HomeAir and Fuel Delivery > Fuel StorageDorman 577-801 Fuel Filler Neck
Part #: 577-801

Dorman 577-801 Fuel Filler Neck

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⚙️ 17 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Dodge, Ram 2500 and Ram 3500
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Overview of Dorman Fuel Tank Filler Neck 577-801

The Dorman 577-801 fuel tank filler neck is designed for reliable fuel delivery in Dodge Ram 2500 and Ram 3500 trucks. Constructed from durable steel, this fuel filler neck ensures a secure connection between the fuel cap and the fuel tank.

  • Made from sturdy steel material for long-lasting durability
  • Length of 19.9 inches for proper fitment
  • Fill pipe inside diameter of 1.75 inches for efficient fuel flow
  • Compatible with Dodge Ram 2500 and Ram 3500 models
  • Includes one fuel filler neck; fuel cap not included

Detailed Product Description

The Dorman 577-801 fuel tank filler neck is engineered to meet the specifications required for Dodge Ram 2500 and Ram 3500 trucks. Its steel construction provides resistance to corrosion and wear, ensuring consistent performance over time. Measuring 19.9 inches in length, this filler neck fits precisely to maintain a secure fuel path. The 1.75-inch inside diameter of the fill pipe allows for smooth fuel flow during refueling, reducing the risk of spills or slow fill times. This part is designed to replace worn or damaged filler necks, restoring proper fuel system function.

Common Applications and Issues Addressed

  • Replacement for cracked or leaking fuel tank filler necks
  • Fixes issues with fuel odors caused by damaged filler necks
  • Resolves slow or difficult refueling problems
  • Prevents fuel contamination by maintaining a sealed fuel path
  • Addresses rust or corrosion-related fuel system leaks

Installation Notes and Tips

Installation of the Dorman 577-801 fuel tank filler neck requires basic automotive tools and mechanical knowledge. Ensure the vehicle is parked on a level surface and the fuel system is depressurized before beginning. Remove the old filler neck carefully to avoid damaging surrounding components. Verify the new filler neck’s length and diameter match the original part. Tighten all clamps and connections securely to prevent leaks. Since the fuel cap is not included, retain or replace the existing cap as needed.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing dependable performance for Dodge Ram 2500 and Ram 3500 trucks. The 577-801 fuel tank filler neck undergoes quality inspections to ensure fit and function. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation for exact warranty terms.

BrandDorman
Part Number577-801
Fill Pipe Inside Diameter1.75
Fuel Cap IncludedNo
Length19.9
MaterialSteel
Package Contents1 Fuel Filler Neck

This part fits 17 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersFuel TypePositionNotes
1998DodgeRam 2500Standard Cab Pickup5.9LL6DIESELN/ATo 1/12/98
1998DodgeRam 2500Extended Cab Pickup5.9LL6DIESELN/ATo 1/12/98
1998DodgeRam 25005.9LL6DIESELN/ATo 1/12/98; Crew Cab Pickup
1997DodgeRam 2500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1997DodgeRam 2500Extended Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1997DodgeRam 3500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1997DodgeRam 3500Extended Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1996DodgeRam 2500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1996DodgeRam 2500Extended Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1996DodgeRam 3500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1996DodgeRam 3500Extended Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1995DodgeRam 2500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1995DodgeRam 2500Extended Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1995DodgeRam 3500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1995DodgeRam 3500Extended Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1994DodgeRam 2500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)
1994DodgeRam 3500Standard Cab Pickup5.9LL6DIESELN/AFits vehicles with Single Rear Wheel (SRW)

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

52018518FN530

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.