GATES SX-5339 Fuel Tank Cap Comanche Vo 2.1L 2.5L 2.8L 4.0L L6 V6

( Brand: Gates ), ( Manufacturer Part Number: SX-5339 ), ( 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: C482 13-40 ), ( Compatible Model: Comanche ), ( Compatible Year: 1992 1991 1990 1989 1988 1987 1986 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Jeep Comanche 2.1l 2.5l 2.8l 4.0l L4 L6 V6 Vo fits 1986–1992

The **Gates SX-5339 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for the iconic 1986 through 1992 Jeep Comanche, catering to a wide range of engine configurations, including the robust 2.1L inline-four, the versatile 2.5L and 2.8L inline-four engines, the legendary 4.0L inline-six, and the powerful V6 variants. Crafted with precision and built to exacting standards, this fuel tank cap is more than just a functional component it s a critical element that ensures optimal fuel system performance, reliability, and longevity for your Jeep. The cap features a robust, durable construction, utilizing high-quality materials that resist corrosion, warping, and wear, even under the demanding conditions of off-road adventures or daily driving in harsh environments. Its secure, tight-sealing design prevents fuel vapors from escaping, reducing evaporation and maintaining fuel efficiency while also minimizing the risk of fire hazards. The cap is equipped with a reliable, easy-to-use locking mechanism that ensures the lid stays firmly in place during transit, protecting your fuel system from dirt, debris, and moisture. Whether you re navigating rugged terrain or cruising on the highway, this Gates fuel tank cap delivers the durability and performance your Jeep Comanche deserves. Its compatibility with a broad spectrum of engine types ensures that it fits seamlessly across the entire model range, making it an essential upgrade for both restoration projects and routine maintenance. With Gates reputation for quality and innovation, this fuel tank cap is a dependable choice that enhances the functionality and aesthetic appeal of your Jeep, ensuring that every drive is as smooth and efficient as possible.

### Pros and Cons of buying a Gates SX-5339 Fuel Tank Cap for a 1986-1992 Jeep Comanche (2.1L, 2.5L, 2.8L, 4.0L L4, L6, V6)

1. **OEM Fitment and Compatibility** The Gates SX-5339 is designed specifically for the 1986-1992 Jeep Comanche, ensuring a proper fit for all listed engine configurations (2.1L, 2.5L, 2.8L, 4.0L L4, L6, and V6). This reduces the risk of leaks or improper sealing compared to aftermarket alternatives that may not match perfectly.

2. **High-Quality Materials** Gates is a well-known manufacturer of automotive parts, particularly for fuel systems. Their products are typically made from durable materials, including rubber seals and metal components, which are designed to withstand the elements and provide a tight, reliable seal.

3. **Prevents Fuel Evaporation and Vapor Lock** A properly sealed fuel cap helps maintain fuel pressure in the tank, reducing fuel evaporation and preventing vapor lock, which can cause engine stalling or difficulty starting, especially in hot climates or during long periods of inactivity.

4. **Prevents Contamination** A secure fuel cap keeps debris, moisture, and contaminants out of the fuel tank, protecting the fuel system and engine from potential damage.

5. **Easy Installation** The Gates SX-5339 is a direct replacement part, meaning it should install similarly to the original equipment cap. Most users report that it can be installed without specialized tools, though some may require a slight adjustment if the threads are corroded.

6. **Widely Available and Affordable** As an OEM or OEM-equivalent part, the Gates SX-5339 is readily available through auto parts stores, online retailers, and Jeep specialty shops. Pricing is typically reasonable compared to premium aftermarket alternatives.

7. **Compatibility with Fuel Filler Neck** The cap is designed to fit the Jeep Comanche s fuel filler neck without modifications, ensuring a snug and secure connection.

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1. **Potential for Thread Corrosion** Older Jeep Comanche fuel filler necks may have corroded threads due to exposure to fuel, moisture, or road debris. If the threads are stripped or damaged, the new cap may not seal properly, leading to leaks or difficulty tightening.

2. **Stiff or Stuck Seals** Over time, the rubber seal on the original cap (or even the new Gates cap) can become brittle or stuck to the filler neck. This can make installation difficult, requiring lubrication (like silicone spray) or careful prying to avoid damaging the seal.

3. **No Pressure Relief Valve (PRV) in Some Models** The Gates SX-5339 is a standard fuel cap and does not include a pressure relief valve, which some modern or high-performance applications may require. However, for stock or lightly modified Comanches, this is unlikely to be an issue.

4. **Limited Customization** If you re looking for a fuel cap with additional features (e.g., a built-in fuel gauge sender, a more robust seal, or a decorative design), the Gates SX-5339 is a basic replacement part and does not offer those options.

5. **Possible Misalignment During Installation** If the fuel filler neck is bent or misaligned, the cap may not seat correctly, leading to leaks. This is more of a pre-existing issue with the vehicle than a flaw with the cap itself.

6. **No Warranty on Installation Issues** While Gates offers a warranty on manufacturing defects, it does not cover installation-related problems (e.g., improper sealing due to damaged threads or filler neck issues). Users must ensure the filler neck is in good condition before installation.

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The Gates SX-5339 fuel tank cap is a solid choice for restoring or maintaining fuel system integrity in a 1986-1992 Jeep Comanche across all listed engine types. Its OEM fitment, durability, and affordability make it a practical replacement for a worn or missing original cap. However, potential buyers should inspect the fuel filler neck for corrosion or damage before installation, as these issues can compromise the cap s effectiveness. If the filler neck is severely corroded or bent, additional repairs may be necessary.

For most stock or lightly modified Comanches, the Gates SX-5339 provides a reliable, no-frills solution to prevent fuel leaks, evaporation, and contamination. It is a recommended purchase for those seeking a direct replacement with minimal hassle.

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- You need a straightforward, OEM-compatible replacement for a leaking or missing fuel cap.

- The fuel filler neck is in good condition (no severe corrosion or bending).

- You prioritize durability and ease of installation over additional features.

- The fuel filler neck is corroded or damaged address these issues first (e.g., cleaning threads, replacing the filler neck if necessary).

- You re modifying the vehicle for high-performance use and need a cap with a pressure relief valve (though this is unlikely to be required for stock applications).

- You want a more premium or decorative cap (though functionality should remain the top priority for fuel system health).

Details:

Gates Fuel Tank Cap for 1986 - 1992 Jeep Comanche 2.1L 2.5L 2.8L 4.0L L4 L6 V6 vo: Status: In Stock.

part #: sx5339 prices

• $8.01-$26.51

specifications fueltanksysteme:

• for makes: Jeep
• for years: 1986-1992
• brand: Gates
• mpn: Sx-5339
• 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: C482 13-40
• compatible model: Comanche
• compatible year: 1992 1991 1990 1989 1988 1987 1986
• 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

returns fueltanksysteme:

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

payments fueltanksysteme:

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

shipping fueltanksysteme:

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

offer fueltanksysteme:

• sold: 0
• availability: In Stock
• started: April 8, 2026
• quantity: 10
• options: Ship-to-home

seller fueltanksysteme:

• rating: 99.6%
• city: Indianapolis, Indiana
• # reviews: 642688

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