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DormanPart #: 577-340
Dorman 577-340 Fuel Tank Filler Neck
⚙️ 12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$121.24Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Fuel Tank Filler Neck options
Dorman 577-340 Fuel Tank Filler Neck
| Brand | Dorman |
| Part Number | 577-340 |
| Material | Steel |
| Length | 13.5 |
| Fuel Cap Included | No |
| Fill Pipe Inside Diameter | 1 |
| Package Contents | 1 filler neck; 2 hoses; 1 ground wire |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Body Type | Bed Length | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2011 | Chevrolet | Silverado 2500 HD | Standard Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | Chevrolet | Silverado 2500 HD | Extended Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | Chevrolet | Silverado 2500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | Chevrolet | Silverado 3500 HD | Standard Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | Chevrolet | Silverado 3500 HD | Extended Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | Chevrolet | Silverado 3500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | GMC | Sierra 2500 HD | Standard Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | GMC | Sierra 2500 HD | Extended Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | GMC | Sierra 2500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | GMC | Sierra 3500 HD | Standard Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | GMC | Sierra 3500 HD | Extended Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/A | |
| 2011 | GMC | Sierra 3500 HD | Crew Cab Pickup | 6' 6" Foot Bed | 6.0L | V8 | N/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:
22774524FN876
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.