GATES SX-4009 Fuel Tank Gas Cap International Cw 1300A 3.9L 4.3L 5.0L L6 V8

( Brand: Gates ), ( Manufacturer Part Number: SX-4009 ), ( 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: C848 31-57 ), ( Compatible Make: International ), ( Compatible Model: 1300a ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap International 3.9l 4.3l 5.0l L6 V8 Gas Cw fits 1966

The **Gates SX-4009 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the iconic 1966 International Harvester 1300A series, including its robust 3.9L, 4.3L, and legendary 5.0L straight-six V8 gasoline-powered models. Crafted from premium, corrosion-resistant materials, this fuel cap is built to withstand the demands of heavy-duty agricultural, industrial, and commercial applications while ensuring a secure, leak-proof seal. The cap features a robust, threaded design that matches the original equipment manufacturer (OEM) specifications, guaranteeing a perfect fit on the 1300A s fuel tank without compromising functionality. Its durable construction includes a reinforced lid with a smooth, ergonomic grip, allowing for easy installation and removal even in tight or challenging working conditions. The cap is equipped with a reliable spring-loaded mechanism, ensuring a tight seal that prevents fuel vapor escape and minimizes the risk of spills or contamination, which is critical for maintaining engine performance and longevity. Whether used in a classic restored 1300A or a well-maintained workhorse, this Gates fuel cap delivers both form and function, embodying the reliability that International Harvester vehicles are known for. Its compatibility extends beyond just the fuel tank it also aligns with the aesthetic and mechanical integrity of the vehicle s original design, making it an ideal choice for enthusiasts and professionals alike who demand authenticity and durability.

### Pros and Cons of buying a Gates SX-4009 Fuel Tank Cap for a 1966 International Harvester 1300A (3.9L, 4.3L, 5.0L L6/V8 Gas, CW)

1. **Compatibility** The Gates SX-4009 is specifically designed to fit the 1966 International Harvester 1300A series, including the 3.9L inline-six, 4.3L inline-six, and 5.0L V8 engines. This ensures a proper fit without modifications, reducing the risk of leaks or improper sealing.

2. **Durability** Gates is a well-known brand in the automotive aftermarket, known for producing high-quality, long-lasting fuel tank caps. The SX-4009 is made from durable materials, including a sturdy metal body and a reliable sealing mechanism, which helps prevent fuel evaporation and contamination.

3. **Pressure Relief Valve** The cap includes a pressure relief valve, which helps maintain proper fuel tank pressure. This prevents over-pressurization, which can lead to fuel leaks or damage to the fuel system.

4. **Vapor Lock Protection** The design of the Gates SX-4009 helps reduce the risk of vapor lock, a common issue in older vehicles where fuel vapors can block fuel flow to the engine, especially in hot weather.

5. **Easy Installation** The cap is designed for straightforward installation, requiring no special tools or modifications. This makes it a convenient replacement option for DIYers or mechanics.

6. **Fuel Preservation** A properly sealed fuel tank cap helps keep moisture and contaminants out of the fuel system, extending the life of the fuel and preventing corrosion in the tank.

7. **OEM Replacement Option** If the original cap is damaged or missing, the Gates SX-4009 serves as a direct replacement, maintaining the vehicle s original appearance and functionality.

---

1. **Cost** While not excessively expensive, the Gates SX-4009 may be slightly more costly than generic or aftermarket alternatives. However, the quality often justifies the price.

2. **Availability** Depending on the region, the Gates SX-4009 might not be as widely stocked as some other brands. You may need to order it online or from a specialty parts supplier.

3. **Potential Counterfeit Concerns** As with any popular aftermarket part, there is a risk of purchasing a counterfeit Gates product. Buying from a reputable dealer or directly from Gates authorized distributors can mitigate this risk.

4. **Thread Compatibility** While the Gates SX-4009 is designed for the 1966 International Harvester 1300A, there is always a slight chance of thread mismatches if the original cap was modified or if the tank has been repaired. A visual inspection of the fuel tank opening before installation is recommended.

5. **Limited Customization** Unlike some aftermarket caps, the Gates SX-4009 does not offer custom colors or additional features (e.g., LED lights). If aesthetics are a priority, you may need to explore other options.

6. **Potential for Wear Over Time** While durable, no fuel cap is indestructible. Over many years or with frequent use, the sealing gasket or pressure relief valve may wear out, requiring eventual replacement.

---

The Gates SX-4009 fuel tank cap is an excellent choice for a 1966 International Harvester 1300A, offering a balance of compatibility, durability, and functionality. Its OEM-like fit, pressure relief features, and reputation for quality make it a reliable upgrade or replacement option. While it may not be the absolute cheapest option, the long-term benefits such as preventing fuel evaporation, reducing vapor lock, and maintaining fuel system integrity outweigh the minor drawbacks.

For most owners of this classic vehicle, the Gates SX-4009 is the best available replacement cap, provided it is purchased from a trusted source to avoid counterfeit issues.

Purchase the Gates SX-4009 from an authorized dealer, online retailer with good reviews (such as RockAuto, eBay from verified sellers, or Gates official website), or a reputable classic vehicle parts supplier. Before installation, inspect the fuel tank threads and ensure they match the cap s design. If the original cap was damaged or modified, consider consulting a mechanic to confirm compatibility. Overall, this is a strong recommendation for anyone looking to restore or maintain their 1966 International Harvester 1300A.

Details:

part #: sx4009 prices

• $23.90-$26.54

specifications fueltanksysteme:

• for years: 1966
• brand: Gates
• mpn: Sx-4009
• 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: C848 31-57
• compatible make: International
• compatible model: 1300a
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

returns fueltanksysteme:

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

seller fueltanksysteme:

• # reviews: 625286
• city: Indianapolis, Indiana
• rating: 99.5%

offer fueltanksysteme:

• availability: In Stock
• quantity: 10
• options: Ship-to-home
• started: February 24, 2026
• sold: 0

payments fueltanksysteme:

• credit card: Diners-club
• other
• wallet: Apple-pay

shipping fueltanksysteme:

• type: Fixed
• service: Standard, Expedited
• cost: $0.00
• class: Standard, Expedited
• transit: 2-6 Days

general fueltanksysteme:

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

Gates SX-4009 Is Similar To:

• 10823 Stant Fuel Tank Cap Carquest Gates Cl 00333420082364 (35.2% similar) ...(March 25th, 2018)
• 23924 Gates Corporation Fuel Fill Hose (27.9% similar) Suitable for use with gasoline, gasohol blends of ethanol, methanol, ether's. 5 weight lbs. Suitable for diesel and bio diesel to B20. Cuts easily with knife and wire cutters. Also works well on auxiliary fuel tanks recreational vehicles. Note: use Gates super hex clamps for reliable installation ...(May 27th, 2018)
• 23930 Gates Fuel Filler Hose (28.6% similar) ...(November 4th, 2017)
• 23936 Gates Corporation Fuel Fill Hose (27.9% similar) Note: use Gates super hex clamps for reliable installation. Cuts easily with knife and wire cutters. 25 weight lbs. Suitable for use with gasoline, gasohol blends of ethanol, methanol, ether's. Packaging 5 per carton standard pack 8 product attributes type fuel fill hose specifications center line ...(April 25th, 2018)
• 23940 Gates Fuel Filler Hose (28.6% similar) If your looking to increase gas mileage, get better engine performance, or help the environment 123AUTOPARTS on motors is place buy now...(January 24th, 2019)
• 23964 Gates Fuel Filler Hose (28.6% similar) ...(June 30th, 2018)
• 23968 Gates Fuel Filler Hose (28.6% similar) Get in, sit down, hold on, shut up and enjoy the ride...(March 10th, 2018)
• 23972 Gates Fuel Filler Hose (28.6% similar) Thanks again for trusting DI-auto to get you the right part as quickly possible...(October 15th, 2018)
• 24702 Gates Fuel Filler Hose (28.6% similar) ...(April 3rd, 2018)
• 24703 Gates Fuel Filler Hose (28.6% similar) Small manufacture updates to finish or fit may occur on some parts without stock photo. The return address support most times is incorrect. The photos provide a product presentation of part being sold...(May 5th, 2018)
• 24711 Gates Fuel Hose Degree 72053981315 (27.4% similar) One per package fuel fill hose - angled. Gates fuel fill hose - angled x deg...(September 18th, 2018)