HomeAir and Fuel Delivery > Fuel StorageDorman 577-240 Fuel Filler Neck
Part #: 577-240

Dorman 577-240 Fuel Filler Neck

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⚙️ 14 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: Chevrolet and GMC, S10 and Sonoma
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Overview of Dorman Fuel Tank Filler Neck 577-240

The Dorman 577-240 fuel tank filler neck is designed for reliable fuel delivery in Chevrolet S10 and GMC Sonoma models. Constructed from durable steel, this fuel filler neck ensures a secure connection between the fuel cap and the fuel tank.

  • Material: Steel for enhanced durability and corrosion resistance
  • Length: 12.5 inches for proper fitment and fuel flow
  • Fill pipe inside diameter: 2 inches to accommodate standard fuel nozzles
  • Fuel cap not included
  • Package includes one fuel filler neck

Detailed Product Description

This fuel tank filler neck by Dorman is engineered to meet the specifications required for Chevrolet S10 and GMC Sonoma trucks. The steel construction provides strength and resistance to wear, ensuring long-term performance. With a length of 12.5 inches and a 2-inch inside diameter fill pipe, it facilitates smooth refueling without leaks or spills. The part number 577-240 corresponds specifically to this replacement component, making it a precise match for the intended vehicle models.

Common Applications and Problem Resolution

  • Replacement for damaged or rusted fuel filler necks on Chevrolet S10 and GMC Sonoma
  • Eliminates fuel leaks caused by cracks or corrosion
  • Prevents fuel vapor leaks that can trigger check engine lights
  • Restores proper fuel flow during refueling
  • Addresses fitment issues with aftermarket or worn filler necks

Installation Notes and Tips

  • Ensure the vehicle is parked on a level surface and the engine is cool before installation
  • Remove the old filler neck carefully to avoid damaging the fuel tank or surrounding components
  • Verify the 12.5-inch length and 2-inch diameter match the original part for proper fit
  • Use appropriate clamps and seals to secure the filler neck and prevent leaks
  • Check for any fuel odors or leaks after installation before driving

Quality Assurance and Warranty

Dorman manufactures this fuel tank filler neck to meet or exceed OEM standards for fit, form, and function. The steel material offers corrosion resistance suitable for fuel system components. While specific warranty details for part number 577-240 may vary, Dorman typically provides a limited warranty covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandDorman
Part Number577-240
Fill Pipe Inside Diameter2
Fuel Cap IncludedNo
Length12.5
MaterialSteel
Package Contents1 Fuel Filler Neck

This part fits 14 vehicles. Search below:

YearMakeModelBody TypeBed TypeLitersCylindersPositionNotes
2001ChevroletS10Standard Cab PickupStepsideN/A
2001ChevroletS10Extended Cab PickupStepsideN/A
2001GMCSonomaStandard Cab PickupStepsideN/A
2001GMCSonomaExtended Cab PickupStepsideN/A
2000ChevroletS10Stepside2.2LL4N/A
2000ChevroletS10Stepside4.3LV6N/A
2000GMCSonomaStepside2.2LL4N/A
2000GMCSonomaStepside4.3LV6N/A
1999ChevroletS10StepsideN/A
1999GMCSonomaStepsideN/A
1998ChevroletS10StepsideN/A
1998GMCSonomaStepsideN/A
1997ChevroletS10StepsideN/A
1997GMCSonomaStepsideN/A

* 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:

15725331FN675SK577240

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