HARLEY DAVIDSON MOBIL-1 Oil Cap Fill Mobil 1-1/4

( Brand: Harley Davidson ), ( Manufacturer Part Number: MOBIL-1 ), ( Type: 1 Vintage Part Small )

Review HARLEY DAVIDSON Mobil Oil Cap 1-1/4 Inch Fill fits SPORTSTER SOFTAIL FXR 1965-99

The **Harley-Davidson Mobil-1 Sportster Softail FXR Oil Cap (1965 99, 1 Fill)** is a meticulously engineered, high-performance replacement oil filler cap designed specifically for Harley-Davidson s legendary Sportster and FXR models produced between 1965 and 1999. Crafted from durable, high-grade die-cast zinc alloy, this oil cap is built to withstand the rigors of daily riding, ensuring a secure and leak-proof seal while maintaining the classic aesthetic of your motorcycle. The cap features a sleek, matte black finish that blends seamlessly with the motorcycle s original design, preserving its vintage charm while delivering modern reliability. Its precise 1 quart fill capacity is perfectly calibrated to meet the oil requirements of the Sportster s iconic 883cc and 1200cc engines, ensuring optimal lubrication without overfilling or underfilling. The cap is equipped with a robust, threaded design that resists loosening under vibration, while its smooth, ergonomic grip allows for easy installation and removal, even with gloved hands. Whether you re cruising down a scenic highway or tackling a winding backroad, this Mobil-1 branded oil cap guarantees a tight, consistent seal, minimizing the risk of oil leaks and maintaining peak engine performance. Backed by the trusted quality of Mobil-1, this replacement part is a must-have for enthusiasts seeking both authenticity and dependability in their Harley-Davidson restoration or maintenance project.

**Pros and Cons of buying a Harley-Davidson Mobil-1 Sportster Softail FXR (1965 99) with 1 Fill Mobil Oil Cap**

### **Pros**

1. **Classic Sportster Design** The FXR is a refined version of the iconic Sportster, blending the simplicity of the original with modern comforts like a softail suspension and ergonomic styling. Its timeless look appeals to enthusiasts who appreciate both heritage and functionality.

2. **Reliability and Durability** Sportsters are known for their robust, air-cooled engines and straightforward mechanical design. The 883cc twin-cylinder engine (in the 1965 99 models) is well-proven, with many examples lasting well over 100,000 miles with proper maintenance. The simplicity of the drivetrain (chain or belt, depending on the year) also makes repairs more accessible than on more complex modern bikes.

3. **Lightweight and Maneuverable** The Sportster s frame is one of the lightest in Harley s lineup, making it highly agile for city riding, parking, and navigating tight spaces. This agility is a major advantage over heavier touring bikes.

4. **Modular and Customizable** The FXR platform is highly modular, allowing for a wide range of aftermarket upgrades. Owners can easily swap out components like exhausts, handlebars, seats, and suspension to tailor the bike to their preferences. The 1 fill oil cap (a later addition) indicates a slightly more refined model, often associated with better maintenance and potential for upgrades.

5. **Strong Secondary Market** Sportsters, especially well-maintained examples, hold their value reasonably well. Parts are widely available, and there s a large community of owners and mechanics familiar with the platform. This makes long-term ownership more feasible.

6. **Comfortable for Longer Rides** The FXR s softail suspension and ergonomics are designed to reduce rider fatigue on extended trips, though it s not as heavily equipped for long-distance touring as a Touring model.

7. **Lower Running Costs** Compared to modern Harley-Davidsons, the FXR s simpler design and lower horsepower mean lower fuel consumption and reduced wear on components. Insurance and maintenance costs are also typically lower than for newer, more powerful bikes.

8. **Nostalgia and Community** Owning a Sportster, especially one from this era, connects riders to Harley s history. The Sportster community is passionate and supportive, offering plenty of resources for troubleshooting, modifications, and riding events.

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### **Cons**

1. **Aging Mechanical Components** Many 1965 99 Sportsters have original engines, transmissions, and frames that are nearing or past their expected lifespan. Rust, worn bearings, and outdated fuel injection (or carburetors in older models) can lead to costly repairs if the bike hasn t been well-maintained.

2. **Fuel Injection Issues (Later Models)** The FXR models from the late 1980s and 1990s introduced electronic fuel injection (EFI), which can be finicky. Throttle body failures, sensor issues, and wiring problems are common, and diagnosing EFI problems often requires specialized knowledge or tools.

3. **Suspension Wear** The softail suspension, while an improvement over the original hardtail, is still prone to wear over time. Shock absorbers, springs, and bushings may need replacement, especially if the bike has seen heavy use or off-road riding.

4. **Exhaust and Emissions Compliance** Older Sportsters may not meet modern emissions standards, particularly if they ve been modified. Some states or countries have restrictions on pre-catalytic bikes, which could limit where you can ride or require retrofitting.

5. **Limited Power and Performance** The 883cc engine in these models is not as powerful as modern Sportster engines (e.g., the 1200cc or 1450cc twins). Acceleration and top speed are modest by today s standards, which may not appeal to riders seeking high performance.

6. **Comfort Limitations** While the FXR is more comfortable than earlier Sportsters, it lacks the advanced ergonomics and wind protection of modern touring models. Long rides at high speeds can still be fatiguing due to the exposed riding position.

7. **Parts Availability and Costs** While parts are widely available, some original components (e.g., specific carburetors, early EFI parts) can be expensive or difficult to source. Rebuilding an engine or transmission may require sourcing vintage parts, adding to costs.

8. **Potential for Hidden Problems** Many older Sportsters have been poorly maintained or modified with incompatible parts. Buyers should be prepared for unexpected repairs, such as seized engines, rusted frames, or worn-out drivetrains. A thorough inspection by a trusted mechanic is essential.

9. **Resale Value Depreciation** Classic Sportsters, while not as depreciated as some other bikes, still lose value over time. If you plan to upgrade later, the resale value may not cover the cost of upgrades or maintenance.

10. **Noise and Vibration** The air-cooled engine and exposed components can be noisy, and the vibration levels are higher than in modern bikes with liquid cooling and anti-vibration mounts. This can be less comfortable for some riders, especially on long trips.

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### **Conclusion**

The Harley-Davidson Mobil-1 Sportster Softail FXR (1965 99) is a fantastic choice for riders who appreciate the classic Sportster s simplicity, reliability, and customization potential. It s ideal for those who prioritize maneuverability, a strong riding community, and lower running costs over raw power or modern amenities. However, buyers should be aware of the potential for aging mechanical issues, EFI quirks, and the need for diligent maintenance. This bike is best suited for riders who enjoy the riding experience, are willing to invest time in upkeep, and don t mind a more traditional approach to motorcycling.

If you re looking for a bike that s easy to ride, fun to modify, and deeply connected to Harley s heritage, the FXR is an excellent pick **provided you choose a well-documented example with a clean service history**. If you prefer modern comforts, higher performance, or plan to ride extensively in urban or high-speed environments, you may want to consider a newer Sportster or a different model.

### **Recommendation**

- **Buy if:** You value the Sportster s legacy, are comfortable with basic mechanical work, and want a bike that s easy to handle and customize. Ensure the bike has a verified service history, no major rust issues, and a functional EFI system (if applicable). Budget for potential repairs, especially if the engine or transmission hasn t been rebuilt.

- **Avoid if:** You expect a bike that requires minimal maintenance, want high performance, or plan to ride in areas with strict emissions regulations. Also, avoid examples with obvious signs of neglect (e.g., seized engines, rusted frames, or missing components).

- **Best Approach:** Purchase from a reputable dealer or private seller with a complete service record. Consider having a mechanic perform a pre-purchase inspection to identify any hidden issues. If you re new to Sportsters, join the Harley-Davidson community (online forums or local clubs) for advice on specific models and common problems.

Details:

Oil cap for 96-99 Harley.

part #: mobil1 prices

• $10.00-$436.74

specifications cyclevintagee:

• for models: Fxr, Sportster, Softail
• for makes: Harley
• for years: 1965-99
• brand: Harley Davidson
• mpn: Mobil-1
• type: 1 Vintage Part Small

returns cyclevintagee:

• policy: No Returns

payments cyclevintagee:

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

seller cyclevintagee:

• rating: 100.0%
• city: North Myrtle Beach, South Carolina
• # reviews: 2

shipping cyclevintagee:

• service: USPS Ground Advantage
• type: Calculated
• transit: 4-10 Days
• carrier: USPS
• cost: $5.62
• class: Standard

general cyclevintagee:

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

offer cyclevintagee:

• started: April 6, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

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