1AEEK00521-O2 Oxygen Sensor with Install Tool

Replaces

2015 Cadillac CTS V Upstream O2 Oxygen Sensor with Install Tool

1AEEK00521-1261458-2015
Guaranteed to fit: 2015 Cadillac CTS

Fit Details

  • Trim: V
  • Oxygen Sensor Location: Upstream

Part Details

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Part 1AEEK00521
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DIY Solutions
Brand #: EMS00146

Frequently bought together

Description
Vehicle Fit
Warranty & Shipping
How-To & Tools
Q&A

Our electrical and electronic parts are subject to strict quality testing.

Parts cannot be returned after they have been installed. Contact us with any questions before installing the parts.

Direct Fit Replacement

Direct fit replacement part guaranteed to fit and function properly for your specific application

Quality Tested

Quality tested and built to a strict level of product standards

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

  1. step : Removing the Oxygen (O2) Sensor (0:51)
    • Raise and secure the vehicle
    • Remove the O2 sensor with an O2 sensor socket and a ratchet
    • Remove the rest of the sensor by hand
    • Disconnect the oxygen sensor wiring harness
    • Disconnect the clip to remove the sensor wire
  2. step : Installing the New O2 Sensor (3:05)
    • Twist the new O2 sensor into place
    • Tighten the O2 sensor with an O2 sensor socket and a ratchet
    • Connect the clip to the sensor wire
    • Connect the O2 sensor wiring harness
    • Lower the vehicle to the ground

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • A Piece of Pipe (for leverage)

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Specialty Tools

  • O2 Sensor Socket

Need help? Ask one of our Auto Experts
Need help? Ask one of our Auto Experts
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Looking for a 02 oxygen sensor 2013 1500 Silverado. Found it on your site but when I scroll down it says fits buick not Silverado?
Paul H September 26, 2017
Simply click "view more" and the vehicle fit list will expand to show it fits a 2013 Chevy Silverado!
Tim K September 27, 2017
What brand are these?
Zalo H December 13, 2018
1A Autos house brand parts are manufactured by various aftermarket companies specifically for us and built to your vehicles exact OEM specifications.
Jessica D December 13, 2018

Fits the following Makes:

Year Make Model Description
2008Buick Enclave Buick Enclave Upstream O2 Oxygen Sensor with Install Tool
2005-2009Buick LaCrosse Buick LaCrosse V6 3.8L California Emissions Upstream O2 Oxygen Sensor with Install Tool
2007-2008Buick Lucerne Buick Lucerne V6 3.8L Partial Zero Emissions Vehicle (PZEV) Upstream O2 Oxygen Sensor with Install Tool
2009-2011Buick Lucerne Buick Lucerne V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2005Buick Rainier Buick Rainier V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Buick Rendezvous Buick Rendezvous V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2005-2006Buick Terraza Buick Terraza V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Buick Terraza Buick Terraza V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2004-2005Cadillac CTS Cadillac CTS V Upstream O2 Oxygen Sensor with Install Tool
2009-2015Cadillac CTS Cadillac CTS V Upstream O2 Oxygen Sensor with Install Tool
2005Cadillac Deville Cadillac Deville Upstream O2 Oxygen Sensor with Install Tool
2003-2005Cadillac Escalade Cadillac Escalade V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Cadillac Escalade Cadillac Escalade V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2014Cadillac Escalade Cadillac Escalade V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Cadillac Escalade ESV Cadillac Escalade ESV V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Cadillac Escalade ESV Cadillac Escalade ESV V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2014Cadillac Escalade ESV Cadillac Escalade ESV V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Cadillac Escalade EXT Cadillac Escalade EXT V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Cadillac Escalade EXT Cadillac Escalade EXT V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2013Cadillac Escalade EXT Cadillac Escalade EXT V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2004Cadillac Seville Cadillac Seville Upstream O2 Oxygen Sensor with Install Tool
2008-2013Chevrolet Avalanche Chevrolet Avalanche V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2008-2009Chevrolet Avalanche Chevrolet Avalanche V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Avalanche 1500 Chevrolet Avalanche 1500 V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Avalanche 1500 Chevrolet Avalanche 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2011-2013Chevrolet Caprice Chevrolet Caprice V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2005-2010Chevrolet Cobalt Chevrolet Cobalt L4 2.2L Upstream O2 Oxygen Sensor with Install Tool
2006-2008Chevrolet Cobalt Chevrolet Cobalt L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2004Chevrolet Corvette Chevrolet Corvette Z06 Upstream O2 Oxygen Sensor with Install Tool
2004Chevrolet Corvette Chevrolet Corvette Upstream O2 Oxygen Sensor with Install Tool
2005-2009Chevrolet Equinox Chevrolet Equinox V6 3.4L Upstream O2 Oxygen Sensor with Install Tool
2006-2011Chevrolet HHR Chevrolet HHR L4 2.2L Upstream O2 Oxygen Sensor with Install Tool
2009-2011Chevrolet HHR Chevrolet HHR L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2006-2011Chevrolet Impala Chevrolet Impala V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2007-2011Chevrolet Impala Chevrolet Impala V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2004-2010Chevrolet Malibu Chevrolet Malibu V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Chevrolet Malibu Chevrolet Malibu V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2008-2012Chevrolet Malibu Chevrolet Malibu V6 3.6L Upstream O2 Oxygen Sensor with Install Tool
2006Chevrolet Monte Carlo Chevrolet Monte Carlo V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Chevrolet Monte Carlo Chevrolet Monte Carlo V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2005Chevrolet SSR Chevrolet SSR Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 1500 Chevrolet Silverado 1500 New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 1500 Chevrolet Silverado 1500 New Body Style V8 5.3L Flex Fuel Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 1500 Chevrolet Silverado 1500 New Body Style V8 4.8L Upstream O2 Oxygen Sensor with Install Tool
2008-2013Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 4.8L Upstream O2 Oxygen Sensor with Install Tool
2008-2013Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2013Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2009-2013Chevrolet Silverado 1500 Chevrolet Silverado 1500 V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD Extended Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD New Body Style Regular Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD Crew Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD Extended Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD Regular Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Chevrolet Silverado 2500 HD Chevrolet Silverado 2500 HD Crew Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 3500 HD Chevrolet Silverado 3500 HD Extended Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 3500 HD Chevrolet Silverado 3500 HD New Body Style Regular Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007Chevrolet Silverado 3500 HD Chevrolet Silverado 3500 HD Crew Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Chevrolet Silverado 3500 HD Chevrolet Silverado 3500 HD Extended Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Chevrolet Silverado 3500 HD Chevrolet Silverado 3500 HD Regular Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Chevrolet Silverado 3500 HD Chevrolet Silverado 3500 HD Crew Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2013-2015Chevrolet Spark Chevrolet Spark Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Suburban 1500 Chevrolet Suburban 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Suburban 1500 Chevrolet Suburban 1500 V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2014Chevrolet Suburban 1500 Chevrolet Suburban 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2008-2009Chevrolet Suburban 1500 Chevrolet Suburban 1500 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2013Chevrolet Suburban 2500 Chevrolet Suburban 2500 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Tahoe Chevrolet Tahoe V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005Chevrolet Tahoe Chevrolet Tahoe V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2014Chevrolet Tahoe Chevrolet Tahoe V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2008-2013Chevrolet Tahoe Chevrolet Tahoe V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2009Chevrolet Tahoe Chevrolet Tahoe V8 4.8L Upstream O2 Oxygen Sensor with Install Tool
2009Chevrolet Tahoe Chevrolet Tahoe V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2005Chevrolet Trailblazer Chevrolet Trailblazer V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2005Chevrolet Trailblazer EXT Chevrolet Trailblazer EXT V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2005-2006Chevrolet Uplander Chevrolet Uplander V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2006-2008Chevrolet Uplander Chevrolet Uplander V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2007-2008GMC Acadia GMC Acadia Upstream O2 Oxygen Sensor with Install Tool
2005GMC Envoy GMC Envoy V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2005GMC Envoy XL GMC Envoy XL V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2005GMC Envoy XUV GMC Envoy XUV V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005GMC Sierra 1500 GMC Sierra 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005GMC Sierra 1500 GMC Sierra 1500 V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 1500 GMC Sierra 1500 New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 1500 GMC Sierra 1500 New Body Style V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 1500 GMC Sierra 1500 New Body Style V8 4.8L Upstream O2 Oxygen Sensor with Install Tool
2008-2014GMC Sierra 1500 GMC Sierra 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Sierra 1500 GMC Sierra 1500 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Sierra 1500 GMC Sierra 1500 V8 4.8L Upstream O2 Oxygen Sensor with Install Tool
2009-2013GMC Sierra 1500 GMC Sierra 1500 V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Hybrid V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 2500 HD GMC Sierra 2500 HD Extended Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 2500 HD GMC Sierra 2500 HD Crew Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010GMC Sierra 2500 HD GMC Sierra 2500 HD Extended Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010GMC Sierra 2500 HD GMC Sierra 2500 HD Crew Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 3500 HD GMC Sierra 3500 HD Extended Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2007GMC Sierra 3500 HD GMC Sierra 3500 HD Crew Cab New Body Style V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010GMC Sierra 3500 HD GMC Sierra 3500 HD Extended Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2010GMC Sierra 3500 HD GMC Sierra 3500 HD Crew Cab V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2003-2005GMC Yukon GMC Yukon V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005GMC Yukon GMC Yukon V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Yukon GMC Yukon V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Yukon GMC Yukon V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Yukon GMC Yukon V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2008-2009GMC Yukon GMC Yukon V8 4.8L Upstream O2 Oxygen Sensor with Install Tool
2003-2005GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2003-2005GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2008-2009GMC Yukon XL 1500 GMC Yukon XL 1500 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Yukon XL 1500 GMC Yukon XL 1500 V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2008-2013GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2005Isuzu Ascender Isuzu Ascender V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2005Isuzu Ascender Isuzu Ascender V8 5.3L Downstream O2 Oxygen Sensor with Install Tool
2004-2005Pontiac Bonneville Pontiac Bonneville V8 4.6L Upstream O2 Oxygen Sensor with Install Tool
2007-2009Pontiac G5 Pontiac G5 L4 2.2L Upstream O2 Oxygen Sensor with Install Tool
2007Pontiac G5 Pontiac G5 L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2006-2010Pontiac G6 Pontiac G6 V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2006-2009Pontiac G6 Pontiac G6 V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Pontiac G6 Pontiac G6 L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2008-2009Pontiac G6 Pontiac G6 V6 3.6L Upstream O2 Oxygen Sensor with Install Tool
2008-2009Pontiac G8 Pontiac G8 V8 6.0L Upstream O2 Oxygen Sensor with Install Tool
2009Pontiac G8 Pontiac G8 V8 6.2L Upstream O2 Oxygen Sensor with Install Tool
2004Pontiac GTO Pontiac GTO Upstream O2 Oxygen Sensor with Install Tool
2005-2006Pontiac GTO Pontiac GTO Upstream O2 Oxygen Sensor with Install Tool
2005Pontiac Grand Prix Pontiac Grand Prix V8 5.3L California Emissions Upstream O2 Oxygen Sensor with Install Tool
2005-2006Pontiac Grand Prix Pontiac Grand Prix V6 3.8L California Emissions Upstream O2 Oxygen Sensor with Install Tool
2007-2008Pontiac Grand Prix Pontiac Grand Prix V6 3.8L Partial Zero Emissions Vehicle (PZEV) Upstream O2 Oxygen Sensor with Install Tool
2005Pontiac Montana Pontiac Montana V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2006Pontiac Montana SV6 Pontiac Montana SV6 Upstream O2 Oxygen Sensor with Install Tool
2006-2007Pontiac Solstice Pontiac Solstice L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Pontiac Torrent Pontiac Torrent V6 3.4L Upstream O2 Oxygen Sensor with Install Tool
2005Saab 9-7X Saab 9-7X V8 5.3L Upstream O2 Oxygen Sensor with Install Tool
2007-2009Saturn Aura Saturn Aura V6 3.6L Upstream O2 Oxygen Sensor with Install Tool
2007-2008Saturn Aura Saturn Aura V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2005-2007Saturn Ion Saturn Ion L4 2.2L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Saturn Ion Saturn Ion L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2007-2008Saturn Outlook Saturn Outlook Upstream O2 Oxygen Sensor with Install Tool
2005-2006Saturn Relay Saturn Relay V6 3.5L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Saturn Relay Saturn Relay V6 3.9L Upstream O2 Oxygen Sensor with Install Tool
2007Saturn Sky Saturn Sky L4 2.4L Upstream O2 Oxygen Sensor with Install Tool
2006-2007Saturn Vue Saturn Vue L4 2.2L Upstream O2 Oxygen Sensor with Install Tool
2008-2010Saturn Vue Saturn Vue V6 3.6L Upstream O2 Oxygen Sensor with Install Tool
2008-2009Saturn Vue Saturn Vue V6 3.5L Upstream O2 Oxygen Sensor with Install Tool

Part Interchange

Brand Label Part Number
DIY Solutions EMS00146
DIY Solutions EMS00438
DIY Solutions TLS00001

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

FREE SAME DAY SHIPPING
DIY Solutions
Brand #: EMS00146
Product Reviews
4.46/ 5.0
13 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
7
5
1
0
0
sensor and toll
All arrived ahead of schedule, the sensor was packed in with brakes and rotors and arrived broken. took a few extra days to get a replacement. The sensor tool was useless for the removal. Due o the opening the socket kept spreading so for the removal it was no good.
March 14, 2017
Great part
Great part and tool. Installation was a breeze. Shipping was slower than I expected.
August 11, 2017
Great price! Part fit as oem, fast shipping. I order aftermarket parts from ,,1 aauto a good bit and have always been satisfied with their parts.
October 3, 2017
Excellent deal
The tool worked perfectly, as did the O2 sensor, all at a very reasonable price. I highly recommend 1aauto to all my DIY friends.
November 20, 2017
Great
Very good product great fit and quick shipping! Will definitely order parts from 1a auto again!
May 28, 2018
O2 sensor
First purchase for auto parts on line and the O2 sensor works awsome. Engine light is off and stayed off. My mileage has gone from 21 average to 28 on my 2006 Chevy Cobalt.
June 2, 2018
Works good
O2 sensor was exact fit, and all the engine codes cleared
July 12, 2018
Did the job
I was not able to use the tool for removal, it kept slipping off but I got it off with a pipe wrench and used the tool to install the new one and it worked just fine. My engine light does not come on any more and my truck runs great now.
November 26, 2018
Good Product, Would Order Again
I installed this on a 2004 Silverado 1500 5.3L, upstream. The product fit perfect and functions as it should. I no longer have a check engine light illuminated on my dash. The only reason I would not review this product as 5-star is because the included socked was a bit flimsy. My sensor was stuck pretty good, and this socket would flex when I applied force, and rotate around the points on the sensor. I ended up buying a different style O2 socket to complete the job. I would still buy this product again, and now I have this handy socket for "less stuck" O2 sensors.
March 16, 2019
No problem
Easy in and out with tool part was correct check engine light is off truck runs great
May 10, 2019
Fast delivery
Got package fast
June 18, 2019
good,same as one from factory
matched up right away from computer, great replacement part
August 28, 2019
Just right
The tool help take the old sensor off and the easy to re-install
August 3, 2020
Customer service

877-844-3393

Monday - Friday 8:00am - 9:30pm ET
Saturday - Sunday 8:00am - 4:30pm ET

Cadillac is a registered trademark of General Motors Company. 1A Auto is not affiliated with or sponsored by Cadillac or General Motors Company. See all trademarks.

O2 Oxygen Sensor with Install Tool-1AEEK00521 does not fit your:


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select your Vehicle, to verify this Part will fit.

This part will only fit a 2015 Cadillac CTS with these options.