APNUWAER NOx Sensor For Citroen 1.6/2.0 HDi Diesel 2012-21 SNS735C 9821121180 For Sale - New and Used

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• Nox Sensor
• PM Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

• Nox Sensor
• PM Sensor

• PM Sensor
• Nox Sensor

Item Type: NOx Sensor

Condition: Brand New

OE Part Number: 9821121180
Ref No: SNS735C

APNUWAER Number: 9821121180 SNS735C

Warranty: One Year Warranty

Feature: High quality, Direct replacement, Can be installed directly

Packaging Method: Box Packed

Package Includes: 1 Piece

Product Description

Used for NOx detection in diesel vehicle exhaust. Misdiagnosis may occur due to

exhaust interference, aftertreatment faults, loose wiring, temperature conditions,

calibration compatibility and cross-sensitivity.

We focus on premium material selection and strict production quality control. Every component is precisely matched to ensure stable signal transmission, high detection accuracy and excellent compatibility with original vehicles.

Effectively resist high temperature, corrosion and harsh exhaust environment, greatly extending the service life. Our NOx sensors feature outstanding durability, reliable long-term performance and lower failure rates, providing you with long-lasting and cost-effective replacement solutions.

Fit Car Moder:

Common Misdiagnosis Causes:

Exhaust cross-interference causes abnormal readings and drift

Aftertreatment system failures show as false sensor faults

Loose wiring and connectors lead to intermittent faults

Insufficient working temperature results in warm-up timeout error

Gradual sensor aging, not sudden damage

Wrong model, lost calibration or software incompatibility

Maintenance Diagnosis Tips：
High downstream NOx: Check urea, catalyst and ammonia slip first

Low reading & DPF clog: Probe covered by carbon, poor airflow

Fault when hot, normal when cold: Loose wiring or corroded connector

New sensor still errors: Wrong model, lost calibration or system fault

Warm-up error in, short trips: Insufficient temperature, not sensor damage

WARRANTY: APNUWAER offers a 1-year unlimited mileage warranty. It is warranted to be free from defects in workmanship and materials under normal use for the entire warranty period from the date of purchase.

• ABOUT US

• Orders will generally be shipped within 2-3 business days after placement via \'s official logistics service - SpeedPAK.
• All shipments are dispatched from China. For standard logistics to the United States, the United Kingdom and EU countries, the delivery time is typically 10-15 working days. For other countries, delivery may take 15+ working days.
• Delays may occur due to public holidays or extreme weather conditions. Your understanding is highly appreciated.
• Expedited logistics services are available upon request. Please contact us for more details.
• If the product price includes shipping fees, the shipping fees will not be refunded in the event of a return.

We accept all payment methods supported by , including PayPal and credit cards.

• If you are not satisfied with your order, please contact us first for help.We support return, exchange and replacement parts service.All returned items must be unused, unmodified with original packaging and receipt.Buyer is responsible for return shipping fees.A valid Return Authorization Number is required for all returns/exchanges.Returns without authorization will not be accepted.

Please do not initiate returns for any reason without prior communication. We typically respond to messages within 24 hours, and feel free to contact us if you have any questions or concerns.

On May 8, 2026 at 01:52:38 PDT, seller added the following information: