GATES SX-3342 Fuel Tank Cap Riviera Tu 3.8L 4.1L 5.0L 5.7L 6.6L

( Brand: Gates ), ( Manufacturer Part Number: SX-3342 ), ( 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: C276 46-32 ), ( Compatible Model: Riviera ), ( Compatible Year: 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Buick Riviera 3.8l 4.1l 5.0l 5.7l 6.6l Tu fits 1975–1997

The **Gates SX-3342 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the iconic 1975 through 1997 Buick Riviera models equipped with a range of powerful V8 engines, including the legendary 3.8L V6, the robust 4.1L V8, and the high-output 5.0L, 5.7L, and 6.6L big-block powerplants. Crafted from premium materials, this fuel tank cap combines durability with precision engineering to ensure a secure, leak-free seal while maintaining optimal fuel vapor control. The cap features a robust, corrosion-resistant construction, featuring a sturdy metal housing and a high-quality rubber gasket that resists degradation from fuel vapors, moisture, and temperature fluctuations, even under the demanding conditions of high-performance driving. Its ergonomic design allows for easy installation and removal, with a smooth, contoured shape that fits seamlessly into the Riviera s sleek bodywork, preserving both aesthetics and functionality. The cap is equipped with a reliable spring-loaded mechanism that ensures a tight, consistent seal every time, preventing fuel fumes from escaping while also protecting the fuel system from contaminants. Whether you're restoring a classic Riviera to its original glory or upgrading a modernized muscle car, the Gates SX-3342 is the perfect blend of heritage and performance, delivering the reliability and precision you expect from a brand synonymous with automotive excellence. Built to meet or exceed OEM specifications, this cap is an essential component for maintaining the integrity of your fuel system, ensuring optimal engine performance and longevity.

### Pros and Cons of buying a Gates SX-3342 Fuel Tank Cap for 1975 1997 Buick Riviera (3.8L 6.6L)

1. **OEM Fitment and Compatibility** The Gates SX-3342 is designed specifically for the 1975 1997 Buick Riviera with the listed engine sizes (3.8L, 4.1L, 5.0L, 5.7L, and 6.6L). This ensures a proper seal and alignment with the fuel tank, reducing the risk of leaks or improper installation.

2. **High-Quality Materials** Gates is a reputable brand known for durable, corrosion-resistant components. The fuel cap is likely made from sturdy plastic or metal with reinforced sealing mechanisms, which helps prevent fuel evaporation and contamination.

3. **Prevents Fuel Evaporation and Vapor Loss** A properly sealed fuel cap reduces fuel vapor loss, improving fuel efficiency and maintaining optimal fuel pressure in the tank. This is particularly useful in older vehicles where fuel system integrity may degrade over time.

4. **Prevents Contamination** A secure fuel cap keeps debris, moisture, and dirt out of the fuel tank, protecting the fuel system from clogs and corrosion.

5. **Easy Installation** The design is straightforward, and many users report that it fits without modification, making it a convenient replacement for a worn or missing cap.

6. **Widely Available and Affordable** As an aftermarket part, it is generally inexpensive compared to OEM replacements, and it can be found at most auto parts stores or online retailers.

7. **Compatibility with Modern Fuel Systems** Even in older vehicles, a modern fuel cap can help with emissions systems that rely on proper fuel tank pressure regulation.

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1. **Potential Incompatibility with Aftermarket Modifications** If the vehicle has been modified (e.g., with a larger fuel tank or custom fuel system), the Gates SX-3342 may not fit perfectly or could interfere with other components.

2. **Durability Concerns Over Time** While Gates parts are generally reliable, plastic fuel caps can degrade due to UV exposure, heat, or fuel additives over many years. If the vehicle is frequently driven in harsh conditions, the cap may wear out sooner than expected.

3. **No Significant Performance Upgrade** Unlike high-flow fuel caps designed for performance vehicles, this part is primarily a functional replacement. It won t improve engine performance or fuel economy beyond what a properly sealed OEM cap would provide.

4. **Possible Misalignment with Fuel Filler Neck** In some cases, the fuel filler neck or surrounding area may have been modified or damaged, leading to a poor fit. A visual inspection of the filler neck is recommended before purchasing.

5. **Limited Brand-Specific Warranty** While Gates offers warranties, they may not cover all types of failure (e.g., damage from improper installation or environmental factors). Always check the warranty terms before buying.

6. **Potential for Counterfeit Parts** Purchasing from untrusted sellers (especially online marketplaces) could result in a counterfeit or low-quality replica that fails prematurely.

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The Gates SX-3342 fuel tank cap is a **solid, reliable choice** for replacing a worn, missing, or damaged fuel cap on a 1975 1997 Buick Riviera with the specified engines. It offers **OEM-level compatibility, durability, and functionality** at a reasonable cost, making it ideal for everyday driving and basic maintenance needs.

However, if the vehicle has **aftermarket modifications, extreme environmental exposure, or signs of fuel system issues**, additional inspection (e.g., checking the fuel filler neck and tank condition) is advisable. In such cases, a **high-quality OEM or performance-grade replacement** (if available) might be preferable.

For most owners looking for a **direct, no-frills replacement**, the Gates SX-3342 is a **recommended purchase** due to its balance of affordability, compatibility, and reliability.

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- You need a straightforward, OEM-compatible replacement.

- The fuel filler neck and surrounding area are intact.

- You want a cost-effective solution without performance upgrades.

- The vehicle has aftermarket modifications that could affect fitment.

- You suspect fuel system leaks or contamination beyond the cap.

- You prefer a brand with extended warranties or performance-focused options.

Always verify the part number and compatibility with your specific Riviera model before purchasing.

Details:

Gates Fuel Tank Cap for 1975 1997 Buick Riviera 3.8L 4.1L 5.0L 5.7L 6.6L tu: Status: In Stock.

part #: sx3342 prices

• $10.83-$29.07

specifications fueltanksysteme:

• for makes: Buick
• for years: 1975-1997
• brand: Gates
• mpn: Sx-3342
• 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: C276 46-32
• compatible model: Riviera
• compatible year: 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

offer fueltanksysteme:

• quantity: 10
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: April 7, 2026

seller fueltanksysteme:

• rating: 99.6%
• # reviews: 642271
• city: Indianapolis, Indiana

payments fueltanksysteme:

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

general fueltanksysteme:

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

returns fueltanksysteme:

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

shipping fueltanksysteme:

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

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