68197868AA Water in Fuel Sensor M36x1.5 for Ram 6.7L 2013-2018
This is the water-in-fuel sensor that threads into the frame-rail filter base of a 2013-2018 Ram 6.7L on an M36x1.5 thread, and the reason to fit a new one is the seal: the O-ring that keeps diesel inside the base hardens with heat, and a hardened ring weeps down the base where it is hard to spot until the frame is wet. The replacement arrives with its O-ring already on the body, so it seats and seals in one step. It covers 68197868AA, 68197868AB and 904-462.
| 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 | 68197868AA |
| Type | Water in fuel sensor with integral O-ring seal |
| Thread Size | M36 x 1.5 |
| Material | Plastic body, eight-sided |
| Seal | Rubber O-ring, supplied fitted on the body |
| Operating Temperature | up to 66 °C (150 °F) |
| Connection | Factory harness plug |
| Contents | 1 water in fuel sensor with O-ring |
| Notes | Body dimensions are not listed here; the two supply listings disagree by more than 10 mm, so match the thread and the plug to your old sensor |
| Application | Ram 2500 3500 4500 5500 with the 6.7L Cummins, 2013-2018 |
❓ FAQ
Yes. The sensor seals on an O-ring, and a ring that has hardened still looks intact from outside while it seeps. Wipe the base dry, drive, then feel the underside of the sensor boss; a fresh film there points to the ring rather than to the element housing.
No. This sensor seals on the O-ring, not on the thread. Tape or paste changes the thread friction, so the same torque no longer means the same seating depth, and the sensor tip can end up too high to read water.
Run it in by hand until the O-ring contacts, then tighten with a properly fitting wrench on the eight flats. Once the ring is compressed the sensor stops turning freely, and that is where to stop rather than continuing to force it.
It is the same physical sensor. 68197868AA, 68197868AB and 904-462 all resolve to this part; the two listings exist because buyers search either number. Fit whichever page you land on, the thread and plug are identical.
It helps more on removal than fitting. The OEM six-flat body rounds over once it has been heat-cycled for a few years; eight flats give the wrench a better purchase so the old sensor comes out in one piece.
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
The 68197868AA water-in-fuel sensor closes the bottom of the frame-rail filter base on a 2013-2018 Ram 6.7L, it seals on an O-ring rather than on the thread. That ring is what fails first: heat hardens it, it stops recovering, diesel starts tracking down the outside of the base. This replacement is a plastic sensor on an M36x1.5 thread with the O-ring supplied already fitted and an eight-sided body for wrench access. It covers 68197868AB and 904-462 and plugs into the original harness connector.
