Complete Fuel Bowl Seal Kit w/ Fluorosilicone Drain Orings 99-03

Part Number:
GZ-7-003

Manufacturer:

$22.98

Complete Fuel Bowl Seal Kit for Ford 7.3L (99-03) - GZ-7-003

11 Viton o-rings and 4 Parker® fuel sleeves. 2 Fluorosilicone o-rings for the 7.3 yellow fuel drain valve core to fix your 7.3L Fuel Leak.

  1. 1 o-ring for the drain valve stem
  2. 2 o-rings for the drain valve to bowl seals
  3. 2 o-rings for the Water-in-Fuel sensor/Fuel Heater
  4. 1 o-ring for the Fuel Pressure Regulator housing
  5. 1 o-ring for the regulator piston bushing
  6. 2 o-rings for the fuel back check piston assembly
  7. 2 o-rings for bowl plugs
  8. 2 - 1/4" sleeves for the fuel lines feeding the cylinder heads
  9. 1 - 5/16" sleeve for the fuel return line
  10. 1 - 3/8" sleeve for the fuel feed line.

Order of 1 is a set of 11 o-rings and 4 sleeves.

NOTE: This kit does not contain the REGULATOR POPPET SEAT. This is a separate kit only available as a FORD kit. The Regulator Rebuild kit can be purchased separately as F81Z9B249BB on our website.
NOTE: If you remove the fuel rail lines from the cylinder heads, this kit contains the fuel sleeves for the filter bowl ends only. It is recommended to also replace the sleeves on the cylinder head end of the fuel rail lines once they have been removed as they will no longer seal properly.  Order part GZ-7-004 to supplement this kit.

install.jpg

O-ring Identification Chart - Click Here

Write a Review

146 Reviews Hide Reviews Show Reviews

  • 5
    Muy Mucho More Gooder

    Posted by Sam Rock on Sep 9th 2025

    Clay and his team are the BOMB. The online instructions were on point with what we've come to expect from RiffRaff. The icing on the cake was the o-ring inventory print out included with the product that has ACTUAL size images of each o-ring printed on it to take the guess work out of which one goes where. Thanks Clay and the team for all that you do to keep our machines running strong!

  • 5
    Fuel bowl rebuild kit

    Posted by Rodney C Kuenzer on Jul 31st 2025

    The best kit I've found yet. Fast service and recivced fast. Will order more parts from this company.

  • 5
    All part worked as they should

    Posted by Michael Steinebach on Jul 24th 2025

    Parts are getting limited. So maybe buy more then one kit as back up, being as cheap as the kit is, it's a no Brainerd, however I wish I did

  • 5
    Great product

    Posted by Brandon on Jun 27th 2025

    Great price and worked as they shoukd

  • 5
    O rings

    Posted by Isaac on May 28th 2025

    Great product! Very good o rings

  • 5
    Riffraff always comes through!

    Posted by ChrisP on Apr 28th 2025

    I placed a large order of 7.3L parts and mistakenly ordered the fuel bowl reseal kit for a 6L, Clay hooked me up with the correct kit well after the normal return policy timeline! Thanks!

  • 5
    Complete fuel bowl rebuild kit

    Posted by Chris on Apr 22nd 2025

    Quality kit for rebuilding your fuel bowl

  • 5
    Quality Seals

    Posted by Josh Demello on Mar 23rd 2025

    This kit fixed my leaks and got me back on the road. Quick shipping from Riffraff as always.

  • 5
    Great product

    Posted by Lonnie on Mar 11th 2025

    Great product and support. Top quality parts and shipped quickly.