GATES SX-3360 Fuel Tank Cap Supreme Oy 5.7L 7.5L V8

( Brand: Gates ), ( Manufacturer Part Number: SX-3360 ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.630 ), ( Item Height: 3.000 ), ( Manufacturer Warranty: Recommended Service Interval ), ( Ipn: C200 46-17 ), ( Compatible Model: Cutlass Supreme ), ( Compatible Year: 1974 1973 1972 1971 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Oldsmobile Supreme 5.7l 7.5l V8 Oy fits CUTLASS C200 1971–1974

The **Gates SX-3360 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the iconic **1971 1974 Oldsmobile Cutlass Supreme** equipped with the legendary **5.7L (345 ci) or 7.5L (455 ci) V8 engine**, particularly those built for the **Oxygenated Y (OY) fuel system**. Crafted from premium materials, this fuel cap is built to meet or exceed the stringent demands of classic American muscle, ensuring a secure, leak-proof seal while maintaining the original aesthetic and functionality. The cap features a robust, durable **polypropylene construction**, reinforced with precision-molded gaskets that resist degradation from fuel vapors, UV exposure, and temperature fluctuations critical factors for vehicles that may spend extended periods in storage or see occasional use. Its **threaded design** is engineered to match the exact specifications of the Cutlass Supreme s fuel tank, providing a tight, vibration-resistant fit that prevents fuel spillage and vapor leaks, which are particularly problematic in high-performance applications where fuel system integrity is paramount. Beyond its mechanical reliability, the Gates SX-3360 is finished in a **high-quality, matte black coating** that not only enhances the vehicle s classic appearance but also protects against corrosion and wear, ensuring longevity even under harsh environmental conditions. Whether restoring a show-ready Cutlass Supreme or maintaining a daily-driven muscle car, this fuel cap delivers both performance and authenticity, bridging the gap between modern durability and vintage charm.

### Pros and Cons of Buying a Gates SX-3360 Fuel Tank Cap for a 1971-1974 Oldsmobile Cutlass Supreme (5.7L/7.5L V8)

1. **OEM Fitment** The Gates SX-3360 is designed as an exact replacement for the original fuel tank cap on your 1971-1974 Oldsmobile Cutlass Supreme, ensuring a proper seal and preventing fuel vapor leaks.

2. **Durable Construction** Gates is a well-known manufacturer of high-quality automotive parts, and this cap is made from sturdy materials that resist wear, corrosion, and fuel degradation over time.

3. **Seal Integrity** A properly functioning fuel cap maintains proper fuel vapor pressure in the tank, improving fuel efficiency and preventing evaporative emissions (EVAP) system issues, which can trigger check engine lights.

4. **Easy Installation** The cap is a straightforward replacement, requiring no special tools or modifications. It should fit securely without modifications to the tank or surrounding components.

5. **Compatibility with EVAP System** Older vehicles like your Cutlass Supreme rely on a functional fuel cap to keep the EVAP system working correctly, reducing the risk of emissions-related problems.

6. **Prevents Fuel Loss** A failing or missing cap can cause fuel to evaporate, leading to reduced fuel economy and potential running issues.

7. **Cost-Effective Solution** Compared to replacing the entire fuel tank or dealing with EVAP system repairs, a new cap is a minor, inexpensive fix.

1. **Potential Counterfeit Concerns** Some aftermarket parts, including fuel caps, may be counterfeit or low-quality replicas. Ensure you purchase from a reputable seller (e.g., RockAuto, eBay verified sellers, or a trusted auto parts store) to avoid inferior products.

2. **Stiffness or Difficulty Opening/Closing** Some users report that certain Gates caps can be slightly stiff, especially if the threads or rubber seal are dry. Lubricating the threads with a small amount of silicone spray can help.

3. **Limited Availability of Replacement Seals** If the rubber seal inside the cap wears out prematurely, finding an exact replacement may be difficult, though Gates typically provides a durable seal that lasts the life of the cap.

4. **No Additional Features** Unlike some modern fuel caps, this Gates part does not include features like pressure relief valves or advanced sealing technologies, but it is sufficient for its intended application.

5. **Possible Misalignment Risk** If the tank threads are corroded or damaged, the cap may not seat properly, leading to leaks. In such cases, cleaning or replacing the tank threads may be necessary before installation.

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### **Conclusion**

The Gates SX-3360 fuel tank cap is a reliable, OEM-replacement part for your 1971-1974 Oldsmobile Cutlass Supreme. Its primary benefits proper sealing, durability, and compatibility with your vehicle s EVAP system outweigh the minor drawbacks, such as potential stiffness or counterfeit risks. If purchased from a trusted source and installed correctly, it will effectively prevent fuel loss, emissions issues, and check engine lights while maintaining optimal fuel system performance.

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### **Recommendation**

- You are experiencing fuel cap-related issues (e.g., check engine light for EVAP problems, difficulty opening/closing the cap, or visible leaks).

- You want a direct OEM replacement that ensures proper sealing and emissions compliance.

- You plan to perform the replacement yourself, as it is a simple DIY job requiring no specialized tools.

**Avoid purchasing from untrusted sellers** to ensure you receive an authentic Gates product. If the cap is difficult to install due to corroded tank threads, consider cleaning or lightly lubricating the threads before installation. For long-term reliability, store the cap in a dry place when not in use to prevent seal degradation.

This is a cost-effective solution that will likely resolve any fuel cap-related concerns without the need for more extensive repairs.

Details:

Gates Fuel Tank Cap for 1971-1974 Oldsmobile Cutlass Supreme 5.7L 7.5L V8 oy: Status: In Stock.

part #: sx3360 prices

• $17.73-$26.52

specifications fueltanksysteme:

• for models: C200, Cutlass
• for makes: Oldsmobile
• for years: 1971-1974
• brand: Gates
• mpn: Sx-3360
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.630
• item height: 3.000
• manufacturer warranty: Recommended Service Interval
• ipn: C200 46-17
• compatible model: Cutlass Supreme
• compatible year: 1974 1973 1972 1971
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

general fueltanksysteme:

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

offer fueltanksysteme:

• started: March 15, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 10
• sold: 0

payments fueltanksysteme:

• credit card: Mastercard
• other
• wallet: Paypal

shipping fueltanksysteme:

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

seller fueltanksysteme:

• rating: 99.5%
• # reviews: 633076
• city: Indianapolis, Indiana

returns fueltanksysteme:

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

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