GATES SX-1965 Fuel Tank Cap 3.7L 3.9L 5.2L 5.9L 7.2L L6 V6

( Brand: Gates ), ( Manufacturer Part Number: SX-1965 ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Height: 3.000 ), ( Item Width: 3.630 ), ( Manufacturer Warranty: Recommended Service Interval ), ( Ipn: C553 47-33 ), ( Compatible Year: 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Dodge 3.7l 3.9l 5.2l 5.9l 7.2l L6 V6 fits D100 FJ 1978–1989

The **Gates SX-1965 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the iconic 1978 through 1989 Dodge D100 series, including all variants of the legendary **3.7L, 3.9L, 5.2L, 5.9L, 7.2L, L6 V6, and L6 V8** engines. Crafted from durable, corrosion-resistant materials, this fuel cap is built to withstand the demands of both daily driving and spirited performance applications, ensuring a secure, leak-proof seal while maintaining the classic aesthetic of your vehicle. The SX-1965 features a robust, threaded design that matches the original equipment manufacturer (OEM) specifications precisely, guaranteeing a perfect fit without the need for modifications. Its robust construction includes a reinforced lid with a smooth, ergonomic grip, allowing for easy opening and closing while minimizing the risk of accidental spills or leaks critical for maintaining fuel integrity and preventing vapor loss. The cap is also designed with a modern, yet nostalgic finish, blending seamlessly with the vintage styling of the D100 while incorporating advanced sealing technology to prevent fuel evaporation and reduce emissions. Whether you're restoring a classic muscle car, upgrading a daily driver, or simply ensuring reliability for high-mileage performance, the Gates SX-1965 is a premium choice that combines durability, functionality, and authenticity. Built to meet or exceed OEM standards, this fuel cap is an essential component for any enthusiast seeking both performance and longevity in their Dodge D100.

**Pros and Cons of Buying a Gates SX-1965 Fuel Tank Cap for a 1978 1989 Dodge D100 (3.7L 7.2L V6/V8)**

### **Pros**

1. **Direct Fitment** The Gates SX-1965 is specifically designed for the 1978 1989 Dodge D100 series, ensuring compatibility with the 3.7L, 3.9L, 5.2L, 5.9L, 7.2L V6, and V8 engines. This eliminates the need for modifications or adapters, reducing installation complexity.

2. **Durable Construction** Gates is a reputable manufacturer known for producing high-quality fuel system components. The SX-1965 is made from sturdy materials, including a reinforced metal body and a secure sealing mechanism, which helps prevent leaks and contamination.

3. **Seal Integrity** The cap features a reliable gasket or seal that prevents moisture, dirt, and debris from entering the fuel tank. This is critical for maintaining fuel quality and preventing engine performance issues over time.

4. **Easy Installation** The design is straightforward, requiring minimal tools to replace. Most users can install it without professional assistance, saving labor costs.

5. **Compatibility with Aftermarket Mods** If you ve modified your fuel system (e.g., added a fuel pump, filter, or line), the Gates cap is designed to work seamlessly with these upgrades, ensuring proper fuel flow and system integrity.

6. **Prevents Fuel Evaporation** A properly sealed cap reduces fuel evaporation, which is especially beneficial in hot climates or during long periods of vehicle inactivity.

7. **Cost-Effective Solution** Compared to OEM replacements, the Gates cap is often priced competitively while offering similar or superior quality. This makes it a practical choice for budget-conscious buyers.

8. **Reduces Fuel Contamination Risk** The cap s design minimizes the entry of moisture, rust, or sediment into the fuel tank, which can clog fuel injectors or damage the engine over time.

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### **Cons**

1. **Potential for Counterfeit Products** Like many aftermarket parts, the Gates SX-1965 may have counterfeit or low-quality knockoffs available, especially from unauthorized sellers. Buying from a trusted retailer (e.g., RockAuto, Summit Racing, or an authorized Gates dealer) mitigates this risk.

2. **Stiffness or Difficulty Opening/Closing** Some users report that the cap can become stiff over time, particularly if left closed for extended periods. This may require occasional lubrication (e.g., with silicone spray) to maintain smooth operation.

3. **Limited Availability in Some Regions** Depending on where you purchase it, the Gates SX-1965 might not be as widely stocked as OEM or other aftermarket alternatives. Online retailers are the most reliable source.

4. **No OEM Warranty Coverage** Since this is an aftermarket part, it won t be covered under the vehicle s original manufacturer warranty. However, Gates does offer its own warranty (typically 1 2 years), which provides some recourse if the part fails prematurely.

5. **Possible Incompatibility with Heavy Mods** While the cap fits standard applications, extreme modifications (e.g., large fuel tanks, custom fuel lines, or high-performance setups) might require additional adjustments or a different cap design.

6. **Thread Wear Over Time** If the original fuel tank threads are damaged or stripped, the new cap may not seal perfectly, leading to leaks. In such cases, the tank threads may need cleaning or replacement.

7. **Price Sensitivity** For buyers on a tight budget, the Gates cap may be slightly more expensive than generic or no-name alternatives. However, the trade-off in quality and longevity often justifies the cost.

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### **Conclusion**

The **Gates SX-1965 fuel tank cap** is a **strong, reliable choice** for 1978 1989 Dodge D100 owners, offering direct fitment, durability, and ease of installation. Its pros such as leak prevention, compatibility with aftermarket mods, and brand reputation outweigh the minor cons (e.g., potential counterfeits, stiffness, or limited availability). For most users, the benefits far exceed the drawbacks, making it a **highly recommended upgrade** over OEM or generic alternatives.

- **Buy from a trusted retailer** (e.g., RockAuto, Summit Racing, or an authorized Gates dealer) to avoid counterfeit parts.

- **Inspect the cap and tank threads** before installation to ensure a proper seal.

- **Lubricate the cap occasionally** if it becomes stiff to maintain functionality.

- **Consider pairing it with a fuel filter upgrade** for optimal fuel system health.

If you prioritize **quality, longevity, and peace of mind**, the Gates SX-1965 is the best option. For those on a strict budget, a generic cap *might* suffice, but the risk of leaks or premature failure increases.

Details:

Gates Fuel Tank Cap for 1978 1989 Dodge D100 3.7L 3.9L 5.2L 5.9L 7.2L L6 V6 Fj: Status: In Stock.

part #: sx1965 prices

• $22.08-$37.12

specifications fueltanksysteme:

• for models: D100, Fj
• for makes: Dodge
• for years: 1978-1989
• brand: Gates
• mpn: Sx-1965
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item height: 3.000
• item width: 3.630
• manufacturer warranty: Recommended Service Interval
• ipn: C553 47-33
• compatible year: 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

offer fueltanksysteme:

• quantity: 10
• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: February 8, 2026

shipping fueltanksysteme:

• service: Standard, Expedited
• transit: 3-6 Days
• type: Fixed
• cost: $0.00
• class: Standard, Expedited

seller fueltanksysteme:

• rating: 99.5%
• # reviews: 620533
• city: Indianapolis, Indiana

general fueltanksysteme:

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

payments fueltanksysteme:

• other
• credit card: Visa
• wallet: Google-pay

returns fueltanksysteme:

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

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