Tax calculated at checkout · USD · Free 60-day returns
Match the number printed on your old part or in the vehicle service manual — not the part name.
Replacement NOx sensor for sample checkout and bulk RFQ. Reference numbers from the listing: 12635523. Confirm OE number, connector, voltage, sensor position and vehicle/engine application before ordering. SKU: NOX-12187.
NOx Sensor 5WK9 6631A 12635523 for GM. Professional-grade nox sensor from SHR Autoparts. IATF16949 certified manufacturer, 10+ years experience, serving distributors in 50+ countries.
Please confirm compatibility by OE number, connector, voltage, sensor position and product photos before ordering. SHR Autoparts technical sales can check cross-reference details before quote.
| Product Type | NOx Sensor |
| Condition | New |
| Warranty | 12 months |
| Certification | IATF16949, ISO 9001 |
SKU: NOX-12187
Need bulk pricing? Request a Quote for volume discounts and OEM customization.
| ISO 9001SKU | NOX-12187Need bulk pricing |
|---|
| SKU | NOX-12187 |
|---|---|
| Part number | 5WK9 6631A |
| Part number | 12635523 |
| Category | GM |
Send us your VIN and we will confirm fitment within 4 business hours.
Every part ships with a 12-month warranty from the date of delivery. If the part fails under normal use within that window, we replace it or refund the purchase price — your choice.
| Destination | Carrier | Delivery | Cost |
|---|---|---|---|
| United States (cont.) | UPS / USPS | 2–4 biz days | Free $99+ · $6.90 |
| European Union | DHL / DPD | 3–6 biz days | Free $99+ · €8.90 |
| UK / Switzerland | DHL | 3–5 biz days | Free $99+ · £8.00 |
| Rest of world | DHL Express | 5–10 biz days | Calculated at checkout |
60-day no-fuss returns. Order a return label from your account, drop the part at any carrier drop-off, and we refund within 5 business days of receiving it. Wrong-fit returns are always free.
Returns policy