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Automotive  Filters

Premium KOJI Filters engineered to protect your engine against harmful elements.


YOUR ENGINE'S BEST LINE OF DEFENSE.

No matter what road conditions, KOJI family of filters offers the best price per performance ratio in the market. With our production expertise and high-quality filter materials, you can be assured you are using the best filter to prolong your engine's life.
AIR FILTER OIL FILTER FUEL FILTER CABIN AIR FILTER

Our Story

The tradition of making high quality filters goes way back to 1976 when it all started.  KOJI Filters are designed and built with quality in mind.  The technology involved in manufacturing filters are so vast that it requires mastery of many production processes to form a filter that can truely function and protect the engine.  This is what KOJI Filter has perfected in order to provide the most advance filtration product in the market.

KOJI Filter is the culmination of our dedication, life-long experiences, expertise, and integrity.

Filtration performance like no other.

What makes KOJI Filter unique is its ability to perform exceptionally well from the day it is installed until it is time to be replaced.  Other filters sacrifice product quality to reduce cost, dramatically reducing the performance of the filter.  This means shorter filter life cycle, or total filtration failure.  With KOJI Filter, you have a peace of mind that your filter is working for you round the clock.

私たちは、社内のラボテストマシンを使用して製品を開発しています。すべてのフィルターが最高品質で製造されていることを確認します。

AIR FILTER
  エアフィルタ


KOJI Air Filters are made up of high-efficiency filtering media that removes more dust particles in the air entering the engine.  Our specially formulated rubber gaskets are heat resistant preserving its sealing capability even if it is subjected to extreme temperatures.
CABIN FILTER
  エアコンフィルタ


KOJI Cabin Air Filters are specially designed to remove dust, pollen, and other air contaminants from entering your car's passenger cabin area. Our products are proven to improve your vehicles' indoor air quality so you and other passengers can breath comfortably during your travel.

Learn more about KOJI Cabin Filters
OIL FILTER
  オイルフィルタ


KOJI Oil Filters' exceptional performance traps metal particles from circulating with the engine oil.  Each KOJI Oil Filter are tested against 8 durability test during product development.  This ensures all KOJI Oil Filters are built with the highest standard.
FUEL FILTER
  フューエルフィルタ


KOJI Fuel Filters can remove rust, dirt and metal contaminants found inside the fuel tank from flowing and ultimately damaging your vehicle's fuel injection system.  KOJI Fuel Filters have high dust holding capacity and maintains excellent fuel flow for a smooth drive.