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![O2 Oxygen 02 Sensor for 2013-2015 Cadillac ATS 3.6L Upstream + Downstream 4pcs KOEEP [1]](http://koeep.com/cdn/shop/files/O2_Oxygen_02_Sensor_for_2013_2015_Cadillac_ATS_3_6L_Upstream___Downstream_4pcs_KOEEP__1.webp?v=1776545416)
![O2 Oxygen 02 Sensor for 2013-2015 Cadillac ATS 3.6L Upstream + Downstream 4pcs KOEEP [1]](http://koeep.com/cdn/shop/files/O2_Oxygen_02_Sensor_for_2013_2015_Cadillac_ATS_3_6L_Upstream___Downstream_4pcs_KOEEP__1_medium.webp?v=1776545416)
![O2 Oxygen 02 Sensor for 2013-2015 Cadillac ATS 3.6L Upstream + Downstream 4pcs KOEEP [2]](http://koeep.com/cdn/shop/files/O2_Oxygen_02_Sensor_for_2013_2015_Cadillac_ATS_3_6L_Upstream___Downstream_4pcs_KOEEP__2_medium.webp?v=1776545421)
![O2 Oxygen 02 Sensor for 2013-2015 Cadillac ATS 3.6L Upstream + Downstream 4pcs KOEEP [3]](http://koeep.com/cdn/shop/files/O2_Oxygen_02_Sensor_for_2013_2015_Cadillac_ATS_3_6L_Upstream___Downstream_4pcs_KOEEP__3_medium.webp?v=1776545427)
![O2 Oxygen 02 Sensor for 2013-2015 Cadillac ATS 3.6L Upstream + Downstream 4pcs KOEEP [4]](http://koeep.com/cdn/shop/files/O2_Oxygen_02_Sensor_for_2013_2015_Cadillac_ATS_3_6L_Upstream___Downstream_4pcs_KOEEP__4_medium.webp?v=1776545432)
| Condition | new |
| MPN | E83621CP235S |
| Country of Origin | China |
| Manufacturer Warranty | 1 Year |
| Pin Quantity | 4 |
| Thread Size | M18 |
| Fitment Type | Direct Replacement |
| Wire Quantity | 4 |
| Attachment Method | Screw-On |
| Output Signal Range | 0.2V To 0.8V |
| UPC | Does not apply |
| Modified Item | No |
| Position | Upstream, Downstream |
| Features | Direct Fit |
| Sensor Type | Heated |
| Custom Bundle | Yes |
| Mounting Type | Threaded |
| Terminal Type | Blade |
| Number of Pieces | 4 |
| Universal Or Specific Fit | Specific |
| Type | Sensor |
Free standard shipping on orders over $99
Estimated to be delivered on 12/01/2022 - 15/10/2022.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
The O2 Oxygen Sensor Set (4 pcs, Upstream + Downstream) is a complete replacement kit for the 2013-2015 Cadillac ATS 3.6L V6. The kit covers all four bank positions: pre-cat (upstream) and post-cat (downstream) sensors for both the left and right cylinder banks on the LF4 / LFX 3.6 L V6. Each sensor feeds exhaust oxygen data back to the ECM to maintain closed-loop fueling and monitor catalyst efficiency.
Replacing all four sensors at once clears persistent O2-related DTCs (P0130 / P0150 / P0136 / P0156 family), restores fuel economy, and brings a tired ATS back to factory-cruise smoothness. Add to Quote at KOEEP and we will confirm fitment for your specific 3.6 L variant and ship globally.
| Make | Model | Year | Trim/Notes |
|---|---|---|---|
| Cadillac | ATS | 2013-2015 | 3.6 L V6 — Luxury / Performance / Premium |
| Cadillac | ATS Coupe | 2015 | 3.6 L V6 |
| Reference P/N | E83621CP235S (set) |
| Sensor Type | Heated oxygen sensor (HO2S), 4-wire |
| Quantity | 4 pieces (2 upstream + 2 downstream) |
| Engine | 3.6 L V6 (LF4 / LFX) |
| Condition | Brand New Aftermarket |
| Warranty | 1 Year |
Click Add to Quote above or email us at support@koeep.com with the part number E83621CP235S and your Cadillac ATS model year. We'll get back with availability and pricing within 24 hours.
Click Add to Quote or email support@koeep.com with the SKU and your Cadillac ATS year.
Request a Quote →You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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