Fuel Water Separator FS36401 106 x 194 mm for Paccar MX13 ISX
Fuel water separator element FS36401, 105.7 mm (4.16 in) outside diameter, 193.6 mm (7.62 in) overall height, 10 micron. Cross-references K371004, PF9928, P557004, WF10249 and L5094F. Fits the Paccar chassis-mounted fuel filter housing on Kenworth and Peterbilt trucks with MX, MX-11, MX-13 and Cummins ISX engines.
| Tier Pricing (USD / unit) | |
|---|---|
| Qty | Unit Price |
| 1+ units | $11.99 |
| 10+ units🎯 Recommended | $11.39 |
| 50+ units | $10.19 |
| 100+ units | $9.59 |
📋 Key Specs
| Part Number | FS36401, K371004, PF9928, P557004, WF10249, L5094F |
| Filter Type | Fuel water separator element, cartridge |
| Outer Diameter | 105.7 mm (4.16 in) |
| Overall Height | 193.6 mm (7.62 in) |
| Micron Rating | 10 micron |
| Media | Multi-layer coalescing media |
| Efficiency | 97.6% particulate capture, 50.28% emulsified water separation |
| Seal | Lid gasket supplied with the element |
| Contents | 1 fuel water separator element |
| Application | Paccar fuel filter housing; Kenworth and Peterbilt; MX, MX-11, MX-13, Cummins ISX |
❓ FAQ
Yes, where the truck carries the Paccar chassis-mounted fuel filter housing. The element is 105.7 mm across and 193.6 mm tall, and it drops into that housing without an adapter.
Yes. The hyphen is only a formatting difference; both numbers point at the same Paccar element, which this cartridge replaces.
The published figure is 50.28% emulsified water separation alongside 97.6% particulate capture. Free water that reaches the bowl still has to be drained, so check the bowl at every service.
Yes, the gasket ships with the element. That matters because a flattened or cut ring is the usual cause of a weep after a filter change.
No. This element is for the Paccar housing. Trucks with a Cummins-branded filter head take a different element, so check which housing is on the frame rail before ordering.
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
FS36401 is a fuel water separator cartridge 105.7 mm (4.16 in) across and 193.6 mm (7.62 in) tall, rated 10 micron, made for the Paccar chassis-mounted fuel filter housing. It replaces the Paccar original K371004 and serves Kenworth and Peterbilt trucks running MX, MX-11, MX-13 or Cummins ISX engines.
