Dorman 904-8050 Fuel Injector O-Ring Kit

Fuel Injector O-Ring Kit for Engine Service

Dorman 904-8050 is a fuel injector O-ring kit built for full injector seal replacement on the specified engine. It uses durable rubber O-rings in multiple sizes and colors to help maintain a reliable seal where fuel, oil, and heat exposure are common.

For technicians servicing fuel injector O-ring replacement on Honda Civic or Toyota Corolla applications, this kit provides the sealing components needed for a proper injector reseal. Part number 904-8050 is also referenced by interchange number 3330537 for the same application.

Key Features

• Fuel injector O-ring kit for engine fuel system service
• Rubber construction for resistance to fuel, oil, and elevated temperatures
• Includes O-rings in black, green, purple, and yellow
• Oval rim shape for specified injector sealing points
• Multiple inside and outside diameters to match the engine’s injector interfaces
• Dorman 904-8050 for OE-style fuel injector seal replacement

Detailed Description

This Dorman fuel injector O-ring kit is organized for a complete injector seal refresh on the specified engine. The O-rings are made from durable rubber and are sized to handle the sealing surfaces found in fuel injector service, where exposure to gasoline, engine oil, and heat can cause hardening, flattening, or leakage over time. If you are searching for a fuel injector O-ring kit for Honda Civic or Toyota Corolla fuel system repair, 904-8050 is a direct service part to consider.

The kit includes O-rings with inside diameters of 1.24, 1.30, and 1.36, along with outside diameters of 1.38, 1.44, 1.5, and 1.57. Thickness measurements include 0.07 and 0.103, and the oval rim shape supports the specified injector sealing design. Dorman 904-8050 is suited for injector reseal work where maintaining a tight seal is critical to fuel system performance.

What It Helps Address

• Fuel odor or seepage around injector seals
• Hard, flattened, or cracked injector O-rings
• Fuel leaks at injector-to-rail or injector-to-manifold sealing points
• Rough running caused by vacuum or fuel sealing issues
• Service needs during injector removal and reseal work

Installation Notes and Tips

Clean the injector and mating surfaces before installation, and inspect the injector body for wear or damage that could affect sealing. Lightly lubricate the O-rings with clean engine oil or an approved fuel-system lubricant during assembly to reduce tearing and help the seals seat correctly. Confirm the O-ring profile, diameter, and color match the original injector configuration before reassembly.

For fitment-based searches, this part is used in fuel injector O-ring replacement service for the specified engine application rather than universal use. Verify the engine and injector design before ordering Dorman 904-8050.

Quality Assurance

Dorman manufactures service parts to support repair work with application-specific fitment and material selection. The rubber O-rings in this kit are built to withstand exposure to fuel, oil, and extreme temperatures encountered in engine service.