Linageson FF63041NN Fuel Filter replacement for Cummins Fleetguard 5526400 — 2020–2022 L9 & B6.7 compatible, OEM-fit durability

Linageson FF63041NN is a direct-fit replacement fuel filter designed to match Cummins Fleetguard 5526400 performance for cleaner fuel delivery and prolonged engine reliability.

Built to OEM-aligned specifications, the Linageson FF63041NN fuel filter is engineered for medium- and heavy-duty diesel applications that use Cummins L9 and B6.7 powerplants from 2020–2022. It replaces part numbers FF63041NN and 5526400 and offers standardized manufacturing, durable materials, and a straightforward installation process. This product is sold as a single filter set and is backed by Linageson's around-the-clock online support for ordering and technical questions.

Will this fuel filter fit my Cummins L9 or B6.7 engine?

The Linageson FF63041NN is compatible with multiple 2020–2022 engine variants. It was developed to align with Stage V L9 engines, Stage V 6.7L OSB variants, and 2020 B6.7L engines, ensuring correct fit and function where Fleetguard 5526400/FF63041NN was specified.

• Replaces Fleetguard numbers: FF63041NN and 5526400
• Compatible with 2020–2022 Stage V L9 engines
• Compatible with 2020–2022 Stage V OSB 6.7L engines
• Compatible with 2020 B6.7L engines

How easy is it to install and maintain the filter?

Installation follows standard fuel filter change procedures and requires no special modifications. The unit is manufactured to consistent dimensional and sealing tolerances so it threads and seals reliably in place. Routine replacement intervals depend on engine use and fuel quality; keep service records and inspect during scheduled maintenance.

• Standardized dimensions for straightforward replacement
• Durable sealing surfaces to prevent leaks
• Installed as a single filter set—no extra parts required
• Follow manufacturer maintenance intervals for best results

What performance and durability features does this filter offer?

Linageson uses quality filter media and construction materials to trap contaminants and withstand the thermal and vibration demands of diesel engines. The result is consistent fuel delivery, protection for fuel injectors and pumps, and a long service life when paired with proper maintenance.

• High-efficiency filter media captures particulate and water
• Robust housing resists deformation under pressure and heat
• Manufactured to consistent quality standards for repeatable performance
• Online support available 24/7 for ordering and troubleshooting

Can I trust aftermarket filters like Linageson for heavy-duty use?

Quality aftermarket filters are a reliable option when they meet or exceed OEM specifications and are produced with controlled materials and processes. Linageson emphasizes standardized manufacturing and quality control to deliver performance comparable to original equipment for the listed engine models.

• Designed to meet OEM form, fit, and function for listed engines
• Quality materials and consistent production practices
• Sold as a complete filter set to simplify replacement
• Customer support available online around the clock

Who is this for: The Linageson FF63041NN fuel filter is intended for fleet managers, mechanics, and owners of vehicles powered by 2020–2022 Cummins Stage V L9 and 6.7L engines, or 2020 B6.7L engines, who need a reliable replacement for Fleetguard part numbers FF63041NN/5526400. It's suited to workshops and operators seeking an aftermarket filter that offers consistent sizing, good contaminant capture, and straightforward installation backed by continuous online support.