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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aFe Power #31-10208 Magnum FLOW OE Replacement Air Filter

aFe Power #31-10208 Magnum FLOW OE Replacement Air Filter

Product ID: 2411601

Details

Brand
aFe Power
Fit Type
Vehicle Fit
Number of Items
1
OEM Part Number
FRAM Extra
Product Grade
Performance

🌀3-layer synthetic media for max airflow

⚙️Progressive bump seal prevents deformation

🛡️360° polyurethane frame for leak-proof fit

RM691

Duties & taxes included

In stock

Sold byAmazon MalaysiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Upgrade your airflow game—because your engine deserves the best!

LIFETIME CONFIDENCE - Backed by a limited lifetime warranty, this filter is your long-term partner in power.
MAINTENANCE MADE SIMPLE - Oil-free design means quick, hassle-free cleaning—stay road-ready with minimal downtime.
EFFORTLESS PERFORMANCE BOOST - Deep-pleated Pro DRY S media delivers superior airflow without the oily mess.
BUILT FOR THE URBAN ADVENTURER - Optimized for street and light off-road use, balancing durability with everyday performance.
PRECISION FIT ZERO COMPROMISE - 360-degree polyurethane frame ensures a factory-perfect, leak-free seal every time.

The aFe Power #31-10208 Magnum FLOW OE Replacement Air Filter features a progressive 3-layer dry synthetic media and a 360-degree polyurethane frame with a progressive bump seal, delivering superior airflow and a leak-proof fit. Designed for street and light off-road use, it offers easy, oil-free maintenance and is backed by a limited lifetime warranty, making it a reliable performance upgrade for vehicle-specific applications.

Specifications

ASIN	B004I67JZG
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#513,117 in Automotive ( See Top 100 in Automotive ) #6,305 in Automotive Replacement Air Filters
Brand	aFe Power
Brand Name	aFe Power
Customer Reviews	4.7 out of 5 stars 80 Reviews
Fit Type	Vehicle Specific Fit
Global Trade Identification Number	00802959311684
Item Type Name	Air Filter
Manufacturer	aFe Power
Manufacturer Part Number	31-10208
Manufacturer Warranty Description	Limited Lifetime
Model Number	31-10208
Number of Items	1
OEM Equivalent Part Number	FRAM Extra Guard CA10835
OEM Part Number	FRAM Extra Guard CA10835
Product Grade	Performance Part
UPC	802959311684
Unit Count	1 Count

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