Is the LF14000NN Really Better Than the Older LF9009 or LF9070?

When I first heard about the LF14000NN, my immediate reaction was, “Is this really what I need? Or is it just the latest gadget with a higher price?” I’ve been using LF9009 filters in my Cummins engines for years without any major issues. So, I decided to dig deeper. Here are my findings.

In terms of filtration technology, yes, the LF14000NN is truly better than the older LF9009 or LF9070. The LF14000NN uses StrataPore™ + NanoNet™ filtration technology, which offers a higher filtration accuracy and captures particles sized 4–40 µm. The older LF9009 or LF9070 uses StrataPore™ technology, which captures particles sized 10–40 µm.

While the LF14000NN is technically superior, it’s not always necessary, and you don’t always need to spend more money to use it all.

• If you have a newer generation Cummins heavy-duty engine, especially one with exhaust gas recirculation (EGR), a DPF (particulate filter), or an SCR (selective catalytic reduction) exhaust aftertreatment system (e.g., EPA 2010+ ISX/X15, ISB6.7, QSB), or heavy-duty equipment operating in dusty/high-smoke conditions, the LF14000NN is a must-have.
• If you have an older engine (e.g., a Cummins ISX (pre-EPA 2007), N14, M11, older ISB/ISC, etc.) and you already change your oil regularly, then the LF9009 or LF9070 will still suffice.

Here’s why.

First, technical comparison- LF14000NN vs. LF9009/LF9070, which is better?

• LF9009 / LF9070 → StrataPore™: Captures particles 10–40 µm
• LF14000NN → StrataPore™ + NanoNet™: Captures particles 4–10 µm

read more StrataPore™:Can the LF3970 Really Last 500 Hours Between Oil Changes, or Is That Just Marketing?

The LF14000NN → StrataPore™ + NanoNet™ filter technology adds a layer of ultra-fine nanofiber NanoNet™ to the older LF9009 / LF9070 models. It specifically captures particles 4–10 µm in size. Although invisible to the naked eye, these tiny particles slowly wear out bearings, piston rings, and injectors in the engine. NanoNet™ captures even more small particles, reducing chronic engine wear. This more thoroughly traps suspended contaminants in the oil, keeping the oil cleaner and extending oil change intervals.

NanoNet™ is Fleetguard’s “nanonet upgrade” to StrataPore, enabling the filter to better handle the ultrafine contaminants produced by modern diesel engines. The new generation of Cummins heavy-duty engines, particularly those equipped with exhaust gas recirculation (EGR), DPFs (particulate filters), and SCRs (selective catalytic reduction), have stricter emissions standards, generating finer, more difficult-to-filter soot particles. Because these engines carry high pollution loads, using older StrataPore filters (such as the LF9009/LF9070) can retain large particles, but small particles and high soot concentrations can accelerate wear. NanoNet™ is designed for these high-load, high-pollution environments.

Fleetguard data:

•  99% efficiency at 30 microns (captures virtually all large particles)
• ~72% efficiency at 10 microns (a significant improvement over the ~50% efficiency of a single-layer StrataPore)
•  Higher dirt-holding capacity → Can hold over 100g of pollutants, 15–20% more than the older LF9009 filter.

It can be seen that the main differences between LF14000NN vs LF9009 / LF9070

Secondly, use comparison – is the LF14000NN really better than the older LF9009 / LF9070? Do I really need to switch?

While the LF14000NN is technically superior, it’s not a complete winner in every aspect. For example, in some older Cummins engines, the LF9009/ LF9070 is adequate, and there’s no need to upgrade them.

• Older Cummins ISX (pre-EPA 2007), N14, and M11 engines have less stringent emissions regulations and relatively low soot loads. The LF9009 or LF9070 provides adequate protection. Switching to the LF14000NN is certainly better, but not a must.
• For light/medium-duty trucks (older ISB, ISC, etc.) that primarily operate on highways, operate in relatively clean conditions, and frequently change their oil (every 200–250 hours/10,000 miles), the LF9009 is fine. These engines generate low levels of soot particles, primarily large ones, which StrataPore can adequately intercept. Furthermore, if you already frequently change your oil (not aiming for 500-hour/20,000–30,000-mile oil changes), the NanoNet’s advantages are minimal.

Because engines with exhaust after-treatment systems like the new Cummins ISX/X15, ISB6.7, and QSB series (with EGR/DPF/SCR) produce finer, more difficult-to-filter soot, the LF14000NN intercepts more small particles, reducing chronic engine wear. Therefore, the LF14000NN is essential.

• The Cummins ISX15/X15 series, models from EPA 2010 onwards, have stricter emissions standards and produce finer, more challenging to filter soot particles. The official recommendation is the LF14000NN, as NanoNet™ can better intercept particles sized 4–10µm, protecting the engine and aftertreatment system.
• The Cummins ISB6.7/QSB series (with EGR/DPF) is commonly used in medium-duty trucks, construction machinery, school buses, and RVs. Long-term use of older filters (such as the LF9009) in these engines may result in excessive fine particles in the oil, leading to accelerated wear.
• Construction machinery and high-load applications (excavators, mining vehicles, and agricultural machinery) experience particularly high levels of dust and soot, making the LF14000NN’s high capacity and efficiency crucial.

Finally

Yes, from a technical perspective, the LF14000NN isn’t just a component upgrade. Compared to the LF9009/LF9070, its filtration precision has been upgraded, capturing more fine particles and increasing its dirt holding capacity. For many modern Cummins-powered trucks, this is both worthwhile and necessary. If you drive an older model and frequently change the oil, it’s more economical to stick with the LF9009.

Lube Filters

Cummins Diesel Lube Filter Luber-Finer filters provide superior filtration solutions for a wide range of applications, including heavy-duty trucks, construction equipment, agricultural machinery, and power generation systems. Genuine Lube Filter…

Read More Lube Filters

Contact Us

If you have any questions or need more information, please feel free to contact us at any time.

Name *

Email *

Phone

Website / URL

Message *

Submit