Elring 268.550 Fuel Pump Seal

Fuel Pump Seal for GM HD Applications

Elring 268.550 is a fuel pump seal built as an O-ring style sealing component for fuel system service. With a 44 mm inner diameter, 3 mm thickness, and ACM (polyacrylate) material, it helps maintain a tight seal where fuel pressure and flow must stay consistent.

Compatible With select Chevrolet Silverado HD, GMC Sierra HD, Chevrolet Express, and GMC Savana applications, this seal supports fuel system repairs where sealing integrity matters. Elring 268.550 is also referenced by part number 268.550 for ordering and cross-checking.

Key Features

• Fuel pump seal in O-ring shape
• 44 mm inner diameter for specified fuel system fitment
• 3 mm thickness for sealing interface support
• ACM (polyacrylate) material for fuel system sealing use
• Direct-fit style component for listed GM truck and van applications

Detailed Description

This Elring fuel pump seal is engineered for fuel delivery service where a stable seal is needed to help preserve fuel pressure and flow. The O-ring design and ACM construction make it a practical sealing solution for fuel system maintenance on vehicles such as the Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD, Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, and GMC Savana 3500. Use part number 268.550 when matching the seal to the correct application.

This part cross-references 6M343C053AA and 029 997 28 45 for the same application.

What It Helps Fix

• Fuel seepage at the pump seal interface
• Loss of fuel pressure caused by a worn sealing ring
• Hard-start or drivability issues tied to fuel system leakage
• Fuel odor from a compromised pump seal
• Service failures after fuel pump or fuel system disassembly

Installation Notes and Tips

Confirm the seal dimensions before installation: 44 mm inner diameter and 3 mm thickness. Inspect the sealing surface for debris, scoring, or distortion, and replace the seal during fuel pump service whenever the original O-ring shows flattening, cracking, or swelling. Verify vehicle application by year, make, and model before ordering Elring 268.550.

Quality Assurance

Elring is a recognized name in sealing systems, and this fuel pump seal is built to support consistent fuel system sealing performance in the listed GM applications.