HARLEY-DAVIDSON 61120-37 Flathead Wla Servi Car Tank Top 45 Filler Strip

( Brand: Harley-davidson ), ( Manufacturer Part Number: 61120-37 ), ( Part Type: Tank Filler Strip ), ( Compatible Model: 61120-37, Flathead 45 ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front ), ( Performance Part: No ), ( Country Of Origin: United States )

Review HARLEY DAVIDSON Flathead 45 Wl Wla Servi car Tank Top Filler Strip

The **Harley-Davidson 61120-37 Flathead 45 WLA Servi-Car Tank Top Filler Strip** is a meticulously crafted, high-performance replacement component designed exclusively for the iconic Harley-Davidson 45 V-Twin engines, specifically those found in the legendary **WLA Servi-Car models** from the 1930s. This precision-engineered filler strip serves as a critical component in maintaining the structural integrity and fuel system efficiency of the iconic flathead engine, ensuring a proper seal between the gas tank and the frame while preventing leaks, spills, or contamination. Crafted from durable, corrosion-resistant materials, this filler strip is built to withstand the demands of both classic restorations and high-mileage vintage rides, offering a seamless fit that aligns perfectly with the original design specifications. Its design incorporates a smooth, contoured edge that conforms effortlessly to the contours of the tank top, eliminating gaps that could lead to fuel evaporation or moisture ingress common issues in older Harley-Davidson models. Whether restoring a rare Servi-Car to its original glory or performing routine maintenance on a cherished flathead, this filler strip ensures a reliable, long-lasting solution that upholds the engineering legacy of Harley-Davidson s early engineering prowess. For enthusiasts and mechanics alike, it represents a blend of authenticity and functionality, bridging the gap between vintage craftsmanship and modern reliability.

### **Pros and Cons of buying a Harley-Davidson 61120-37 Flathead 45 WLA Servi-Car Tank Top Filler Strip**

1. **Authentic Fit and Finish** This is an OEM (Original Equipment Manufacturer) or high-quality aftermarket part designed specifically for Harley-Davidson Flathead engines, ensuring a proper fit without gaps or misalignment. This helps maintain the aesthetic integrity of the tank and prevents leaks.

2. **Prevents Fuel Leaks** The tank top filler strip acts as a seal between the tank and the filler neck, preventing fuel from seeping out and reducing the risk of spills or fuel-related fires.

3. **Easy Installation** Designed to be a straightforward replacement, this part is typically a simple snap-on or adhesive installation, making it accessible for DIY mechanics without requiring specialized tools.

4. **Compatibility with Servi-Car Tanks** Since this part is labeled for use with Servi-Car tanks (a common aftermarket tank supplier for Flatheads), it ensures compatibility with modified or restored engines where stock Harley tanks may not fit.

5. **Durability** Harley-Davidson parts are built to withstand the rigors of motorcycle use, including exposure to heat, vibration, and fuel chemicals. A quality filler strip will last as long as the tank itself if properly maintained.

6. **Aesthetic Consistency** If you re restoring or maintaining a vintage Harley, this part helps preserve the original look of the fuel tank, which is important for collectors and enthusiasts who prioritize authenticity.

7. **Reduces Fuel Odor** A properly sealed tank top prevents fuel vapors from escaping, which can improve the riding environment by minimizing fumes inside the cockpit.

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1. **Cost** As an OEM or high-quality aftermarket part, this filler strip may be more expensive than generic or low-quality alternatives. For a vintage motorcycle, the price may be justified, but budget-conscious buyers might seek cheaper options (though risking fit or durability issues).

2. **Limited Availability** Harley-Davidson parts, especially for older models like the Flathead, can be harder to find compared to more modern bikes. You may need to order from specialty suppliers, which could delay repairs or restorations.

3. **Potential for Counterfeit Parts** If purchasing from third-party sellers (e.g., eBay, Facebook Marketplace), there is a risk of receiving a knockoff part that doesn t fit correctly or lasts as long as the genuine article. Always verify the seller s reputation and part authenticity.

4. **Installation Challenges for Non-Mechanics** While the installation is generally simple, improper handling (e.g., stretching the rubber seal, misalignment) could lead to leaks or a poor fit. Those without mechanical experience may struggle.

5. **Wear Over Time** Like all rubber seals, this part can degrade due to age, fuel exposure, or UV radiation. It may need replacement periodically, especially if the tank is frequently used or exposed to harsh conditions.

6. **Compatibility Issues with Modified Tanks** If the Servi-Car tank has been heavily modified (e.g., custom filler necks, drilled holes), the OEM filler strip may not fit perfectly. Custom solutions might be required.

7. **Environmental Factors** Extreme temperatures (freezing or scorching heat) can affect rubber seals, potentially causing them to crack or lose their grip over time. Regular inspection is recommended.

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The **Harley-Davidson 61120-37 Flathead 45 WLA Servi-Car Tank Top Filler Strip** is a **high-quality, reliable part** that offers significant benefits for maintaining fuel tank integrity, preventing leaks, and preserving the authenticity of a vintage Harley-Davidson. Its **authentic fit, durability, and ease of installation** make it a worthwhile investment for serious riders, restorers, and collectors. However, the **higher cost, potential availability issues, and risk of counterfeit parts** are drawbacks that buyers should consider, particularly if they are on a tight budget or lack mechanical experience.

For **most owners of Flathead engines**, especially those restoring or maintaining classic Harleys, the **pros outweigh the cons**, making this part a **recommended purchase** when authenticity and reliability are priorities. If cost is a major concern, buyers should weigh the risks of cheaper alternatives carefully, as a poorly fitted or low-quality strip could lead to fuel leaks, damage to the tank, or even safety hazards.

- You own a Flathead engine with a Servi-Car tank and need an OEM-quality seal.

- You prioritize long-term reliability and fuel safety over cost savings.

- You are comfortable with basic installation or have access to a mechanic for proper fitting.

- You value the aesthetic and functional integrity of your motorcycle s restoration.

- You are working with a heavily modified tank where standard parts may not fit.

- You are on a tight budget and can find a verified high-quality aftermarket equivalent (e.g., from reputable suppliers like **Harley-Davidson Performance Parts, J&P Cycles, or eBay with seller guarantees**).

- You lack confidence in installing it yourself and cannot access professional help.

For the average Flathead owner, **this part is a solid, necessary upgrade** just ensure you purchase it from a trusted source to avoid counterfeit or damaged stock.

Details:

SHIPPING: Shipping charges and quotes include postage handling based on the item weight size.

part #: 6112037 prices

• $42.99-$49.95

specifications cyclevintagee:

• for makes: Harley
• brand: Harley-davidson
• mpn: 61120-37
• part type: Tank Filler Strip
• compatible model: 61120-37, Flathead 45
• vintage part: Yes
• placement on vehicle: Front
• performance part: No
• country of origin: United States

seller cyclevintagee:

• # reviews: 3975
• city: Youngstown, Ohio
• rating: 99.5%

returns cyclevintagee:

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

shipping cyclevintagee:

• service: USPS Ground Advantage
• cost: $7.00
• carrier: USPS
• class: Standard
• type: Fixed
• transit: 3-6 Days

offer cyclevintagee:

• options: Ship-to-home
• quantity: 1
• started: March 8, 2026
• best offers: True
• availability: In Stock
• sold: 0

general cyclevintagee:

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

payments cyclevintagee:

• wallet: Paypal
• credit card: Visa
• other

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