Water in Fuel Sensor 12639277 for Duramax 6.6L Silverado Sierra
Water-in-fuel sensor FSS01, plastic body with an eight-sided nut and a sealing O-ring. Cross-references 12639450, 97384931 and 97261720. Fits the fuel filter housing on 2001-2011 Chevrolet Silverado and GMC Sierra with the 6.6L Duramax diesel.
| Tier Pricing (USD / unit) | |
|---|---|
| Qty | Unit Price |
| 1+ units | $9.99 |
| 10+ units🎯 Recommended | $9.49 |
| 50+ units | $8.49 |
| 100+ units | $7.99 |
📋 Key Specs
| Part Number | 12639277, 12639450, 97384931 |
| Type | Water-in-fuel sensor for the fuel filter housing |
| Material | Plastic body |
| Connection | Push-pull electrical connector, nut mount, eight-sided |
| Seal | O-ring supplied |
| Quantity | 1 sensor |
| Contents | 1 water-in-fuel sensor and 1 O-ring |
| Application | 2001-2011 Chevrolet Silverado and GMC Sierra, 6.6L Duramax |
❓ FAQ
2001 to 2011 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD with the 6.6L Duramax diesel.
12639450, 97384931 and 97261720, the other numbers this sensor is listed under.
Yes, one O-ring is in the pack. It seals the sensor against the housing, so it is replaced at the same time.
It signals the engine control unit, which records the water-in-fuel condition and lights the dash indicator so the filter can be drained.
No. The body has an eight-sided nut, so an open-end wrench turns it out and back in.
MOQ varies by product: 5–100 units for standard parts (see product page). Tier pricing decreases with volume. Custom parts usually ≥ 50 units, evaluated by process.
Stock/short-run: 7–15 days; bulk orders 20–35 days; custom 30–45 days incl. sampling. Note your deadline in the inquiry — sales will confirm capacity.
Add products to the inquiry list and submit with contact info. Sales contact you within 24h and issue a formal quotation (tier pricing + proforma invoice) within 48h. The AI assistant can pre-fill inquiries in chat.
Yes. We develop from drawings/samples and support private labeling. Process: evaluation → sampling (15–25 days) → approval → mass production.
Payment: T/T 30% deposit + 70% before shipment / L/C / Trade Assurance. Shipping: FOB Ningbo/Shanghai, CIF or DDP; EU & NA warehouses; sea/air/express.
ISO 9001 & IATF 16949; CE/UL/ATEX on key products. Every batch ships with inspection reports; third-party inspection (SGS/BV) supported.
Description
Product Overview
Water-in-fuel sensor 12639277 reports water in the diesel to the engine control unit on the 2001 to 2011 Chevrolet Silverado and GMC Sierra with the 6.6L Duramax. The body is plastic with an eight-sided nut, and the sensor threads into the fuel filter housing where the separated water collects.
