Will this fit a 2014 fj cruiser with cai?

Yes. This is a "drop-in" filter replacement for the OEM filter. All FJC's from 2010 on use a CAI - stock from the factory.

Will this fit a 2018 4runner trd off road?

Yes, it fit my 2017 4runner TRD off road and it is the same engine in 2018.

What are the dimensions of the actual filter?

The one I purchased has the following measurements. The top of the filter measures 12-3/8" X 9-1/8" The bottom of the filter measures 11-3/4" X 8-7/16" The filter measurements may differ as the frame of the filter is a rubbery material.

How do you clean this filter? Wash it? Vacuum? Both?

You can Tap clean for 85% of original airflow, Vacuum clean for 96%, or Wash for a 100% clean. I would recommend the wash clean using a mild household soap, or using AEM cleaning solution for dry flow filters.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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AfE Power 31-10208 Performance Air Filter

Product ID: 49163585

Details

Brand
aFe Power
Fit type
Vehicle Fit
Number of items
1
OEM part number
FRAM Extra
Product grade
Performance

⚡Boosts acceleration & power

🧼Washable & reusable design

🛡️Durable 100% polyurethane frame

Description

⚡ Elevate your ride with power, precision, and zero compromise!

MAXIMIZED AIRFLOW - Rounded open pleats increase usable filter surface area for superior airflow and dust holding capacity.
POWER UP YOUR DRIVE - Enhance throttle response and acceleration without compromising your OEM airbox integrity.
EFFORTLESS MAINTENANCE - Oil-free, washable synthetic media means quick cleanups and multiple reuse cycles—no mess, no stress.
ENGINEERED FOR LONGEVITY - 100% pliable polyurethane frame resists heat and chemicals, ensuring a lifetime of reliable performance.
GUARANTEED PEACE OF MIND - Lifetime warranty and full emission legality keep your ride street-legal and worry-free.

The aFe Power 31-10208 Performance Air Filter is a high-efficiency, oil-free, washable air filter designed for Toyota FJ Cruiser and 4Runner V6 4.0L models (2010-2016). Featuring a durable 100% polyurethane frame and 3-layer synthetic media with progressive porosity, it maximizes airflow and dust capacity while maintaining OEM fitment. Its reusable design and lifetime warranty make it a smart upgrade for drivers seeking enhanced acceleration and long-term reliability without voiding factory warranties.

Specifications

ASIN	B004I67JZG
Automotive Fit Type	Vehicle Specific Fit
Brand Name	aFe Power
Customer Reviews	4.9 4.9 out of 5 stars (78)
Fit Type	Vehicle Specific Fit
Global Trade Identification Number	00802959311684
Included Components	Air Filter
Item Shape	Round
Item Type Name	Performance Air Filter
Manufacturer	aFe Power
Manufacturer Part Number	31-10208
Model Number	31-10208
Number of Items	1
OEM Equivalent Part Number	FRAM Extra Guard CA10835
Product Grade	Performance Part
UPC	802959311684
Unit Count	1.0 count

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