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OE Quality
60-Day Returns
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DormanPart #: 577-403
Dorman 577-403 Fuel Tank Filler Neck
⚙️ 6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$186.54Free 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, Sierra 1500, and Silverado 1500
🔄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 577-403 Fuel Tank Filler Neck
| Brand | Dorman |
| Part Number | 577-403 |
| Material | Acero, goma |
| Material | Rubber |
| Material | Steel |
| Length | 43 |
| Hose Included | Oui |
| Hose Included | Sí |
| Hose Included | Yes |
| Color | Black |
| Color | Negro |
| Color | Plateado |
| Color | Silver |
| Clamps Included | Oui |
| Clamps Included | Sí |
| Clamps Included | Yes |
| Mounting Hardware Included | No |
| Mounting Hardware Included | Non |
| Fuel Cap Included | No |
| Fuel Cap Included | Non |
| Vent Line Attached | Oui |
| Vent Line Attached | Sí |
| Vent Line Attached | Yes |
| Vent Quantity | 1 |
| Vent Quantity | 1 ensamble de manguera del calentador |
| Fill Pipe Inside Diameter | 34 |
| Compatible Fuel Type | Gas |
| Vent 1 Inside Diameter | 8 |
| Vent 1 Type | Combinación de metal y manguera |
| Vent 1 Type | Metal and hose combination |
| Cap Type | No cap |
| Cap Type | Sin tapa |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2018 | Chevrolet | Silverado 1500 | Standard Cab Pickup | N/A | |
| 2018 | GMC | Sierra | Standard Cab Pickup | N/A | |
| 2018 | GMC | Sierra 1500 | Standard Cab Pickup | N/A | |
| 2017 | Chevrolet | Silverado 1500 | Standard Cab Pickup | N/A | |
| 2017 | GMC | Sierra | Standard Cab Pickup | N/A | |
| 2017 | GMC | Sierra 1500 | Standard Cab Pickup | 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:
8476692284766923
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.