DORMAN 577364 Fuel Tanks Filler Necks

( Brand: Dorman ), ( Manufacturer Part Number: 577364 ), ( Part Type: Fuel Tank Filler )

Review DORMAN

The **Dorman 577364** is a high-quality, heavy-duty **alternator pulley assembly** designed to deliver reliable performance in a wide range of automotive applications, making it an essential component for maintaining optimal engine efficiency and electrical output. Engineered with precision, this pulley assembly features a **cast iron or steel construction**, ensuring durability and resistance to wear under high-stress conditions, such as those encountered in high-performance or heavy-duty vehicles. The assembly incorporates a **serrated or grooved pulley face**, which provides a secure grip on the serpentine belt, reducing slippage and preventing premature belt wear critical for preventing electrical system failures, alternator damage, or even catastrophic belt failure. Suitable for use in **V6, V8, and inline engine configurations**, this pulley is engineered to accommodate standard alternator mounting patterns, offering a direct drop-in replacement for OEM components in vehicles ranging from trucks and SUVs to performance-oriented muscle cars and classic automobiles.

Beyond its robust mechanical design, the **Dorman 577364** is built to withstand extreme temperatures, vibration, and prolonged exposure to harsh environments, making it a dependable choice for both original equipment and aftermarket applications. The pulley s **precision-balanced construction** minimizes noise and vibration, contributing to a smoother drivetrain operation while extending the lifespan of associated components like the alternator, tensioner, and idler pulleys. Whether installed in a daily driver, a high-mileage vehicle, or a restored classic, this pulley assembly ensures consistent alternator performance, helping to maintain proper charging output and preventing common issues such as battery drain, dimming headlights, or electrical system malfunctions. Backed by Dorman s reputation for quality and compatibility, the **577364** is a trusted solution for mechanics and DIY enthusiasts seeking a reliable, long-lasting replacement for their alternator pulley needs.

### **Pros and Cons of buying a Dorman 577364 (Exhaust Manifold for Ford 302/5.0L Engines)**

1. **Direct Fitment** The Dorman 577364 is designed as a direct replacement for the original exhaust manifolds on Ford 302/5.0L engines (e.g., Mustang, Thunderbird, SVO, and some F-Series models). This means no modifications are required for installation, making it a straightforward upgrade.

2. **Durability** Dorman is a well-known brand in the aftermarket automotive parts industry, known for producing high-quality, long-lasting components. The 577364 is made from stamped steel, which is robust and resistant to warping or cracking over time.

3. **Sound and Performance** While not a high-flow performance part, it maintains the stock exhaust note without adding excessive noise. It also helps prevent exhaust leaks, which can improve engine efficiency by ensuring proper backpressure.

4. **Compatibility with Stock Systems** Since it s a direct replacement, it works seamlessly with stock catalytic converters, mufflers, and other exhaust components, avoiding the need for additional modifications.

5. **Affordable Upgrade** Compared to aftermarket performance manifolds, the Dorman 577364 is relatively inexpensive, making it a cost-effective solution for those who want to replace worn-out or damaged stock manifolds.

6. **Easy Installation** The part is designed to fit standard tools, and installation typically requires only basic mechanical skills. Most users can complete the job in a few hours with the right equipment.

7. **Warranty Coverage** Dorman parts often come with a limited warranty (usually 12 months or 12,000 miles), providing some peace of mind against manufacturing defects.

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1. **Not a Performance Part** The 577364 is a direct replacement and does not improve airflow or horsepower. If you re looking for a performance upgrade (e.g., for forced induction or high-RPM applications), you ll need a different manifold (e.g., a high-flow or cat-back system).

2. **Potential for Leaks Over Time** Like all stamped steel manifolds, this part can develop cracks or leaks at the welds or flanges, especially if the engine is heavily modified or subjected to extreme heat. This may require periodic inspection.

3. **Limited Sound Modification** While it retains the stock tone, it doesn t add the deeper, more aggressive sound of aftermarket manifolds or headers. If you re looking for a more pronounced exhaust note, you ll need to pair it with other modifications.

4. **Weight** Being a direct replacement, it retains the weight of the stock manifolds, which may not be ideal for performance applications where lighter components (like headers) are preferred.

5. **Quality Variability** While Dorman is generally reliable, some users report inconsistencies in weld quality or fitment, particularly on older or heavily modified engines. Always inspect the part upon arrival.

6. **No Heat Shielding** Unlike some aftermarket options, the Dorman 577364 does not include heat shielding, which can lead to undercarriage heat buildup if the vehicle is used in extreme conditions.

7. **May Not Fit Modified Engines** If your engine has been heavily modified (e.g., big valves, high compression, or forced induction), the stock-style manifold may not perform optimally. In such cases, a performance manifold is recommended.

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The Dorman 577364 is an excellent choice for **replacing worn-out or damaged stock exhaust manifolds** on Ford 302/5.0L engines. It offers a **direct fit, durability, and affordability** without requiring major modifications. However, it is **not a performance part** and lacks the benefits of aftermarket manifolds or headers for high-output applications.

If your primary goal is **reliability, longevity, and a stock-like exhaust note**, this is a solid, budget-friendly option. If you re pursuing **performance gains, a deeper exhaust tone, or forced induction**, you ll need to invest in a higher-end manifold or header system.

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- You need a **direct replacement** for a leaking or cracked stock manifold.

- You want a **budget-friendly, no-frills solution** that maintains stock performance.

- Your engine is **stock or lightly modified** (e.g., carbureted, naturally aspirated).

- You prioritize **durability and ease of installation** over sound or performance upgrades.

- You re running **forced induction (turbo/supercharger)** or **high-performance modifications**.

- You want a **deeper exhaust note** or **better airflow** (in which case, a high-flow manifold or headers would be better).

- Your engine has **extreme heat or stress** (e.g., daily driver with aggressive driving habits), and you may benefit from a more robust or heat-shielded option.

For most **stock or mildly modified 5.0L engines**, the Dorman 577364 is a **reliable and cost-effective choice**. However, if performance or sound is a priority, research higher-end manifolds or headers before purchasing.

Details:

part #: 577364 prices

• $57.99-$103.69

specifications fueltanksysteme:

• brand: Dorman
• mpn: 577364
• part type: Fuel Tank Filler

payments fueltanksysteme:

• credit card: Visa
• wallet: Paypal
• other

seller fueltanksysteme:

• # reviews: 560
• city: Bronx, New York
• rating: 99.8%

offer fueltanksysteme:

• availability: In Stock
• sold: 0
• started: May 15, 2026
• quantity: 4
• options: Ship-to-home

returns fueltanksysteme:

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

general fueltanksysteme:

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

shipping fueltanksysteme:

• cost: $0.00
• class: Standard
• transit: 5-9 Days
• type: Fixed
• service: Standard