Dorman Fuel Injector Line 904-966 — Direct-Fit Replacement with Vehicle-Specific Mounting Hardware for GM Engines

The Dorman 904-966 fuel injector line is a direct-fit replacement line engineered to restore factory routing, pressure tolerance, and mounting for select GM engines.

If a fuel injector line on your Cadillac, Chevrolet, or GMC vehicle has been damaged or requires replacement after service, the Dorman 904-966 offers a ready-to-install substitute that mirrors the original part's shape and mounting points. This replacement arrives with any vehicle-specific mounting hardware needed for a complete swap and is manufactured with hardened materials designed to withstand normal fuel system pressures.

Will this fuel injector line fit my vehicle?

The Dorman 904-966 is built for precise fitment on a range of model years and trims from Chevrolet, GMC, and Cadillac. Fitment depends on the exact model year and trim; use the vehicle/garage lookup to confirm compatibility before ordering.

• Compatible with many late-model Cadillac Escalade and Escalade ESV years.
• Fits multiple Chevrolet models including Camaro, Corvette, Silverado, Tahoe, Suburban, and Express vans for listed years.
• Supports several GMC Sierra, Yukon, and Savana models across specified years.
• Always verify by entering make, model, year, and trim in the garage tool for a final fit confirmation.

How does Dorman ensure this line matches the original?

Dorman engineers this line to replicate the original equipment geometry and mounting layout so it installs like the OE component. Materials and manufacturing tolerate the pressures and conditions the line will face in normal engine operation.

• Precision-formed bends and attachment points for accurate routing.
• Manufactured with a material-hardening process for pressure resilience.
• Supplied with vehicle-specific mounting hardware for an easier installation.
• Quality-tested to meet durability expectations without dealership pricing.

When should I replace the entire fuel injector line instead of just a fitting?

Fuel injector lines often use crush-type seals designed for single installation; once disturbed, the seal integrity can be compromised. Replacing the whole line avoids leaks, improves reliability, and ensures the line seals and mounts exactly as intended.

• Crush seals are one-time-use—replacement of the full line is typically required after disassembly.
• Visible damage, corrosion, or fuel leaks are clear signs to replace the line.
• Replacing the entire assembly prevents mismatched fittings or improper routing that can cause issues later.

What should I expect during installation?

Installation follows the original routing and mounting; technicians will remove the old line, transfer or replace fittings, and install the Dorman part with the included hardware. Basic mechanical skill and appropriate safety measures for fuel systems are required.

• Flush and relieve fuel system pressure before starting work.
• Use supplied mounting brackets and vehicle-specific hardware for correct alignment.
• Replace crush-type seals as required to guarantee a leak-free connection.
• Test for leaks after installation and before road testing the vehicle.

Who is this for: The Dorman 904-966 fuel injector line is for owners and mechanics working on compatible Cadillac, Chevrolet, and GMC vehicles who need a cost-effective, quality-tested replacement for a worn or damaged fuel injector line. It's intended for people who want an OE-style fit and reliable materials without paying dealership prices—ideal for routine repairs, post-collision restoration, or during engine service when one-time crush seals or line damage necessitate replacement.