SPEARHEAD Engine Air Filter Replacement MT-835 — Direct-Fit for Toyota GX460/4Runner, High Dust Capacity

The SPEARHEAD Max Thrust MT-835 is a direct-fit replacement engine air filter engineered to trap more dust while maintaining strong airflow for Toyota GX460, 4Runner and FJ Cruiser applications.

If your vehicle shows reduced throttle response, diminished fuel economy, or you simply want a longer-lasting replacement than the factory paper element, this Max Thrust filter is built as an easy-to-install, high-capacity upgrade. SPEARHEAD designed the MT-835 to match original equipment dimensions while using a multi-layer Hex-D pleat media that increases contaminant-holding volume without choking airflow. It’s aimed at owners who prefer a maintenance interval up to 15,000 miles and a no-fuss swap when servicing the intake system.

How does the Max Thrust filter improve performance compared with a stock filter?

The MT-835 uses a stacked, progressively finer filter media pattern and a Hex-D pleat structure that increases surface area and dirt-holding capacity. That design keeps the airflow path clearer for longer, helping the engine breathe closer to its intended volume even as the filter loads with particles.

• Higher surface area pleats for increased air passage.
• Multiple media layers trap both large debris and finer dust.
• Maintains lower restriction under load versus standard paper filters.

Will this fit my 2010–2023 Toyota GX460, 2011–2023 4Runner, or 2011–2014 FJ Cruiser?

MT-835 is manufactured as a direct OEM-style replacement for the listed model years and engine types; always confirm fitment using the vehicle selector before purchase. The part matches factory dimensions and sealing surfaces so installation is straightforward with no aftermarket modification required.

• Direct-fit for GX460 (2010–2023) and specified 4Runner/FJ models.
• Seals to the stock housing for consistent air filtration performance.
• Simple drop-in replacement — no special tools needed.

How long can I expect this filter to last and what maintenance does it need?

• Rated for up to 15,000 miles in typical conditions.
• Inspect during scheduled maintenance or after dusty trips.
• Replace immediately if tears, major clogging, or damage are visible.

Is installation difficult and what tools are required?

Replacing the air filter is a user-friendly maintenance task that many owners complete in minutes. The filter fits into the stock airbox; most installs require only common hand tools to open the housing and reseal the cover.

• Requires basic hand tools (screwdriver or small socket set).
• Zero trimming or modification—OEM fitment maintained.
• Instructional steps are simple for DIY mechanics.

Who this is for: The SPEARHEAD Max Thrust MT-835 suits Toyota owners who want an affordable, higher-capacity OEM-fit air filter that reduces intake restriction as it loads. It’s especially useful for drivers of GX460, 4Runner and FJ Cruiser models who regularly commute, tow, or occasionally travel on dusty roads and want longer periods between replacements without sacrificing airflow or fitment precision.