• Includes:
    • (1) Upstream Air / Fuel ratio sensor
    • (1) Downstream monitor sensor
  • Direct fit sensors
  • Correct Connector
    • No cutting or splicing
  • Replaces dealer part numbers: 36531PLM306, 36531 PLM 306, 36531PLMA11, 36531 PLM A11, 36531PPA305, 36531 PPA 305, 36531PPAA01, 36531 PPA A01, 36531PRBA01, 36531 PRB A01, 36531PZAL01, 36531 PZA L01, 36531P5M004, 36531P5M014, 36531 P5M 004, 36531 P5M 014
  • Built and tested to strict quality control standards

Note: For clarification purposes:

  • Upstream location is between the catalytic converter and the engine
  • Downstream location is between the catalytic converter and the tailpipe

A failed upstream sensor could lead to a failed downstream sensor. If your vehicle is running poorly or failed emiss

ions test due to faulty O2 sensors then these are the parts for you!

Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Identifying your Oxygen Sensors (0:57)
    • Upstream oxygen sensors are located in between the engine and the catalytic converter
    • Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter
    • Locate your vehicle's firing order diagram
    • The bank that contains cylinder one is bank one
    • The bank that does not contain cylinder one is bank two, even if it does not contain cylinder two

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
O2 to the rescue
It worked wonderfully. Once I installed it. The check engine light went away (after driving for a while). Inexpensive. 2 sensors for the price of 1. Fast shipping to Canada.
July 5, 2017
10 months ago
O2 sensors
Worked great little delay on delivery but customer service was big help and reshipped items and got to me in the next 2 days definitely will order again from 1 auto also not only are they helpful with car parts they make videos showing you how to replace part thanks 1 a auto ill be ordering soon
April 1, 2018
1 month ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 5 answers
Does this fit a 2005 Honda Civic lx 1.7l?
Juanito on Feb 5, 2017
BEST ANSWER: Yes, this will include a upstream and downstream sensor for your 2005 Honda Civic LX with the 1.7L engine.
Do I need special socket to change downstream?
Glenn C on Apr 14, 2017
BEST ANSWER: No its not but for the price of the socket I recommend it. Locations are very tight to use a wrench a reg socket would require you to cut the wires.

Vehicle Fit

  • 2001-2005 Honda Civic GX L4 1.7L Upstream & Downstream O2 Oxygen Sensor Pair
  • 2004-2005 Honda Civic DX LX L4 1.7L Upstream & Downstream O2 Oxygen Sensor Pair
Part #: 1AEEK00173

Ships Same Day for orders placed by 4 P.M. ET

How-to Video:

(03:08 min)