Cummins Fleetguard LF14000NN Lube Filter Pack of 1 — 95mm Thread, 294.7mm Height for QST30/ISX15

The Cummins LF14000NN Fleetguard lube filter is a high-capacity replacement oil filter engineered to protect Cummins QST30 and ISX15 engines by trapping contaminants and preserving oil flow.

This LF14000NN (Fleetguard) lube filter is a single-pack replacement designed for heavy-duty diesel applications where durability and correct fit matter. Sized with a 294.69 mm overall height and a 95 mm metric thread diameter, it replaces DBL7900, P559000, and BD50000 and works with Cummins part 4367100 applications. Its metric thread form and specific gasket dimensions ensure a secure seal for engines such as the Cummins QST30 and ISX15 series.

How will this filter fit my Cummins engine?

The LF14000NN is made to match the dimensional and thread specifications used on many Cummins heavy-duty engines. Confirm compatibility by matching overall height, thread diameter, and cross-reference numbers before installation.

• Overall height: 294.69 mm (11.602 in)
• Thread diameter: 95 mm (3.74 in), thread pitch 2.5 mm
• Gasket outer diameter: 120.3 mm (4.736 in)
• Cross references: DBL7900, P559000, BD50000; Primary application Cummins 4367100

What performance features should I expect from the LF14000NN?

This Fleetguard lube filter provides a combination of contaminant-holding capacity and reliable oil flow for large-displacement diesel engines. Designed for heavy-duty duty cycles, it balances filtration efficiency and structural strength under high pressures and long service intervals.

• Robust metal housing for durability in demanding environments
• Precisely sized gasket and thread for leak-free sealing
• Constructed to match OEM form, fit, and function requirements

How do I install and maintain this replacement filter?

Installation follows standard spin-on filter procedures: clean the mounting surface, lubricate the gasket, hand-tighten to the recommended torque, and check for leaks after startup. Replace during scheduled oil changes or sooner if contamination indicators suggest earlier service.

• Inspect mounting area and gasket seat before installation
• Lubricate gasket with clean engine oil for a proper seal
• Start the engine and inspect for leaks; recheck torque after warm-up

Who is this for: Professional diesel technicians, fleet maintenance teams, and owner-operators who service Cummins QST30 or ISX15 engines and need a reliable, OEM-compatible oil filter. If you manage high-mileage trucks, heavy equipment, or long-haul diesel fleets, the LF14000NN offers the dimensions and cross-reference compatibility to maintain engine protection and uptime.