DORMAN Fuel Tank Filler Neck 577-359

( Brand: Dorman ), ( Manufacturer Part Number: 577359 ), ( Part Type: Fuel Tank Filler ), ( Manufacturer Warranty: Limited Lifetime ), ( Cs-sku: 591 )

Review DORMAN Fuel Tank Filler Neck

The **Dorman 577359 (Part Number 577-359) Fuel Tank Filler Neck** is a high-quality, direct-fit replacement component designed to restore optimal fuel system performance in a wide range of vehicles. Engineered to meet or exceed OEM specifications, this filler neck is crafted from durable, corrosion-resistant materials to ensure long-lasting reliability under demanding driving conditions. Its precise fitment is tailored to match the original equipment dimensions, eliminating gaps or misalignments that could lead to fuel spillage, leaks, or improper closure of the fuel cap. The neck features a smooth, tapered design that facilitates easy insertion of the fuel nozzle while maintaining a secure seal, reducing the risk of vapor loss and fuel evaporation. Built to withstand the rigors of daily use, including exposure to fluctuating temperatures, UV radiation, and chemical exposure from gasoline, this filler neck is an ideal solution for both professional mechanics and DIY enthusiasts seeking a dependable upgrade. Whether replacing a worn or damaged original component or upgrading an older vehicle s fuel system for improved efficiency, the Dorman 577359 offers a seamless, hassle-free installation that enhances both functionality and aesthetics. Its compatibility with numerous applications including select Ford, Chevrolet, and other automotive models makes it a versatile choice for restorers, tuners, and everyday drivers looking to maintain peak fuel system integrity.

**Pros and Cons of buying a Dorman 577359 (577-359) Fuel Tank Filler Neck**

The Dorman 577359 fuel tank filler neck is a common aftermarket replacement part for various vehicles, particularly those with a 577-359 designation (such as some GM trucks and SUVs). Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **Compatibility and Fitment**

The Dorman 577359 is designed specifically for vehicles with the 577-359 fuel tank filler neck assembly, ensuring a proper fit without modification. This reduces the risk of leaks or improper installation compared to generic or mismatched parts.

2. **Quality and Durability**

Dorman is a well-known brand in the aftermarket automotive parts industry, known for producing reliable, high-quality components. The filler neck is typically made from durable materials that resist corrosion and wear over time, especially when compared to cheaper, no-name alternatives.

3. **Easy Installation**

The part is designed to be a direct replacement, meaning it should drop right into place without requiring extensive modifications to the fuel tank or surrounding components. This makes it a straightforward DIY-friendly repair for those with basic mechanical skills.

4. **Cost-Effective**

While not the absolute cheapest option on the market, the Dorman 577359 offers a good balance between price and quality. It is often more affordable than OEM (original equipment manufacturer) parts, which can be significantly more expensive, especially for older vehicles.

5. **Warranty Coverage**

Dorman parts typically come with a warranty, often ranging from one year to lifetime, depending on the retailer. This provides some peace of mind in case the part fails prematurely due to defects.

6. **Wide Availability**

The part is widely stocked at auto parts stores, both in physical locations and online (e.g., RockAuto, Amazon, AutoZone, or local dealers). This makes it easy to purchase without long wait times.

7. **Standardized Design**

Unlike some aftermarket parts that may require additional seals, gaskets, or modifications, the Dorman 577359 is designed to function as a plug-and-play replacement, reducing the chance of installation errors.

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### **Cons**

1. **Potential for Counterfeit or Low-Quality Copies**

Due to the popularity of Dorman parts, counterfeit or poorly made knockoffs can sometimes appear on the market, particularly on third-party websites. Buyers must verify the authenticity of the part, often by checking the packaging, serial numbers, or purchasing from reputable retailers.

2. **Limited Customization**

The filler neck is a standardized replacement part, meaning it does not offer any customization options (e.g., different lengths, materials, or features). If a vehicle requires a non-standard fit, this part may not be suitable.

3. **Possible Incompatibility with Modified Tanks**

If the original fuel tank has been altered (e.g., resized, drilled, or modified for fuel line routing), the Dorman 577359 may not fit perfectly. In such cases, additional modifications or a different part may be necessary.

4. **Dependence on Proper Sealing**

While the part itself is durable, improper installation such as failing to use the correct seals or tightening bolts evenly can lead to leaks. This requires careful attention during installation to avoid issues.

5. **Mixed Reviews on Longevity**

Some users report that while the Dorman 577359 holds up well, others have experienced premature wear or failure, particularly in vehicles with high mileage or harsh driving conditions. This variability depends on factors like fuel quality, environmental exposure, and maintenance habits.

6. **No Additional Features**

Unlike some premium aftermarket parts, the Dorman 577359 does not include extra features such as reinforced seals, corrosion-resistant coatings, or integrated fuel line connectors. For vehicles in extreme conditions (e.g., salt-heavy climates), this may be a drawback.

7. **Potential for Misidentification**

The "577-359" designation can sometimes be confused with other similar filler neck designs (e.g., 577-358 or 577-360). Buyers must double-check their vehicle s exact part number to ensure compatibility, as mixing up the numbers can lead to purchasing the wrong part.

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### **Conclusion**

The Dorman 577359 fuel tank filler neck is a solid, reliable choice for vehicles requiring a direct replacement for the 577-359 assembly. Its strengths lie in its compatibility, durability, ease of installation, and widespread availability, making it a practical option for both DIY enthusiasts and professional mechanics. However, potential buyers should be cautious of counterfeit parts, ensure proper installation, and verify compatibility with their specific vehicle to avoid issues.

For most drivers seeking a balance between cost and quality, the Dorman 577359 is a **recommended purchase**, provided it matches the vehicle s exact requirements. If there is any doubt about fitment or quality, consulting a trusted mechanic or cross-referencing with the vehicle s service manual can help confirm the best choice.

Purchase the Dorman 577359 from a reputable retailer (e.g., RockAuto, AutoZone, or a local dealership) and verify the part number matches your vehicle s specifications. Follow installation instructions carefully to ensure a leak-free fit. If the vehicle has been modified or operates in harsh conditions, consider supplementing with high-quality seals or additional corrosion protection. For most standard applications, this part is a dependable and cost-effective solution.

Details:

Durable construction - made of corrosion-resistant materials to reduce future failure potential. It merely guarantees they will provide a prepaid return label if you open and select did not fit. 2005 Lexus ES330. 2005 Toyota Solaria.

Direct replacement - this fuel filler neck is made to match the original equipment on specific vehicles. OE Numbers: DIRECT CROSS: TOYOTA,: TOYOTA. Item Specifics DIRECT OE CROSS. Trustworthy value - backed by team of engineers and quality control experts in the USA.

Product Specifications: Color: Black, Compatible Fuel Type: Gas, Cap Included: No, Hose length : 30 in, Material: Steel, Mounting Hardware Outside Diameter: 1.375 Package Contents: 1 Filler Neck, Quantity: 1, Packaging Box, Vent Metal, Line Attached: Yes. When opening a return, please state the reason for year, make and model of vehicle you purchased part.

part #: 577359 prices

• $159.59-$261.41

specifications fueltanksysteme:

• brand: Dorman
• mpn: 577359
• part type: Fuel Tank Filler
• manufacturer warranty: Limited Lifetime
• cs-sku: 591

payments fueltanksysteme:

• other
• credit card: Diners-club
• wallet: Paypal

seller fueltanksysteme:

• city: Whiteland, Indiana
• # reviews: 78475
• rating: 99.7%

returns fueltanksysteme:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

general fueltanksysteme:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

offer fueltanksysteme:

• sold: 0
• started: February 23, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

shipping fueltanksysteme:

• transit: 2-5 Days
• cost: $0.00
• type: Fixed
• class: Standard
• service: UPS Ground
• carrier: UPS

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