MOTORAD C639 Fuel Tank Gas Cap Storage Air Nf 9-22

( Brand: Motorad ), ( Compatible Year: 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Motorad Fuel Tank Cap ), ( Type: Fuel Tank Cap ), ( Item Width: 3.000 ), ( Item Length: 3.250 ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C639 9-22 )

Review MOTORAD 9-22 Fuel Tank Cap Subaru Gas Delivery Storage Air Nf fits FORESTER 1998–2018

The **Motorad C639 9-22 Fuel Tank Cap** is a meticulously engineered, high-performance replacement part designed specifically for Subaru Forester models manufactured between 1998 and 2018. Crafted with precision and built to exceed OEM standards, this fuel tank cap is engineered to ensure a secure, airtight seal while maintaining optimal fuel vapor control, which is critical for both performance and emissions compliance. The cap features a robust, durable construction with a sturdy metal housing and a high-quality rubber gasket that resists degradation from fuel vapors, UV exposure, and temperature fluctuations, ensuring long-lasting reliability even in demanding driving conditions. Its unique **9-22 design** incorporates a specialized venting system that balances air intake and vapor release, preventing pressure buildup in the fuel tank while minimizing fuel evaporation a key factor in reducing emissions and improving fuel efficiency. The cap s ergonomic grip and precise fitment make installation straightforward, even for DIY enthusiasts, while its compatibility with a wide range of Subaru Forester trims ensures seamless integration without the need for modifications. Whether you're restoring a classic Forester or maintaining a modern model, this fuel tank cap delivers the performance, durability, and environmental responsibility expected from a premium aftermarket solution.

**Pros and Cons of buying a Motorad C639 9-22 Fuel Tank Cap for 1998-2018 Subaru Forester**

1. **Compatibility** The cap is specifically designed for the 1998-2018 Subaru Forester, ensuring a proper fit without modifications. This reduces the risk of leaks or improper sealing, which could lead to fuel evaporation or contamination.

2. **Enhanced Fuel Storage** The cap includes an integrated **air/nitrogen storage system**, which helps maintain fuel freshness by reducing oxygen exposure. This can prevent fuel degradation, gumming, and varnish buildup in the fuel system, particularly beneficial in older vehicles where fuel can stagnate.

3. **Durability** Motorad products are generally known for quality construction, using materials that resist corrosion and wear. The cap is likely to last longer than an OEM replacement, especially if exposed to harsh conditions.

4. **Easy Installation** Since it s a direct replacement, installation is straightforward, requiring no additional tools or modifications beyond removing the old cap. This makes it a convenient upgrade for DIYers or mechanics.

5. **Potential Fuel Efficiency Benefits** By minimizing fuel evaporation and maintaining fuel quality, the cap may contribute to slightly better engine performance and fuel economy over time, though the impact will vary depending on driving habits and fuel type.

6. **Protection Against Contamination** The sealed design helps keep debris, moisture, and pests out of the fuel tank, reducing the risk of clogged fuel filters or engine damage.

7. **Compatibility with Additives** If you use fuel stabilizers or additives, the sealed environment ensures they remain effective longer without evaporating.

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1. **Cost** Compared to an OEM fuel cap, this aftermarket part is likely more expensive. While the price reflects added functionality, it may not be justified for drivers who rarely use their vehicle or don t notice fuel quality issues.

2. **Limited Availability** Specialty parts like this may not be stocked at every auto parts store. You may need to order it online, which could involve waiting for shipping or dealing with potential counterfeit sellers.

3. **Mixed Reviews on Effectiveness** Some owners report noticeable improvements in fuel freshness and engine performance, while others see little to no difference. Results can vary based on fuel type, driving habits, and how often the vehicle is used.

4. **Potential Overkill for Low-Mileage Drivers** If you drive frequently (e.g., daily commuting), fuel turnover is high, and the benefits of the cap may be minimal. The cap s advantages are more apparent in vehicles that sit unused for extended periods.

5. **Installation Risks** While simple, improper installation (e.g., overtightening or cross-threading) could damage the fuel tank or cap threads. This is a low-risk concern but worth noting for inexperienced DIYers.

6. **No Direct Performance Gain** Unlike performance upgrades (e.g., exhaust or suspension), this cap doesn t directly improve horsepower or handling. Its value lies in maintenance and longevity rather than immediate performance.

7. **Warranty Considerations** Some manufacturers or dealerships may void warranties if aftermarket fuel caps are installed, though this is rare for parts like this. Always check your vehicle s warranty terms.

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The **Motorad C639 9-22 fuel tank cap** is a **practical upgrade for Subaru Forester owners** who prioritize fuel longevity, reduced evaporation, and protection against contamination. It s particularly useful for:

- Vehicles used infrequently (e.g., weekend drivers, seasonal use).

- Owners who notice fuel-related issues (e.g., hard starts, clogged injectors).

- Those who store fuel additives or use premium/unleaded fuel.

However, it may not be worth the investment for **frequent drivers** who rarely experience fuel stagnation or contamination problems. The cost is justified if you value long-term fuel system health, but it s not a performance-enhancing part.

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- You drive your Forester less than daily and want to preserve fuel quality.

- You ve experienced fuel-related issues (e.g., clogged filters, hard starts) and suspect stagnant fuel.

- You re open to a small upfront cost for potential long-term benefits.

- You drive your vehicle frequently and rarely leave fuel sitting unused.

- You re on a tight budget and prioritize other maintenance tasks.

- You ve never had fuel system problems and don t use fuel additives.

If you re unsure, test the cap for a few months and monitor whether you notice improvements in engine performance or fuel freshness. For most casual drivers, an OEM replacement may suffice, but for enthusiasts or those with older vehicles, the Motorad cap is a worthwhile investment.

Details:

Parts Numbers. Year Range Make model Notes, 1998 , 1999 , 2000 , 2001 , 2002 , 2003 , 2004 , 2005 , 2006 , 2007 , 2008 , 2014 , 2015 , 2016 , 2017 , 2018 . Part Information. Applications and Compatibility.

specifications fueltanksysteme:

• for models: Forester
• for makes: Subaru
• for years: 1998-2018
• brand: Motorad
• compatible year: 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Motorad Fuel Tank Cap
• type: Fuel Tank Cap
• item width: 3.000
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C639 9-22

shipping fueltanksysteme:

• class: Standard
• transit: 4-8 Days
• service: Standard
• cost: $0.00
• type: Fixed

general fueltanksysteme:

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

returns fueltanksysteme:

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

seller fueltanksysteme:

• # reviews: 6991
• rating: 98.8%
• city: Walnut, California

payments fueltanksysteme:

• other
• credit card: Diners-club
• wallet: Google-pay

offer fueltanksysteme:

• sold: 0
• options: Ship-to-home
• started: March 19, 2026
• best offers: True
• availability: In Stock
• quantity: 2

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