Denso 143-3021 Air Filter

Denso FTF Air Filter for Toyota and Lexus

The Denso First Time Fit engine air filter is built for drivers who want a direct replacement for the factory air intake filter. With a square profile and precise dimensions of 38.0 height, 221.0 side A length, and 187.0 side B length, this filter is made to match the OE-style fit used in select Toyota and Lexus applications. Part number 143-3021 is a practical choice for maintaining clean airflow in the engine intake system.

Key Features

• Brand: Denso FTF Air Filter
• Part number: 143-3021
• Engine air filter for air and fuel delivery service
• Square shape with 38.0 height, 221.0 side A length, and 187.0 side B length
• OE-style replacement for select Lexus NX300h, CT200h, and Toyota Prius, Prius V, Prius Plug-In, and RAV4 applications
• Cross-references FRAM CA10741 and Wix 49320 for the same application

Product Details

Denso’s First Time Fit air filter line is engineered to meet the brand’s quality standards for filtration performance and consistent fitment. As a global OEM supplier in engine filtration components, Denso applies OE-focused design and manufacturing practices to this replacement filter. The 143-3021 air filter is sized for specific Toyota and Lexus platforms, including 2010-2015 Toyota Prius, 2012-2017 Toyota Prius V, 2012-2015 Toyota Prius Plug-In, 2016-2018 Toyota RAV4, 2011-2017 Lexus CT200h, 2015-2018 Lexus NX300h, and 2019-2021 Lexus NX300h.

For shoppers searching for a Toyota Prius engine air filter, Lexus NX300h air filter, or Denso 143-3021 replacement, this part provides a direct-fit option for the listed vehicles. It is also a strong match for buyers comparing OE replacement air filters for Toyota and Lexus hybrid applications.

What It Helps Address

• Restricted engine airflow from a dirty or clogged air filter
• Routine maintenance replacement for factory-style intake filtration
• Fitment issues caused by using the wrong filter dimensions
• Reduced intake efficiency from worn filtration media
• Need for a direct replacement on select Toyota and Lexus hybrid models

Installation Notes and Tips

Verify the vehicle year, make, and model against the listed fitment before ordering. Confirm the filter housing dimensions match the square 38.0 x 221.0 x 187.0 specification. Replace the engine air filter during scheduled maintenance and inspect the air box for debris before installing the new filter.

Quality Assurance

Denso positions the First Time Fit line as an OE-focused replacement range built to its quality standards. The 143-3021 is backed by Denso’s filtration engineering approach and quality assurance process for the listed applications.