WHEELZEN Engine & Cabin Air Filter Set for Toyota 4Runner & FJ Cruiser 4.0L — Pleated Engine, Carbon Cabin

WHEELZEN’s two-piece air filter set replaces OEM part 17801-0P010 and the cabin filter 87139-47010 to restore clean engine intake and fresher cabin air for select Toyota 4Runner and FJ Cruiser models.

Designed as a direct-fit replacement for common Toyota part numbers—including 17801-0P010, 17801-31090, 178010P010, 1780131090 (engine) and 87139-47010, 8713947010 (cabin)—this WHEELZEN kit pairs a pleated engine air filter with an activated-carbon cabin filter. The set targets owners of 2003–2009 Toyota 4Runner V6 4.0L and 2007–2009 FJ Cruiser V6 4.0L vehicles who want an affordable, simple swap that keeps airflow healthy for the engine and reduces odors and particulates in the passenger compartment.

How does this engine air filter help my Toyota’s performance?

The engine filter is engineered to trap dust, sand, and larger airborne debris while preserving the airflow your 4.0L V6 needs. By preventing contamination of the intake, it helps maintain consistent combustion conditions and throttle response without restricting breathing.

• Direct-fit form matching OEM dimensions for easy replacement
• Pleated media increases surface area for longer service life
• Captures coarse particulates that can affect sensors and engine components
• Maintains airflow to support fuel-efficiency and engine responsiveness

What benefits does the activated-carbon cabin filter provide?

The cabin filter in this set uses activated carbon to reduce odors and help capture pollen and fine dust before they reach the cabin. It improves in-car air quality and helps HVAC systems run with cleaner intake, which enhances comfort for drivers and passengers.

• Activated-carbon layer helps absorb common road and exhaust odors
• Removes pollen, dust, and some fine particulates to improve breathability
• Fits the factory housing for a secure seal and consistent airflow
• Easy to replace during routine maintenance intervals

Is installation difficult and what tools are needed?

Both filters are made as drop-in replacements for the factory items, so installation is straightforward and intended for home mechanics or quick shop service. No special modifications are required; most replacements only require basic hand tools and a few minutes per filter.

• Engine filter: remove intake cover or clips, swap old for new, reseal housing
• Cabin filter: open glovebox or access panel, remove old filter, insert new filter with correct orientation
• Typical tools: flathead or Phillips screwdriver and possibly pliers
• Estimated time: 5–20 minutes per filter depending on access

Which vehicles and part numbers does this WHEELZEN set replace?

This two-filter kit matches multiple factory references so you can confidently replace both intake and cabin filtration on compatible Toyotas. Check your vehicle year and engine to confirm fitment before ordering.

• Engine filter replacements: 17801-0P010, 17801-31090, 178010P010, 1780131090, CA9683
• Cabin filter replacements: 87139-47010, 8713947010, CF9846A
• Fitment: 2003–2009 Toyota 4Runner V6 4.0L; 2007–2009 Toyota FJ Cruiser V6 4.0L
• Sold as a set: engine air filter plus activated-carbon cabin filter

Who is this for: WHEELZEN’s engine and cabin filter set is built for owners and technicians maintaining 2003–2009 Toyota 4Runner and 2007–2009 FJ Cruiser V6 4.0L vehicles who want an economical, OEM-compatible replacement. It suits DIY enthusiasts who prefer quick, no-fuss swaps and drivers who want improved cabin comfort and dependable engine intake protection without altering factory performance.