GATES SX-6790 Fuel Tank Cap Ventura 2.5L 3.8L 4.1L 4.3L 4.9L

( Brand: Gates ), ( Manufacturer Part Number: SX-6790 ), ( 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: C574 72-57 ), ( Compatible Model: Ventura ), ( Compatible Year: 1977 1976 1975 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Pontiac Ventura 2.5l 3.8l 4.1l 4.3l 4.9l To fits 1975–1977

The **Gates SX-6790 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the classic **1975 1977 Pontiac Ventura** models equipped with a range of powerful engines, including the **2.5L (L26) inline-four, the 3.8L (350) V8, the 4.1L (301) V8, the 4.3L (305) V8, and the legendary 4.9L (350) V8 (L78, L48, or L28). Crafted from durable, corrosion-resistant materials, this fuel cap is built to withstand the demands of both daily driving and spirited performance, ensuring a secure, leak-free seal while maintaining the aesthetic integrity of your vehicle s fuel system. The cap features a **precision-machined rubber gasket** that provides an airtight fit, preventing fuel vapors from escaping and reducing the risk of evaporative emissions, which is particularly important for maintaining compliance with emissions standards while preserving the original look of your classic Pontiac. Its **chrome-plated metal body** not only enhances the visual appeal but also offers superior durability against the elements, including road salt, UV exposure, and general wear, ensuring long-term reliability. The cap s **threaded design** is engineered to match the exact specifications of the original equipment manufacturer (OEM), guaranteeing a perfect fit without the need for modification or adapters. Whether you re restoring a showroom-quality Ventura or simply maintaining a well-loved daily driver, the Gates SX-6790 is the ideal choice for those who demand both performance and authenticity. Its **universal compatibility** across multiple engine displacements ensures that it seamlessly integrates into your vehicle s fuel system, while its **high-quality construction** guarantees that it will perform as reliably as the day it was installed. Upgrade your Pontiac s fuel system with this premium Gates cap and enjoy the confidence of knowing that your classic is equipped with a part that balances functionality, durability, and heritage.

**Pros and Cons of buying a Gates SX-6790 Fuel Tank Cap for 1975 1977 Pontiac Ventura (2.5L 4.9L Engines)**

1. **OEM Fitment and Compatibility** The Gates SX-6790 is designed as a direct replacement for the original Pontiac fuel tank cap on the specified models and engines. This ensures proper sealing, alignment, and functionality without modifications.

2. **High-Quality Materials** Gates is a reputable brand known for durable, corrosion-resistant components. The cap is likely made from metal or reinforced plastic, which helps prevent leaks and deterioration over time.

3. **Proper Venting System** The cap includes a venting mechanism that maintains fuel tank pressure, reducing vapor buildup and preventing fuel evaporation. This is crucial for engine performance and emissions compliance.

4. **Easy Installation** As an aftermarket replacement part, it should be straightforward to install, requiring only basic tools. No special equipment or expertise is typically needed.

5. **Prevents Fuel Odors and Contamination** A properly sealed cap prevents fuel fumes from escaping, reducing odors in the vehicle and minimizing the risk of contamination from debris or moisture.

6. **Long-Term Reliability** Gates parts are generally built to last, reducing the likelihood of frequent replacements due to failure.

7. **Cost-Effective Solution** Compared to potential repair costs from a leaking or damaged original cap, this is a relatively inexpensive fix.

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1. **Potential Mismatch with Original Design** While Gates aims for OEM compatibility, slight variations in threading, venting, or sealing surfaces could occur. If the original cap was slightly modified or damaged, the new one may not fit perfectly.

2. **Aftermarket vs. OEM Quality Concerns** Some owners prefer genuine OEM parts for absolute certainty in fitment and longevity. While Gates is reliable, there s a minor risk of quality inconsistencies compared to a factory cap.

3. **Availability of Original Part** If the original cap is still functional, replacing it unnecessarily may not be justified. Testing the existing cap for leaks or wear is advisable before purchasing.

4. **Price Relative to Original** If the original cap is still in good condition and readily available (e.g., from a junkyard), the Gates part may not offer significant cost savings.

5. **Installation Risks** If the fuel tank or surrounding area is corroded or damaged, improper installation could lead to leaks. A thorough inspection of the tank and cap area is recommended.

6. **Limited Customization** Unlike some aftermarket caps with additional features (e.g., fuel filler neck upgrades), the Gates SX-6790 is a basic replacement part with no extra functionalities.

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The Gates SX-6790 fuel tank cap is a **strong, reliable choice** for replacing a worn or missing cap on your 1975 1977 Pontiac Ventura, regardless of engine size. Its OEM fitment, durability, and proper venting make it a practical solution for preventing leaks, fuel odors, and potential engine issues. However, it s essential to first verify whether the original cap is still functional or if the tank itself requires inspection for corrosion or damage.

If the original cap is damaged, missing, or leaking, the Gates part is an excellent aftermarket alternative that balances quality and affordability. For owners who prioritize OEM precision, a junkyard original cap may be preferable, but Gates offers a dependable substitute with minimal drawbacks.

- Your original cap is cracked, missing, or leaking.

- You want a high-quality, long-lasting replacement without risking compatibility issues.

- You re performing routine maintenance and want to ensure proper fuel system sealing.

- The original cap is still intact and functional.

- You have access to a genuine OEM cap in excellent condition.

- The fuel tank or filler neck shows significant corrosion, which may require additional repairs.

- Inspect the fuel tank and filler neck for rust, cracks, or damage.

- Clean the area around the cap mounting to ensure a tight seal.

- Follow the installation instructions carefully to avoid cross-threading.

For most cases, the Gates SX-6790 is a **recommended upgrade** that enhances reliability without complications.

Details:

Gates Fuel Tank Cap for 1975-1977 Pontiac Ventura 2.5L 3.8L 4.1L 4.3L 4.9L to: Status: In Stock.

part #: sx6790 prices

• $22.80-$28.34

specifications fueltanksysteme:

• for makes: Pontiac
• for years: 1975-1977
• brand: Gates
• mpn: Sx-6790
• 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: C574 72-57
• compatible model: Ventura
• compatible year: 1977 1976 1975
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

returns fueltanksysteme:

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

general fueltanksysteme:

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

seller fueltanksysteme:

• rating: 99.6%
• city: Indianapolis, Indiana
• # reviews: 644144

offer fueltanksysteme:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: April 11, 2026
• quantity: 10

payments fueltanksysteme:

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

shipping fueltanksysteme:

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

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