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DENSO 234-4478 Oxygen Sensor Heated Direct Fit - 4-Wire

(2015-2019 Subaru Outback; 2015-2019 Subaru Legacy; 2010-2012 BMW X3; 2011 BMW 528i; 2006-2010 BMW 650i Base; 2004-2005 BMW 645Ci Base + 4 more models)

Part of: DENSO Oxygen Sensor Heated Direct Fit

Other options in this family: DENSO 234-4794 DENSO 234-4380 DENSO 2344574 DENSO 234-4238 DENSO 234-8054

Manufacturer

Picture for manufacturer DENSO

Part Number

234-4478
14 reviews
Sale Price

$99.61

In Stock (5)

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Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The DENSO 234-4478 is a 4-wire heated oxygen sensor engineered to meet strict OE standards for precision performance and reliability. This direct-fit sensor is designed for exact replacement, ensuring a first-time fit without modifications.

Key Features:

  • 4-wire heated design for faster sensor activation and improved cold-start performance
  • 14.02-inch wire length for proper routing and connection
  • Exclusive aluminum oxide trap layer protects the ceramic element from silicone and lead poisoning
  • Precision-manufactured to OE specifications for accurate air-fuel ratio monitoring
  • Direct-fit application eliminates the need for adapters or modifications
  • Enhanced durability for extended service life in harsh exhaust environments

This oxygen sensor helps optimize engine performance, improve fuel efficiency, and reduce emissions by providing accurate feedback to the engine control module. DENSO's quality engineering ensures reliable operation and long-lasting performance.

Products specifications

Fits

2015-2019 Subaru Outback; 2015-2019 Subaru Legacy; 2010-2012 BMW X3; 2011 BMW 528i; 2006-2010 BMW 650i Base; 2004-2005 BMW 645Ci Base; 2009-2014 Nissan 370Z; 1994-1995 Mercedes-Benz E320 Base; 2003 Dodge Viper SRT-10; 1957-1958 Jaguar Mark VIII Base

Sensor Type

Heated

Connector Gender

Male

Universal Or Specific Fit

Specific

Wire Quantity

4

Mounting Type

Threaded

Wiring Harness Length

14.02

Thread Diameter

0.708

Drop down menus difficult to find what was needed at times.

So far I have nothing negative to report

Great service

EXCELLENT PRICING, EXCELLENT ITEM, AS DESCRIBED, GOT IT VERY FAST, DEFINATLEY WILL DO BUSINESS AGAIN

Not sure why 1 item qualified for free shipping and the other didn't. They were both in stock. One was right side and one was left side. The price dropped after I placed my order but thanks to the buySAFE I would submit for the difference.

quick, easy, and some of the best prices around.

Great!!

It was good

I'm always had a great experience!

Great shopping experience except I did not receive the discount promised by the web site because I could not find any place to enter the coupon code during check out. Otherwise I'm glad to find your site. One other small issue. I did not receive any trac

Great so far an great prices

Great Service

Shopping experience was good. It's taken quite some time to find Splash Guards for my Raptor that will actually fit properly. Hopefully these are the ones (this is my third attempt).

Great prices. They sent what I ordered and it was what I expected. I would shop with them again.

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