904-462 Water in Fuel Sensor 8-Sided M36x1.5 for Ram 6.7L 2013-2018
The water-in-fuel sensor on a 2013-2018 Ram 6.7L screws into the bottom of the frame-rail filter base with an M36x1.5 thread, and the OEM part uses a six-sided body. Six flats in that location means a narrow wrench purchase, and after a few heat cycles the body seizes. This replacement carries eight flats on the same M36x1.5 thread, so the wrench has more to bite on, and it drops straight into the 904-462, 68197868AA and 68197868AB position with no adapter.
| 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 | 904-462 |
| Type | Water in fuel sensor for the frame-rail filter base |
| Thread Size | M36 x 1.5 |
| Material | Engineering-grade plastic, eight-sided body |
| Seal | Oil-resistant rubber O-ring, supplied fitted |
| Operating Temperature | up to 66 °C (150 °F) |
| Connection | Original harness plug, no adapter |
| Contents | 1 water in fuel sensor with O-ring |
| Notes | Overall body dimensions are not listed here; the two supply listings disagree by more than 10 mm, so check the thread and the connector against your old sensor |
| Application | Ram 2500 3500 4500 5500 with the 6.7L Cummins, 2013-2018 |
❓ FAQ
The OEM body has six flats and sits in a tight spot on the frame rail. Six flats means a narrow wrench purchase and a body that rounds over once it has seized from heat cycles. Eight flats spread the same torque over more contact, so the sensor comes out instead of rounding.
Yes, M36x1.5, the OEM pitch. That matters because the sensor tip has to reach the same depth in the base to read water the way the original did; a different pitch would change the insertion depth.
Yes, an oil-resistant rubber O-ring is already fitted. Fit it as supplied, tighten it down, and do not add PTFE tape or sealant; those change the thread friction and can push the sensor off its sealing depth.
Drain the filter base first, fit the sensor, then cycle the key. The lamp should go out once the PCM sees a dry reading. If it stays on with a drained base, the remaining water is in the harness side or the base itself, not the sensor.
Same part, sold separately. The 68268285AC fuel water separator assembly ships with a sensor in it; this page is for when you only need to replace the sensor and keep your existing base and element.
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
On a 2013-2018 Ram 2500 through 5500 with the 6.7L Cummins, the 68197868AA water-in-fuel sensor threads into the bottom of the filter base that hangs on the frame rail. The OEM body is six-sided, which is awkward in the space available and seizes after repeated heat cycles. This replacement keeps the M36x1.5 thread and puts eight flats on the body, so the wrench contacts more of the circumference and the risk of rounding the hex on removal drops. It replaces 904-462, 68197868AA and 68197868AB and comes with an O-ring fitted.
