DENSO equips new cars. Now it can equip yours.
DENSO supplies original equipment to the world's top automakers, and its aftermarket parts are built to OE grade or better, from oxygen sensors and radiators to A/C compressors, alternators, and ignition parts.
- OEgrade DENSO builds its aftermarket parts to OE grade or better
- 1sttime fit DENSO's First Time Fit promise: engineered to exact vehicle specifications so the right part fits the first time
- 3,900+parts DENSO parts on AutoNation Parts, covering makes from Acura to Volvo
Denso Air and Fuel
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Shop all DENSOSix ways into the DENSO range.
DENSO has been under the hood since 1949.
DENSO was founded in 1949 as Nippon Denso, when it became independent from Toyota Motor, and it took the DENSO name in 1996. From its headquarters in Kariya, Japan, it grew into the second largest auto parts supplier in the world in 2023, and it won the Deming Prize for quality in 1961. Its aftermarket parts are built to OE grade or better and backed by the First Time Fit promise, with coverage from Acura to Volvo across oxygen sensors, radiators, A/C compressors, alternators, ignition parts, and filters.
Original equipment roots
DENSO parts have been the choice of top automakers since 1949, and the aftermarket range is built to OE grade or better.
First Time Fit
The right part, the right fit, the first time, engineered to exact vehicle specifications for an easy install.
Recognized for quality
Awarded the Deming Prize in 1961, with parts built in QS9000 and ISO9000 certified facilities.
What people ask before they buy DENSO.
Eight answers covering fitment, sensors, warranty, and where these parts actually come from.
01Are DENSO parts OEM?
DENSO is an original equipment supplier whose parts have been the choice of top automakers since 1949, and it builds its aftermarket parts to OE grade or better. Check the product page for the details on a specific part.
02What DENSO parts can I buy here?
More than 3,900 DENSO parts, led by oxygen and air/fuel ratio sensors, radiators, A/C compressors, alternators, spark plug wire sets, and engine air filters. Add your vehicle to narrow the list to parts that fit.
03What is the difference between an oxygen sensor and an air/fuel ratio sensor?
Both read oxygen in the exhaust so the engine computer can adjust fuel delivery. A conventional oxygen sensor signals whether the mixture is rich or lean, while an air/fuel ratio sensor measures the actual ratio across a wider range. The two are not interchangeable, so replace a sensor with the type your vehicle was built with. Browse every DENSO oxygen and air/fuel ratio sensor we carry.
04Which vehicles do DENSO parts fit?
DENSO describes its coverage as running from Acura to Volvo, but fitment is set part number by part number, so your own vehicle is the only reliable test. Add it with the Search by Vehicle tool and the results above narrow to the DENSO parts that fit it.
05What is DENSO First Time Fit?
First Time Fit is DENSO's promise of the right part, the right fit, the first time. Parts are engineered to exact vehicle specifications so they install easily, perform reliably, and help avoid a second trip back under the hood.
06How do DENSO warranty claims work?
DENSO handles warranty claims through the business where the part was purchased, so a claim on a DENSO part bought here starts with us. Reach our team through the Contact Us page for the coverage on a specific part.
07How do I know a DENSO part fits my vehicle?
Add your year, make, and model with the Search by Vehicle tool, then check the fitment confirmation on the product page before the part goes in your cart.
08Is DENSO part of Toyota?
DENSO was founded in 1949 as Nippon Denso, when it became independent from Toyota Motor, and it took the DENSO name in 1996. It is a separate company headquartered in Kariya, Japan, and Toyota remains a major shareholder.