GATES SX-3346 Fuel Tank Gas Cap Riviera Storage Kf 5.7L V8

( Brand: Gates ), ( Manufacturer Part Number: SX-3346 ), ( 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: C286 27-55 ), ( Compatible Model: Riviera ), ( Compatible Year: 1985 1984 1983 1982 1981 ), ( 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 5.7l V8 Gas Delivery Storage Kf fits 1981–1985

The **Gates SX-3346 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the **1981 1985 Buick Riviera** equipped with the **5.7L V8 (L30) gasoline engine**, ensuring a secure and reliable seal for your fuel system. Crafted from durable **high-density polyethylene (HDPE)**, this cap is built to withstand the rigors of daily driving, preventing fuel vapors from escaping while maintaining optimal pressure within the fuel tank. The **knurled, ergonomic grip** ensures easy installation and removal, even in tight spaces, while the **precision-molded rubber gasket** provides an airtight seal to minimize evaporation and fuel loss, contributing to better fuel efficiency and reduced emissions. Unlike generic aftermarket alternatives, the Gates SX-3346 is **OEM-compatible**, meaning it fits seamlessly with the original fuel tank assembly, including the **KF-style venting system**, ensuring proper airflow and pressure regulation. Its **corrosion-resistant design** protects against moisture and road debris, extending the lifespan of your fuel system components. Whether you're restoring a classic Riviera or maintaining a well-loved classic, this cap delivers the **durability, performance, and reliability** expected from Gates, a brand synonymous with automotive excellence.

**Pros and Cons of buying a Gates SX-3346 Fuel Tank Cap for a 1981-1985 Buick Riviera 5.7L V8**

1. **Compatibility and Fit:** This cap is specifically designed for the 1981-1985 Buick Riviera with a 5.7L V8 engine, ensuring a proper fit and alignment with the fuel tank s venting system. Gates products are engineered to match OEM specifications, reducing the risk of leaks or improper sealing.

2. **Durability and Quality:** Gates is a reputable manufacturer known for producing high-quality automotive parts. The SX-3346 cap is made from durable materials, including a sturdy plastic body and a reliable sealing mechanism, which helps prevent fuel evaporation and maintains fuel system integrity over time.

3. **Fuel Economy and Emissions Compliance:** A properly functioning fuel cap ensures the fuel tank venting system operates correctly. This helps maintain optimal fuel pressure, improving fuel economy and ensuring the vehicle meets emissions standards. A faulty or missing cap can trigger a check engine light due to improper venting.

4. **Easy Installation:** The Gates cap is designed for straightforward installation, typically requiring no special tools beyond a basic socket set or wrench. The threaded design matches the OEM cap, making it a plug-and-play replacement.

5. **Availability and Support:** Gates parts are widely available through automotive retailers, online marketplaces, and specialty stores. Additionally, Gates offers customer support and warranties, providing peace of mind in case of defects or issues.

6. **Compatibility with KF Fuel System:** The cap is designed to work with the KF (Kettering Fuel Injection) system used in your Buick Riviera, ensuring compatibility with the vehicle s fuel pressure and venting requirements.

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1. **Cost:** Aftermarket parts like the Gates cap may be slightly more expensive than generic or no-name replacements. However, the premium is often justified by the quality and reliability of Gates products. Pricing can vary depending on the retailer, but it is generally reasonable for a high-quality part.

2. **Potential for Counterfeit Products:** When purchasing aftermarket parts online, there is a risk of receiving counterfeit or low-quality replicas, especially from unverified sellers. Always buy from trusted retailers or authorized dealers to avoid this issue.

3. **Mismatched Styling (Minor Concern):** While the Gates cap is functionally identical to the OEM, some buyers may notice slight differences in appearance compared to the original cap. However, this is rarely a significant issue unless aesthetics are a primary concern.

4. **Installation Challenges:** In rare cases, the fuel tank cap may be difficult to remove or install if the threads are corroded or damaged. This is not specific to the Gates cap but can be a general issue with older vehicles. A thread lubricant or careful handling may be necessary.

5. **Limited Customization:** If you are looking for a cap with unique styling or additional features (e.g., LED lights, custom colors), the Gates SX-3346 is a standard replacement and does not offer such customization options.

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The Gates SX-3346 fuel tank cap is an excellent choice for your 1981-1985 Buick Riviera 5.7L V8. Its compatibility, durability, and reliability make it a superior alternative to OEM or generic replacements. While there are minor considerations like cost and potential counterfeit risks, these are outweighed by the benefits of using a high-quality, well-supported part. The cap ensures proper fuel system function, improves fuel economy, and helps avoid emissions-related issues.

Purchase the Gates SX-3346 fuel tank cap from a reputable retailer, such as an authorized Gates dealer, a trusted online marketplace (e.g., Amazon, RockAuto, or a dealership parts department), or a local automotive parts store. Verify the seller s authenticity to avoid counterfeit products. If you encounter any installation difficulties, consult a mechanic or use penetrating oil to loosen corroded threads. Overall, this is a recommended upgrade for your Buick Riviera.

Details:

Gates Fuel Tank Cap for 1981 - 1985 Buick Riviera 5.7L V8 Gas Delivery storage kf: Status: In Stock.

part #: sx3346 prices

• $16.79-$33.81

specifications fueltanksysteme:

• for makes: Buick
• for years: 1981-1985
• brand: Gates
• mpn: Sx-3346
• 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: C286 27-55
• compatible model: Riviera
• compatible year: 1985 1984 1983 1982 1981
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

shipping fueltanksysteme:

• type: Fixed
• transit: 3-7 Days
• cost: $0.00
• class: Standard, Expedited
• service: Standard, Expedited

offer fueltanksysteme:

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

returns fueltanksysteme:

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

payments fueltanksysteme:

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

general fueltanksysteme:

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

seller fueltanksysteme:

• rating: 99.6%
• city: Indianapolis, Indiana
• # reviews: 655585

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