HARLEY-DAVIDSON 99670-04 Willie Skull Medallion Fuel Gas Cap

( Brand: Harley-davidson ), ( Manufacturer Part Number: 99670-04 ), ( Part Type: Fuel Cap )

Review HARLEY DAVIDSON Willieskull Medallion Gas Fuel Cap

The **Harley-Davidson 99670-04 Willie Skull Medallion Gas Fuel Cap** is a striking and iconic accessory designed to elevate the visual presence of any Harley-Davidson motorcycle, particularly those built between the late 1990s and early 2000s. Crafted with Harley-Davidson s signature attention to detail, this fuel cap is not merely a functional component but a bold statement piece that pays homage to the legendary Willie G. Davidson, the visionary designer and co-founder of Harley-Davidson. The cap features a high-quality, durable zinc die-cast construction, ensuring both longevity and a premium feel when handled. At its center, the cap is adorned with a detailed, raised Willie Skull medallion a recognizable emblem that instantly communicates the motorcycle s heritage and the rider s appreciation for Harley-Davidson s rich history. The medallion itself is meticulously engraved with intricate textures, capturing the essence of Willie G. Davidson s legacy while exuding a rugged, industrial aesthetic that complements the raw power of a Harley. The cap is designed to fit seamlessly onto the fuel tank of compatible Harley-Davidson models, including the Sportster, Softail, and Touring series, providing both a secure seal for fuel and an eye-catching focal point that turns heads on the road. Whether installed on a classic or a modern bike, this fuel cap adds a touch of authenticity and personality, making it a must-have for enthusiasts who seek to honor Harley-Davidson s legacy while showcasing their individual style. With its blend of functionality and iconic design, the Willie Skull Medallion Gas Fuel Cap is more than just an accessory it s a tribute to the spirit of motorcycle craftsmanship that Harley-Davidson embodies.

The Harley-Davidson part number **99670-04 (Willie Skull Medallion Gas Fuel Cap)** is a decorative fuel cap designed to enhance the aesthetic appeal of a Harley-Davidson motorcycle. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Willie Skull Medallion Gas Fuel Cap**

1. **Authentic Harley-Davidson Design**

The Willie Skull Medallion is an iconic symbol of Harley-Davidson, originally introduced in the 1950s as a marketing gimmick to promote the brand. Using an official or high-quality replica adds a touch of vintage authenticity to your bike, appealing to enthusiasts who appreciate Harley s heritage.

2. **Enhanced Aesthetic Appeal**

For riders who value customization and personalization, this fuel cap serves as a stylish upgrade. It stands out compared to standard fuel caps, making the bike more visually distinctive, especially if paired with other Willie Skull-themed accessories (e.g., seat covers, saddlebags).

3. **Quality Materials (If Authentic or Well-Made)**

Harley-Davidson s original parts are crafted from durable materials, ensuring longevity and resistance to wear. Even aftermarket replicas of high quality can maintain a polished look for years with proper care.

4. **Resale Value Boost**

If you plan to sell your bike in the future, certain customizations especially those tied to Harley s legacy can attract buyers who appreciate classic styling. A Willie Skull Medallion cap may appeal to collectors or riders who seek a "complete" Harley look.

5. **Easy Installation**

Replacing a fuel cap is a straightforward process that typically requires no special tools. The cap screws onto the fuel tank in place of the original, making it a low-effort upgrade.

6. **Nostalgia and Brand Loyalty**

For long-time Harley owners or fans of the brand s history, this part carries sentimental value. It can be a way to honor the legacy of Harley-Davidson while keeping the bike s appearance true to its roots.

7. **Compatibility with Other Willie Skull Accessories**

If you own or plan to buy other Willie Skull-themed parts (e.g., seat covers, tank bags, or decals), this fuel cap integrates seamlessly, creating a cohesive and cohesive look.

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### **Cons of buying a Willie Skull Medallion Gas Fuel Cap**

1. **Potential for Counterfeit Parts**

Harley-Davidson parts, especially iconic ones like the Willie Skull Medallion, are often replicated by third-party manufacturers. While some replicas are high-quality, others may:

- Use inferior materials (e.g., cheap plastic or poorly stamped metal) that degrade quickly.

- Lack the precise fit or finish of an OEM (Original Equipment Manufacturer) part, leading to leaks or a loose fit.

- Have poor paint adhesion, causing chipping or fading over time.

**Solution:** Purchase from authorized Harley-Davidson dealers or reputable aftermarket suppliers (e.g., Harley-Davidson s official website, eBay with seller verification, or trusted bike shops).

2. **Cost Relative to Functionality**

The primary purpose of a fuel cap is functional sealing the fuel tank to prevent spills and leaks. The Willie Skull Medallion cap serves no additional practical benefit beyond aesthetics. For riders who prioritize form over function, this may feel like an unnecessary expense, especially if they already have a well-fitted, high-quality standard cap.

3. **Maintenance and Care Requirements**

- Scratch or dent more easily, especially in outdoor or rugged environments.

- Require polishing to maintain its shine, adding to long-term maintenance costs.

- Attract fingerprints or dirt more visibly than a matte or textured cap.

4. **Limited Practical Use**

Unlike other customizations (e.g., exhaust pipes, suspension upgrades), the fuel cap s role is purely cosmetic. If you re not particularly fond of the Willie Skull design or prefer a more modern look, this upgrade may not align with your taste.

5. **Potential for Theft or Tampering**

While rare, decorative parts like the Willie Skull Medallion can sometimes attract thieves who target custom or high-value components. Unlike a standard cap, a distinctive one may be more noticeable to opportunistic thieves.

6. **Incompatibility with Non-Harley Modifications**

If you ve modified your bike s fuel system (e.g., swapped to a different tank or fuel line setup), the Willie Skull cap may not fit properly. Always verify compatibility with your specific bike model and modifications.

7. **Overkill for Everyday Riding**

For riders who prioritize practicality over aesthetics, spending money on a decorative cap may feel like an indulgence. If your bike is primarily used for commuting or utilitarian riding, the benefit may not justify the cost.

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### **Conclusion**

The Harley-Davidson Willie Skull Medallion Gas Fuel Cap is a **highly desirable aesthetic upgrade** for riders who appreciate Harley s heritage, enjoy customization, or seek to enhance their bike s vintage appeal. It offers a unique visual statement and can increase the bike s resale value among collectors. However, it is **not a functional upgrade** and may require careful sourcing to avoid counterfeit parts or additional maintenance.

- **Buy it if:** You love the Willie Skull design, want to personalize your bike, and are willing to invest in high-quality parts from a trusted source.

- **Skip it if:** You prioritize practicality over aesthetics, have a tight budget, or prefer a more modern or minimalist look.

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### **Recommendation**

Purchase the cap from an **authorized Harley-Davidson dealer** or a well-reviewed aftermarket supplier (e.g., Harley-Davidson s official store, reputable online retailers with customer feedback). Avoid suspiciously cheap deals, as they often indicate counterfeit goods.

Ensure your bike model (or any fuel system modifications) is compatible with the cap. Harley-Davidson s official parts are designed to fit their motorcycles, but aftermarket replicas may vary.

- A **Willie Skull-themed seat cover or tank bag** (which offer more visible impact).

- A **custom decal or paint job** featuring the Willie Skull logo.

- A **high-quality aftermarket fuel cap** with a similar design but better durability (e.g., from brands like **Razor Edge or Screamin Eagle**).

If you do buy the cap, clean it regularly with a microfiber cloth and mild soap to prevent scratches or tarnishing. For chrome or metal caps, use a **chrome polish** to keep it looking new.

Expect to pay **$50 $150** for an authentic or high-quality replica. If you re on a tight budget, prioritize other customizations that offer more tangible benefits (e.g., suspension upgrades, lighting kits).

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For Harley purists and customization enthusiasts, the Willie Skull Medallion Gas Fuel Cap is a **worthwhile investment** that adds character to the bike. For riders who value practicality or have a limited budget, it may be better to allocate funds elsewhere. Always prioritize quality and authenticity to ensure you re getting a product that lasts.

Details:

Does not fit model's equipped with Original Equipment locking or tethered fuel caps. Use on 13 14 FXSBSE, '21-22 FLHXSE and FLTRXSE requires removal of stock flush mount trim ring. Fits 92-later XL, 92 17 DNA except 04-later FXD and FXDX, 05 06 FXDC 07 FXDSE, 00-later Softail, FXSTD FXSTSSE 94-later Road King, '21-later FLHXS FLTRXS, '22-later FLHXST FLTRXST 15-later Freewheeled model's. SHIPPING IS FOR LOWER 48 STATES.

> GSR veers 1680 GS 9.8.3 1680 NOTE: many Harley electrical and audio components require dealer software to flash marry your bike.

part #: 9967004 prices

• $24.56-$69.52

specifications cyclevintagee:

• for makes: Harley
• brand: Harley-davidson
• mpn: 99670-04
• part type: Fuel Cap

payments cyclevintagee:

• wallet: Paypal
• other
• credit card: Visa

offer cyclevintagee:

• availability: In Stock
• quantity: 1
• best offers: True
• options: Ship-to-home
• sold: 0
• started: April 13, 2026

seller cyclevintagee:

• # reviews: 27454
• rating: 100.0%
• city: Arizona

returns cyclevintagee:

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

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

shipping cyclevintagee:

• carrier: USPS
• class: Standard
• type: Fixed
• transit: 3-7 Days
• cost: $0.00
• service: USPS Ground Advantage

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