Denso 234-4141 Oxygen Sensor - Downstream, Downstream Rear or Downstream Right

Denso OE Style Oxygen Sensor 234-4141

This Denso OE Style oxygen sensor is built as a direct replacement for specific Mazda MPV applications. It is a heated, threaded sensor with a 4-wire male connector and a 24.41-inch wiring harness for a precise OE-style service fit.

Key Features

• Heated oxygen sensor for accurate exhaust feedback
• Specific-fit design for direct replacement on listed Mazda MPV applications
• 24.41-inch wiring harness length
• 4-wire configuration with male connector
• Threaded mounting with 0.708-inch thread diameter
• OE Style construction for first-time fitment

OE Style Design and Construction

Denso’s OE Style line is built to match original equipment dimensions and connection points for straightforward replacement. The sensor uses a precision-built design for exact fitment, and the internal aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination. That protection supports stable engine operation, consistent fuel control, and long service life. The Denso 234-4141 is a direct-fit oxygen sensor for Mazda MPV downstream locations.

This part cross-references Bosch (e.g., 13596, 15315) for the same application.

Vehicle Fitment

• Fits 2002-2006 Mazda MPV, Downstream Rear
• Fits 2000-2001 Mazda MPV, Downstream Right
• Fits 1996-1998 Mazda MPV, Downstream

Common Replacement Reasons

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent air-fuel readings
• Reduced fuel economy from inaccurate exhaust feedback
• Slow sensor response during closed-loop operation
• Failed emissions inspection tied to downstream sensor faults

Installation Notes and Tips

Confirm the sensor position before ordering, since this application covers downstream rear, downstream right, and downstream locations on different Mazda MPV model years. Match the connector style, wire count, and threaded mounting dimensions to the original sensor before installation. For best results, inspect the harness routing and exhaust threads during replacement.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement performance and consistent fit. The OE Style design is intended to deliver the right part for the listed Mazda MPV applications, including 2002-2006 Mazda MPV downstream rear and 2000-2001 Mazda MPV downstream right service positions. Part number 234-4141 is engineered for accurate replacement and dependable operation.