Maxfavor O2 Oxygen Sensor Set for 2002-2004 Honda CR-V 2.4L — Upstream & Downstream Direct-Fit, OE-Style Durability

If your CR-V is showing check-engine codes related to oxygen sensors or you want to restore proper air-fuel feedback, these MAXFAVOR replacements match the original equipment (OE) fitments 234-9005 and 234-4125. Manufactured to align with OE reference numbers such as 36531-PLM-A11 and 36531-PPA-305, the pair provides both the pre-catalytic (upstream) and post-catalytic (downstream) sensing required by the engine control system.

Will these sensors fit my 2002–2004 Honda CR-V?

Yes—these sensors are listed specifically for 2002, 2003 and 2004 Honda CR-V EX, LX and Base trims with the 2.4L L4 engine. Confirm fit by comparing the part numbers and connector shape to your current sensor before ordering.

• Compatible model years: 2002, 2003, 2004
• Engine: 2.4L inline-4 (L4)
• Trims: EX, LX, Base
• OE references included for verification

How do these MAXFAVOR sensors compare to the original equipment?

They are produced to match the dimensions, thread pitches and electrical connector types of the OEM components, enabling direct replacement without modifications. MAXFAVOR emphasizes durable materials and corrosion-resistant finishes to extend service life under typical driving conditions.

• Direct-fit design mirrors OE shape and threading
• Electrical connector matches factory harness
• Corrosion-resistant housing for longer durability
• Sold as an upstream and downstream set for complete replacement

What should I do during installation and initial checks?

Prepare by identifying the upstream (before catalytic converter) and downstream (after catalytic converter) sensor locations, and use the proper oxygen sensor socket for removal. Clean the threaded port, compare new and old sensors for identical connections, and tighten gently to avoid wire strain; clear any diagnostic codes after installation.

• Use an O2 sensor socket to remove the old sensor
• Compare connectors and lengths before installing
• Clean threads and hand-start to avoid cross-threading
• Reconnect harness and clear diagnostic trouble codes if present

What are the practical benefits of replacing both sensors at once?

Replacing both upstream and downstream sensors ensures consistent feedback to the engine control unit, which helps maintain stable fuel trims and proper catalytic converter monitoring. Replacing the pair reduces the chance of a remaining worn sensor triggering a new fault shortly after service.

• Restores accurate air-fuel monitoring and emissions feedback
• Helps stabilize fuel economy and drivability affected by bad sensors
• Prevents repeat visits by addressing upstream and downstream simultaneously
• Includes OE cross-references for confident part matching

Who is this for: This MAXFAVOR upstream and downstream oxygen sensor set is intended for owners and technicians working on 2002–2004 Honda CR-V models with the 2.4L L4 engine who need a direct-fit, cost-effective replacement. It suits DIY mechanics who can perform basic underbody work and professional shops seeking a reliable aftermarket option that aligns with factory specifications. Always verify part numbers and connector style against your vehicle before purchase.