SPEARHEAD Max Thrust Engine Air Filter MT-440 — OEM-fit for Select Nissan/Infiniti/Jeep, High Dust Capacity

The SPEARHEAD Max Thrust Engine Air Filter (MT-440) is a direct-fit replacement that increases dust-holding capacity and helps restore airflow for select 1993–2023 Nissan, Infiniti and Jeep applications.

If your vehicle is showing slower throttle response, reduced fuel economy, or it’s been a while since the air filter was changed, the MT-440 is engineered to be an easy, cost-effective upgrade over many stock filters. SPEARHEAD designed the Max Thrust line with a Hex-D pleat pattern and multiple progressively finer media layers to trap more contaminants while preserving unrestricted airflow up to recommended service intervals. This listing fits a range of models (QX56, Grand Cherokee, Armada, Frontier, NV series, Pathfinder, Titan, Xterra and select others) — always confirm year, make and model for exact fitment before ordering.

How does the Max Thrust filter improve engine breathing?

The filter’s Hex-D pleat geometry increases surface area so more particulate matter is captured without creating significant airflow resistance. Multiple media layers work from coarse to fine, which prolongs life and keeps air flowing even as the element loads.

• Hex-D pleat design for higher surface area and dirt-storage capacity
• Multi-layer media traps larger and finer particles in stages
• Maintains airflow to reduce strain on the intake and throttle systems

Will this filter fit my vehicle and is it easy to install?

The MT-440 is manufactured as an OEM-fit replacement for many model years and trims listed in the product details, so it installs in the original airbox with no modifications. Installation is a straightforward, do-it-yourself task that typically requires only basic hand tools and a few minutes of time.

• Direct-fit for specific QX56, Grand Cherokee, Armada, Frontier, NV, Pathfinder, Titan, Xterra and related models
• No cutting or adapters — fits standard factory airbox locations where specified
• Simple removal and replacement procedure; saves shop labor costs

How long will the SPEARHEAD Max Thrust filter last before replacement?

SPEARHEAD designs the Max Thrust filter to provide reliable service up to recommended mileage intervals under normal driving conditions, with extended dirt-holding vs. standard elements. Actual life depends on driving environment; dusty or off-road use will require earlier replacement than highway driving.

• Engineered to deliver effective filtration for typical service intervals up to about 15,000 miles
• High dust-holding capacity delays peak restriction compared to many stock filters
• Inspect more often in dusty or severe driving environments

What measurable benefits can I expect after fitting the MT-440?

After installation you should notice steadier throttle response and more consistent engine performance as airflow is restored. In many cases drivers see improved fuel efficiency and less strain on the intake system relative to an old or heavily clogged filter.

• Improved throttle feel and responsiveness compared with clogged filters
• Potential for better fuel economy through restored airflow efficiency
• Cleaner intake air reduces wear on downstream components

Who is this for: The SPEARHEAD Max Thrust MT-440 is aimed at owners of compatible Nissan, Infiniti and Jeep-family models who want an affordable, OEM-fit upgrade with enhanced dust-holding and reliable airflow. It’s a practical choice for DIY mechanics, fleet maintenance pros, and anyone looking to recover lost performance and fuel economy without modifying the vehicle’s intake system. Always verify compatibility with your vehicle’s year, make and model before purchase.