MOTORAD SX-X6TB Fuel Tank Gas Cap Diplomat Storage Air Jw

( Brand: Motorad ), ( Manufacturer Part Number: SX-X6TB ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.000 ), ( Item Length: 3.250 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C325 12-38 ), ( Compatible Model: Diplomat ), ( Compatible Year: 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Motorad Fuel Tank Cap )

Review MOTORAD Fuel Tank Cap Dodge Diplomat Gas Delivery Storage Air Jw fits 1980–1989

The **Motorad SX-X6TB Fuel Tank Cap** is a meticulously crafted, high-performance replacement for the iconic 1980 1989 Dodge Diplomat, designed to elevate both functionality and aesthetics while ensuring a secure and reliable fit for your vehicle s fuel storage system. Engineered from premium, durable materials, this cap features a robust, corrosion-resistant construction that withstands the elements, preventing leaks, spills, or damage from road debris, moisture, or UV exposure critical for maintaining the integrity of your vehicle s fuel system over time. The cap s sleek, aerodynamic design not only enhances the classic look of your Diplomat but also integrates seamlessly with the original fuel tank s contours, ensuring a tight, airtight seal that minimizes fuel evaporation and reduces emissions. Inside, the cap incorporates a **JW (Jet Valve) mechanism**, a precision-engineered component that allows fuel to flow smoothly while preventing air from entering the tank when the cap is removed, thereby reducing vapor lock and improving engine performance especially beneficial for high-performance or modified vehicles. The cap s **threaded design** is precision-machined to match the exact specifications of the original Dodge Diplomat fuel tank, guaranteeing a snug, vibration-resistant fit that resists loosening over time, even during aggressive driving or off-road use. Additionally, the cap s **clear or tinted polycarbonate lid** (depending on the variant) provides easy visibility of the fuel level without compromising security, while its ergonomic grip ensures effortless installation and removal. Whether you re restoring a classic Diplomat to showroom condition or upgrading your daily driver for enhanced reliability, the Motorad SX-X6TB Fuel Tank Cap delivers a perfect blend of heritage authenticity, modern engineering, and uncompromising durability making it an indispensable accessory for any enthusiast seeking both performance and precision.

### Pros and Cons of buying a Motorad SX-X6TB Fuel Tank Cap for a 1980 1989 Dodge Diplomat

1. **Compatibility** The Motorad SX-X6TB is specifically designed for the 1980 1989 Dodge Diplomat, ensuring a proper fit without modifications. This reduces the risk of leaks or improper sealing that can occur with aftermarket parts that are not tailored to the vehicle s specifications.

2. **Enhanced Fuel Storage** The cap is designed to increase fuel capacity by housing an additional fuel tank (6.1 gallons) inside the existing fuel tank area. This can extend the range of the vehicle, which is particularly useful for off-road or long-distance driving, especially if the vehicle is modified for such purposes.

3. **Durability and Weather Resistance** Motorad products are generally built to withstand harsh conditions, including exposure to fuel, moisture, and temperature fluctuations. The SX-X6TB is likely constructed from materials that resist corrosion and wear, which is critical for long-term reliability.

4. **Ease of Installation** As an aftermarket part designed for this specific application, the installation process should be straightforward compared to custom or DIY solutions. Motorad typically provides clear instructions, and the part is engineered to integrate seamlessly with the vehicle s existing fuel system.

5. **Brand Reputation** Motorad is a well-known brand in the off-road and performance modification community, with a history of producing reliable and high-quality fuel storage solutions. This can provide peace of mind regarding the product s performance and longevity.

6. **Potential for Increased Performance** By adding extra fuel capacity, the SX-X6TB can support longer drives without refueling, which is beneficial for vehicles used for hauling, towing, or extended trips. This can also reduce the frequency of fuel line wear and tear from frequent refueling.

7. **Compatibility with Modifications** If your Dodge Diplomat is part of a larger modification project (e.g., turbocharging, increased power output, or extended range for overlanding), the additional fuel storage can complement these changes without requiring significant adjustments to the vehicle s infrastructure.

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1. **Cost** Aftermarket fuel tank caps like the SX-X6TB are not cheap. The price may be significantly higher than a standard OEM fuel cap, and the cost includes not just the cap itself but also the additional fuel tank and installation labor if you re not doing it yourself. This could be a substantial investment for a vehicle that may not see heavy use.

2. **Installation Complexity** While the SX-X6TB is designed for ease of installation, modifying the fuel system to accommodate the additional tank may require some mechanical skill. If you re not comfortable working with fuel lines, wiring, or the vehicle s electrical system (especially if the cap includes a fuel gauge or other electronics), you may need to hire a professional, adding to the cost.

3. **Potential for Leaks or Reliability Issues** Any aftermarket modification carries a risk of leaks, especially in the fuel system. The additional tank and cap must be properly sealed to avoid fuel spills, which can be hazardous and damage the vehicle. Poor-quality installation or materials could lead to long-term issues.

4. **Weight Addition** Adding an extra 6.1 gallons of fuel increases the vehicle s overall weight. While this may not be significant for most Dodge Diplomats, it could affect fuel efficiency, handling, or suspension performance, particularly if the vehicle is already heavily modified or used for towing.

5. **Maintenance Requirements** The additional fuel tank will require regular maintenance, such as checking for leaks, ensuring the fuel lines are clear, and monitoring fuel quality. Over time, sediment or water in the additional tank could cause issues if not addressed, potentially leading to clogged fuel lines or engine problems.

6. **Limited Use Case** If your primary use for the Dodge Diplomat is casual driving or short trips, the additional fuel capacity may not be necessary. The cost and complexity of the modification might not justify the benefits for low-mileage or urban use.

7. **Compatibility with Aftermarket Fuel Systems** If your vehicle has aftermarket fuel pumps, injectors, or other modifications, the SX-X6TB may need to be integrated carefully to avoid conflicts. For example, the additional fuel capacity could require adjustments to the fuel management system to prevent overfueling or other issues.

8. **Resale Value Impact** Modifications like this can reduce the resale value of the vehicle, especially if potential buyers are not interested in off-road or extended-range applications. The market for modified Diplomats is niche, and not all buyers will see value in the additional fuel storage.

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The Motorad SX-X6TB fuel tank cap is a well-designed solution for Dodge Diplomats from 1980 1989 that require increased fuel capacity, particularly for off-road, overlanding, or high-mileage applications. Its pros such as compatibility, durability, and the potential to enhance the vehicle s range make it a strong choice for enthusiasts who prioritize functionality and performance. However, the cons, including the high cost, installation complexity, and maintenance requirements, mean that this modification is not suitable for everyone.

The decision to purchase the SX-X6TB depends largely on your intended use for the vehicle. If you frequently drive long distances, use the Diplomat for work or adventure, or plan to integrate it into a larger modification project, the benefits may outweigh the drawbacks. Conversely, if the vehicle is primarily used for daily commuting or short trips, the investment may not be justified.

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- You need extended fuel range for off-road, overlanding, or long-distance driving.

- You are comfortable with mechanical work or can afford professional installation.

- The vehicle is already modified or will be used in applications where fuel capacity is critical.

- You value the reliability and brand reputation of Motorad products.

- Your primary use for the Diplomat is casual or short-distance driving.

- You are on a tight budget and cannot justify the cost of the modification.

- You lack the mechanical skills or tools required for proper installation.

- You plan to sell the vehicle in the near future, as the modification may deter potential buyers.

For those on the fence, consider starting with a smaller modification or testing the vehicle s fuel needs before committing to a full fuel tank upgrade. Alternatively, explore alternative solutions such as larger OEM-style fuel tanks or external jerry cans if the SX-X6TB does not fit your needs or budget.

Details:

MotoRad Fuel Tank Cap for 1980 - 1989 Dodge Diplomat Gas Delivery storage Air jw: Status: In Stock.

part #: sxx6tb prices

• $23.30-$29.52

specifications fueltanksysteme:

• for makes: Dodge
• for years: 1980-1989
• brand: Motorad
• mpn: Sx-x6tb
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.000
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C325 12-38
• compatible model: Diplomat
• compatible year: 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Motorad Fuel Tank Cap

payments fueltanksysteme:

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

shipping fueltanksysteme:

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

offer fueltanksysteme:

• availability: In Stock
• options: Ship-to-home
• started: February 28, 2026
• sold: 0
• quantity: 10

returns fueltanksysteme:

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

seller fueltanksysteme:

• city: Indianapolis, Indiana
• rating: 99.5%
• # reviews: 627277

general fueltanksysteme:

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

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