HomeEmission Control > SensorsDenso 234-4395 Oxygen Sensor - Downstream
Part #: 234-4395

Denso 234-4395 Oxygen Sensor - Downstream

OE Style, Downstream
2 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$94.32Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
OE Style, Downstream
Fitment: Mazda, 6
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Denso OE Style Oxygen Sensor 234-4395

The Denso OE Style Oxygen Sensor 234-4395 is designed specifically for Mazda 6 models, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a 25.63-inch wiring harness, ensuring a secure and accurate fit.

  • Heated oxygen sensor for faster response times
  • Specific fit for Mazda 6 vehicles
  • Threaded mounting type with 0.708-inch thread diameter
  • 25.63-inch wiring harness length for optimal installation
  • Four-wire configuration with male connector

Detailed Product Description

The Denso 234-4395 oxygen sensor is engineered to meet the exact specifications of Mazda 6 models, ensuring compatibility and reliable operation. Its heated sensor type allows for quicker activation and improved fuel efficiency by accurately measuring oxygen levels in the exhaust gases. The sensor’s four-wire design includes a male connector, facilitating straightforward electrical connections. With a 0.708-inch thread diameter and threaded mounting type, installation is secure and consistent with OEM standards. The 25.63-inch wiring harness length provides sufficient reach for proper placement within the vehicle’s emission system.

About the Denso OE Style Product Line

The OE Style product line from Denso focuses on delivering parts that closely replicate original equipment specifications. This ensures that the oxygen sensor 234-4395 maintains the performance and durability expected from factory-installed components. The OE Style line is tailored for specific vehicle applications, such as the Mazda 6, to provide a precise fit and reliable emission control.

Common Applications and Issues Addressed

  • Restores accurate oxygen level readings for optimal engine management
  • Helps resolve rough idling and poor fuel economy
  • Reduces emissions by ensuring proper air-fuel mixture
  • Prevents check engine light related to oxygen sensor faults
  • Improves overall engine performance and responsiveness

Installation Notes and Tips

When installing the Denso 234-4395 oxygen sensor on a Mazda 6, ensure the threaded mounting is tightened to manufacturer torque specifications to avoid leaks. The 25.63-inch wiring harness length allows for flexible routing; verify the male connector is securely attached to the vehicle’s wiring harness. It is recommended to use anti-seize compound on the threads to facilitate future removal. Always disconnect the battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

Denso oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The OE Style 234-4395 sensor is manufactured to provide consistent operation under various driving conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandDenso
Part Number234-4395
PositionOE Style, Downstream
Connector GenderMale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length25.63

This part fits 2 vehicles. Search below:

YearMakeModelPositionNotes
2007Mazda6DownstreamOE Style
2006Mazda6DownstreamOE Style

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

213-3892

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.