Dorman 904-233 Fuel Injector O-Ring Kit

Dorman Fuel Injector O-Ring Kit for Ford Super Duty

This Dorman fuel injector O-ring kit is built for engine service on 2008-2010 Ford F-250 Super Duty and 2008-2010 Ford F-350 Super Duty applications. Dorman 904-233 uses Viton construction to handle exposure to fuel, oil, and elevated temperatures during injector sealing service.

Key Features

• Fuel injector O-ring kit for specified Ford Super Duty diesel engine applications
• Viton material for resistance to fuel, oil, and heat exposure
• Gray round O-rings with matched washers for injector sealing service
• Inside diameter: 22.9 mm; thickness: 2.75 mm; outside diameter: 27.5 mm
• Direct replacement service kit from Dorman, part number 904-233

Detailed Description

Dorman 904-233 is a fuel injector O-ring kit engineered for full injector seal replacement on the listed engine applications. It is built around durable Viton O-rings, which are selected for their ability to maintain sealing performance in environments exposed to diesel fuel, engine oil, and high operating temperatures. This makes the kit a practical choice for injector reseal service on 2008-2010 Ford F-250 Super Duty and 2008-2010 Ford F-350 Super Duty trucks. This part cross-references MAHLE GS33703 for the same application.

What It Helps Fix

• Fuel seepage around injector seals
• Hard starting caused by injector seal leakage
• Loss of fuel pressure at the injector interface
• Oil contamination at worn injector sealing points
• Service issues related to aged or heat-hardened O-rings

Installation Notes and Tips

Inspect injector bores and sealing surfaces before installation. Clean all mating areas thoroughly and replace worn or damaged components as needed during injector service. Confirm the injector seal dimensions match the engine specification before assembly. Fits 2008-2010 Ford F-250 Super Duty, N/A. Fits 2008-2010 Ford F-350 Super Duty, N/A.

Quality Assurance

Dorman manufactures this kit with materials selected for exposure to fuel, oil, and extreme temperatures. Part number 904-233 is listed with OE-style interchange references 8C3Z9229A and 1855644C3 for the same application.