

This is the engine-mounted (under-hood) secondary fuel filter for the following applications:

• Ram 2500 / 3500 / 4500 / 5500: 2019, 2020, 2021, 2022, 2023, 2024+

• Cummins Engine Series: B6.7 Turbo Diesel (Gen 5)

• Interchange: Mopar 68436631AA, 68436631AB, Cummins 5526400.

• 💡 Note: This filter is specifically for 2019 and newer models. Always pair this with the frame-mounted separator (FS20172) for a complete system service.

🚨 SIGNS YOU NEED THIS

Protect your high-pressure fuel pump. Stock up and replace your FF5971NN if:

• Fuel Rail Pressure Drop: Engine loses power during heavy towing or grades.

• Rough Idling: The engine "stumbles" or feels inconsistent at stoplights.

• Service Counter: You’ve hit the 15,000-mile manufacturer service interval.

• Bulk Savings: You manage a fleet and want to lower your overall cost-per-service.

🛒 WHY BUY FROM VALTRIX

• Unbeatable Bulk Savings: Get the lowest price-per-filter with our 6-pack.

• 100% Genuine Fleetguard: We are authorized distributors of Cummins-sourced products.

• Fast USA Shipping: We stock bulk items in the US for immediate dispatch.

• Diesel Industry Experts: Our team can verify fitment using your VIN or Engine Serial Number (ESN).

Invest in the best name in diesel filtration. Don't overpay for single filters at the dealership. Secure your Cummins' future with the exact technology it was born with.

👉 [ADD TO CART] and secure your 6-pack of Fleetguard FF5971NN today.

❓ FAQ

Q: Is the FF5971NN the same as the Mopar 68436631AA?

A: Yes. Fleetguard is the manufacturer for the Mopar-branded version. The FF5971NN is the Fleetguard-branded version of the exact same NanoNet® technology.

Q: Do I need a special tool to install this?

A: A 1-1/8" (28mm) socket is required to remove the fuel filter cap on the engine-mounted canister under the hood.

Q: Why do I need a 6-pack?

A: Cummins 6.7L engines require fuel filter changes every 15,000 miles. Buying a 6-pack covers your filtration needs for the next 90,000 miles, saving you money and preventing maintenance delays.