Fuel Injector O-Ring Kit Dorman Nitrile Black 904-313

Description

Product Overview

The Dorman Fuel Injector O‑Ring Kit (model 904-313) is a precision‑engineered solution designed to restore the integrity of your fuel injection system. Each kit contains a single black nitrile rubber O‑ring, machined to exact dimensions that correspond with OEM part numbers 4798375, 5011885AB, 5011886AA, and 5012558AA. Weighing just 0.704 ounces, the lightweight component is built for durability, resisting fuel, oil, and temperature extremes. The kit is packaged for easy identification and includes the manufacturer part number for quick reference.

Usage

This O‑ring is intended for professional mechanics and DIY enthusiasts performing fuel injector service on compatible vehicles. Ideal for routine maintenance, injector replacement, or repair of damaged seals, the kit ensures a tight, leak‑free connection that maintains proper fuel pressure. Suitable for both gasoline and diesel applications, it performs reliably in high‑heat engine bays and under demanding driving conditions.

Why Choose Us

Dorman brings over a century of automotive experience to every product. Our O‑ring kits are manufactured in the United States to strict quality standards, guaranteeing consistent fit and performance. Each kit undergoes rigorous testing to meet or exceed OEM specifications, providing confidence that the seal will endure the rigors of daily driving. Backed by a dedicated team of product experts, Dorman offers reliable support and comprehensive fitment data to ensure you select the correct component for your vehicle.

Key Features

• Direct OEM replacement – matches original equipment specifications for a perfect fit.
• Durable nitrile rubber – resistant to fuel, oil, and high temperatures for long‑lasting performance.
• Precise machining – ensures a leak‑free seal and maintains proper fuel pressure.
• Easy installation – designed for quick replacement without special tools.
• Backed by Dorman expertise – supported by a century of automotive knowledge and U.S. manufacturing.

FAQ

What vehicles are compatible with this O‑ring kit?

The kit fits any vehicle that uses the OEM part numbers listed (4798375, 5011885AB, 5011886AA, 5012558AA). Use Dorman’s fitment tool to confirm compatibility before purchase.

Can I install the O‑ring myself?

Yes, the O‑ring is designed for straightforward installation. Ensure the injector and surrounding surfaces are clean, then gently press the O‑ring into place using a suitable installer tool.

Is nitrile rubber suitable for diesel fuel systems?

Absolutely. Nitrile rubber offers excellent resistance to both gasoline and diesel fuels, making it ideal for a wide range of fuel injection applications.

How does Dorman guarantee the quality of this kit?

Each O‑ring is produced in a controlled U.S. facility, undergoes dimensional inspection, and is tested for fuel compatibility and temperature resilience to meet OEM standards.

What should I do if the O‑ring leaks after installation?

Verify that the O‑ring is seated correctly and that the injector surfaces are free of debris. If the leak persists, contact Dorman customer support for assistance or a replacement.