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Riffraff Diesel Performance Inc, Engines - Supplies, Equipment & Parts, Eagle Point, OR


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Complete Fuel Bowl Seal Kit 99-03

  • Complete Kit
  • Fluorosilicone Drain Valve Orings
  • Viton Drain Valve Orings
Part Number:

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

11 Viton o-rings and 4 Parker® fuel sleeves. 3 Viton (type A) or 3 Viton (type B) or or 3 Fluorosilicone o-rings for the 7.3 yellow fuel drain valve core

  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.


O-ring Identification Chart - Click Here

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Product Reviews

Showing reviews 1-10 of 33 | Next

  1. The right stuff the frist time 5 Star Review

    Posted by on Dec 7th 2017

    Resealed the fuel bowl as promised

  2. Everything you need 5 Star Review

    Posted by on Nov 27th 2017

    I suffered from a fuel leak on my drain valve. Bought this with the regulator spring kit. Install took half the time I thought it would. 4 threaded fuel line fasteners, 1 electrical connector, 2 bolts, and 1 slip on hose for the drain valve, and out it comes. The new seals take no time to replace. Check everything for rust, then check it again!

  3. Exactly what was needed. 5 Star Review

    Posted by on Nov 9th 2017

    My engine was leaking diesel only when it was cold. This worked perfectly to correct the issue and get the truck running right again. RiffRaff was helpful in determining what was needed by using their chat feature. I’ve been using RiffRaff for all my truck needs since I found them.

  4. Just what I needed 5 Star Review

    Posted by on Oct 25th 2017

    Had a leak at the fuel drain on my fuel bowl. Just went ahead and rebuilt it with this kit. Everything I need to fix and install it. Thanks!

  5. Great kit 5 Star Review

    Posted by on Aug 30th 2017

    Easy to install no problem installing seals..

  6. No more drips 5 Star Review

    Posted by on Mar 14th 2017

    No more fuel drips in customers driveways. Worked great. Thanks.

  7. Works great 5 Star Review

    Posted by on Dec 31st 2016

    Had a few leaks at the fuel bowl and this kit stopped all of them 100%.

  8. Quality and Great Price 5 Star Review

    Posted by on Nov 19th 2016

    Great price and a quilty pricduct! Will continue doing business here! I will recommend for all 7.3 brothers and sisters!

  9. Awesome O-Ring Kit! 5 Star Review

    Posted by on Aug 18th 2016

    This kit is just the ticket if your fuel lines, fuel bowl and/or drain valve are leaking. Clean your fuel bowl well inside and out and follow the directions carefully and you won't have any issues. Worked like a charm for me!

  10. Great kit 5 Star Review

    Posted by on Jul 8th 2016

    Has everything you need.

Showing reviews 1-10 of 33 | Next