Skip to content

Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck

Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck is a direct-fit replacement part priced at $18.07, featuring durable Viton O-rings. Ideal for 7.3L Powerstroke diesel owners experiencing fuel leaks or valve degradation.

$18.07

● In stock

Buy at Lab Work Auto →

Price and availability may change. Click to see current details on Lab Work Auto.

Key features

  • Direct fit for 1999-03 7.3L Powerstroke
  • Includes Viton O-rings for fuel resistance
  • Kit includes valve, O-rings, and Torx screws
  • Prevents diesel leaks in engine valley
  • Compatible with F250 to F550 and vans
  • Easy DIY replacement with basic tools
  • Cost-effective alternative to full housing

Pros

  • +Viton seals resist fuel and heat better
  • +Complete hardware included
  • +Solves common diesel leak issue
  • +Affordable at $18.07
  • +Direct OEM replacement
!

Cons

  • No installation instructions included
  • Only fits models built after 1/12/1998

About Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck

What is Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck?

This drain valve is a direct replacement for the factory unit on 1999–2003 Ford Super Duty trucks and vans equipped with the 7.3L Powerstroke diesel engine. Designed to seal the fuel water separator, it prevents diesel fuel leaks and ensures proper water drainage from the fuel system. Over time, the original O-rings degrade, leading to fuel odors and pooling in the engine valley—this kit addresses that failure point with upgraded Viton seals. Sold by Lab Work Auto for $18.07, it's a cost-effective fix for a common diesel maintenance issue.

Key features

  • Direct Fit — Replaces OEM valve on 1999–2003 7.3L Ford diesels built after 1/12/1998.
  • Viton O-Rings — Resists diesel fuel, heat, and swelling better than standard rubber seals.
  • Complete Kit — Includes drain valve, two Viton O-rings, and four Torx screws.
  • Easy Installation — Designed for straightforward replacement with common tools.
  • Prevents Leaks — Stops diesel fuel from leaking into engine valley when O-rings fail.
  • Cost-Effective — Affordable solution compared to full fuel filter housing replacement.
  • Wide Compatibility — Fits F250, F350, F450, F550, Excursion, E350, and E450 models.

Who is Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck for?

This part is ideal for owners of 7.3L Powerstroke diesel trucks experiencing fuel leaks near the filter housing. DIY mechanics with basic wrench skills can install it in under 30 minutes. It’s also suited for fleet managers maintaining older Super Duty vehicles where reliability and low-cost repairs are critical. Preventative replacement is recommended during routine fuel filter changes.

How does Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck compare?

Compared to generic rubber-seal kits, this version uses Viton O-rings for superior chemical and temperature resistance. It outperforms basic repair washers and eliminates the need for full housing replacements. While not including instructions, it matches OEM form and function at a fraction of dealer part cost. It’s a targeted upgrade over stock rubber seals that commonly fail due to fuel exposure.

🎯

Best use cases

  • Replace leaking drain valve on 7.3L diesel
  • Prevent fuel pooling during filter changes
  • Upgrade rubber seals to Viton
  • Fix diesel odor in engine compartment
  • Maintain older Super Duty reliability
🛒

Is Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck right for you?

This valve is best for 7.3L Powerstroke owners noticing fuel leaks or odors. Ideal for DIYers with basic mechanical skills—installation takes under 30 minutes. No special tools needed beyond a Torx bit. Consider this over full housing replacements or generic rubber kits. Always verify your vehicle build date is post-1/12/1998 for compatibility.

How it compares: Vs. standard rubber O-ring kits, this version uses Viton for longer life and fuel resistance. Cheaper than replacing the entire fuel filter housing. More reliable than makeshift fixes like RTV sealant.

More from Lab Work Auto

?

Frequently Asked Questions

What does the fuel water separator drain valve do?

It allows water and contaminants to be drained from the diesel fuel filter. A failed valve or seal can cause diesel fuel leaks into the engine valley, creating odor and fire risk.

Does this fit all 7.3L Powerstroke engines?

It fits 1999–2003 7.3L Powerstroke engines, but only in vehicles built after January 12, 1998. Always verify your build date before ordering.

How do I know if my drain valve is failing?

Signs include diesel fuel smell, visible fuel pooling in the engine valley, or drips under the truck after shutdown. The O-rings are a common failure point.

Is installation difficult?

No, it's a simple DIY job. Remove the old valve, clean the port, install the new one with the included Torx screws. Takes under 30 minutes with basic tools.

Can I use this as a preventative upgrade?

Yes, many owners replace the valve during routine fuel filter changes to prevent future leaks, especially if the original rubber O-rings are still in place.

How much does Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck cost?

Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck is $18.07 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.

Is Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck in stock at Lab Work Auto?

Yes, Fuel Water Separator Drain Valve w/Viton O-Rings for 1999-03 Ford F series Truck is currently in stock at Lab Work Auto.

Specifications

SKU
F8-025817
Last updated May 14, 2026