Dorman 577-947 Fuel Tank Filler Neck - Lower or Upper
Fuel Tank Filler Neck Replacement
This Dorman fuel tank filler neck is a direct replacement for specific Chevrolet, GMC, and Oldsmobile applications with a leaking or corroded filler neck. Built from steel with a black finish, it is engineered to match the original neck for a reliable repair on 1998-2000 Chevrolet Blazer, GMC Jimmy, and Oldsmobile Bravada models.
Part number 577-947 is made for gas applications and includes a vent line already attached for the correct fuel system layout. It is a practical OE-style solution when the original filler neck has rust, seepage, or damage around the tank connection.
- Steel construction for fuel system durability
- Black finish
- 32.25 in. overall length
- 2 in. fill pipe inside diameter
- Vent line attached with 1 metal vent
- For gasoline fuel systems
- Replacement fuel filler neck only
Fitment Details
- Fits 1999-2000 Chevrolet Blazer, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 Chevrolet Blazer, upper position, 2-piece fuel tank setup.
- Fits 1998 Chevrolet Blazer, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 Chevrolet Blazer, upper position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1999-2000 GMC Jimmy, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 GMC Jimmy, upper position, 2-piece fuel tank setup.
- Fits 1998 GMC Jimmy, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 GMC Jimmy, upper position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1999-2000 Oldsmobile Bravada, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 Oldsmobile Bravada, upper position, 2-piece fuel tank setup.
- Fits 1998 Oldsmobile Bravada, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 Oldsmobile Bravada, upper position, plastic tank; 18-gallon tank; 2-piece setup.
What It Helps Fix
- Fuel odor caused by a leaking filler neck
- Rust or corrosion at the fuel fill area
- Cracked or damaged neck sections
- Fuel splash-back during refueling
- Vent line issues tied to the original neck assembly
Installation Notes
Verify the vehicle’s tank configuration, position, and model year before installation. This replacement is for gas applications and does not include a fuel cap, hose, or mounting hardware. Confirm the fill pipe diameter and vent-line routing match the original part before assembly.
Quality Assurance
Dorman engineers this replacement filler neck to match the original part for the listed vehicle applications and tests it for fit and function. This part cross-references Spectra Premium FN700 for the same application.
Original: $142.32
-65%$142.32
$49.81Dorman 577-947 Fuel Tank Filler Neck - Lower or Upper
Fuel Tank Filler Neck Replacement
This Dorman fuel tank filler neck is a direct replacement for specific Chevrolet, GMC, and Oldsmobile applications with a leaking or corroded filler neck. Built from steel with a black finish, it is engineered to match the original neck for a reliable repair on 1998-2000 Chevrolet Blazer, GMC Jimmy, and Oldsmobile Bravada models.
Part number 577-947 is made for gas applications and includes a vent line already attached for the correct fuel system layout. It is a practical OE-style solution when the original filler neck has rust, seepage, or damage around the tank connection.
- Steel construction for fuel system durability
- Black finish
- 32.25 in. overall length
- 2 in. fill pipe inside diameter
- Vent line attached with 1 metal vent
- For gasoline fuel systems
- Replacement fuel filler neck only
Fitment Details
- Fits 1999-2000 Chevrolet Blazer, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 Chevrolet Blazer, upper position, 2-piece fuel tank setup.
- Fits 1998 Chevrolet Blazer, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 Chevrolet Blazer, upper position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1999-2000 GMC Jimmy, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 GMC Jimmy, upper position, 2-piece fuel tank setup.
- Fits 1998 GMC Jimmy, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 GMC Jimmy, upper position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1999-2000 Oldsmobile Bravada, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 Oldsmobile Bravada, upper position, 2-piece fuel tank setup.
- Fits 1998 Oldsmobile Bravada, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 Oldsmobile Bravada, upper position, plastic tank; 18-gallon tank; 2-piece setup.
What It Helps Fix
- Fuel odor caused by a leaking filler neck
- Rust or corrosion at the fuel fill area
- Cracked or damaged neck sections
- Fuel splash-back during refueling
- Vent line issues tied to the original neck assembly
Installation Notes
Verify the vehicle’s tank configuration, position, and model year before installation. This replacement is for gas applications and does not include a fuel cap, hose, or mounting hardware. Confirm the fill pipe diameter and vent-line routing match the original part before assembly.
Quality Assurance
Dorman engineers this replacement filler neck to match the original part for the listed vehicle applications and tests it for fit and function. This part cross-references Spectra Premium FN700 for the same application.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Fuel Tank Filler Neck Replacement
This Dorman fuel tank filler neck is a direct replacement for specific Chevrolet, GMC, and Oldsmobile applications with a leaking or corroded filler neck. Built from steel with a black finish, it is engineered to match the original neck for a reliable repair on 1998-2000 Chevrolet Blazer, GMC Jimmy, and Oldsmobile Bravada models.
Part number 577-947 is made for gas applications and includes a vent line already attached for the correct fuel system layout. It is a practical OE-style solution when the original filler neck has rust, seepage, or damage around the tank connection.
- Steel construction for fuel system durability
- Black finish
- 32.25 in. overall length
- 2 in. fill pipe inside diameter
- Vent line attached with 1 metal vent
- For gasoline fuel systems
- Replacement fuel filler neck only
Fitment Details
- Fits 1999-2000 Chevrolet Blazer, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 Chevrolet Blazer, upper position, 2-piece fuel tank setup.
- Fits 1998 Chevrolet Blazer, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 Chevrolet Blazer, upper position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1999-2000 GMC Jimmy, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 GMC Jimmy, upper position, 2-piece fuel tank setup.
- Fits 1998 GMC Jimmy, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 GMC Jimmy, upper position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1999-2000 Oldsmobile Bravada, lower position, 2-piece fuel tank setup.
- Fits 1999-2000 Oldsmobile Bravada, upper position, 2-piece fuel tank setup.
- Fits 1998 Oldsmobile Bravada, lower position, plastic tank; 18-gallon tank; 2-piece setup.
- Fits 1998 Oldsmobile Bravada, upper position, plastic tank; 18-gallon tank; 2-piece setup.
What It Helps Fix
- Fuel odor caused by a leaking filler neck
- Rust or corrosion at the fuel fill area
- Cracked or damaged neck sections
- Fuel splash-back during refueling
- Vent line issues tied to the original neck assembly
Installation Notes
Verify the vehicle’s tank configuration, position, and model year before installation. This replacement is for gas applications and does not include a fuel cap, hose, or mounting hardware. Confirm the fill pipe diameter and vent-line routing match the original part before assembly.
Quality Assurance
Dorman engineers this replacement filler neck to match the original part for the listed vehicle applications and tests it for fit and function. This part cross-references Spectra Premium FN700 for the same application.
