12638378 NOx Sensor for GM LW8378S 5WK9 6645B
Tax calculated at checkout · USD · Free 60-day returns
- 5425221652438
- 12638378
Match the number printed on your old part or in the vehicle service manual — not the part name.
What this part is
12638378 LW8378S 5WK9 6645B 5WK96645B
12638378 Nox Sensor For GM LW8378S 5WK9 6645B. Professional-grade nox sensor from SHR Autoparts. IATF16949 certified manufacturer, 10+ years experience, serving distributors in 50+ countries.
Key Features
- Aftermarket cross-reference quality, IATF16949 certified
- Direct bolt-on replacement, no modifications needed
- 100% functionally tested before shipping
- 12-month warranty with technical support
- Compatible with Euro 5/6 SCR emissions systems
OEM Part Numbers
- 5WK9 6645B
Compatibility Confirmation
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.
Specifications
| Product Type | NOx Sensor |
| Condition | New |
| Warranty | 12 months |
| Certification | IATF16949, ISO 9001 |
SKU: 5425221652438
Need bulk pricing? Request a Quote for volume discounts and OEM customization.
Technical specifications
| ISO 9001SKU | 5425221652438Need bulk pricing |
|---|
Identification
| SKU | 5425221652438 |
|---|---|
| Part number | 5WK9 6645B |
| Part number | 12638378 |
| Category | GM |
Verified fitment
Send us your VIN and we will confirm fitment within 4 business hours.
12-month parts warranty
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.
What we cover
- Manufacturing defects — no questions asked.
- Early failure within the warranty period.
- Replacement shipping both ways, on us.
What we do not cover
- Damage from incorrect installation.
- Parts modified, disassembled, or used in racing.
- Cosmetic wear or normal ageing.
Shipping rates
| 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 |
Returns
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
