HARLEY-DAVIDSON 3555-15 Oil Pump Plunger

( Brand: Harley-davidson ), ( Manufacturer Part Number: 3555-15 ), ( Part Type: Oil Pump ), ( Compatible Model: Jd ), ( Vintage Part: Yes )

Review HARLEY DAVIDSON Oem Jd Oil Pump Plunger

The **Harley-Davidson 3555-15 JD Oil Pump Plunger** is a precision-engineered component designed exclusively for the iconic Harley-Davidson V-Twin engines, specifically tailored to models equipped with the **JD oil pump assembly** a critical part of the lubrication system that ensures optimal oil flow and engine longevity. Crafted from high-grade **steel alloy**, this plunger is forged to exacting tolerances, delivering seamless performance under the demanding conditions of high-revving, high-torque V-Twin powerplants. Its robust construction resists wear and deformation, maintaining consistent oil pressure even during aggressive riding or extended high-load operation, which is essential for preventing premature engine wear and ensuring reliable power delivery. The plunger s design incorporates a **precision-ground surface** and **optimized internal geometry**, allowing it to function efficiently within the oil pump s cam-driven mechanism, where it plays a pivotal role in metering oil from the crankcase to the engine s critical moving parts. Whether installed in a classic Sportster, a muscle-inspired Twin Cam, or a modern Evolution engine, this plunger is a direct-fit replacement for OEM failures or upgrades, offering the same durability and performance as the original equipment. For enthusiasts and mechanics alike, the **3555-15 JD Oil Pump Plunger** represents a vital component for maintaining peak engine health, ensuring smooth operation, and preserving the legendary reliability that Harley-Davidson riders expect from their machines.

### Pros and Cons of Buying a Harley-Davidson 3555-15 J&D Oil Pump Plunger

The Harley-Davidson 3555-15 J&D oil pump plunger is a specialized part designed for Harley-Davidson engines, particularly those with oil pump issues. Here are the key advantages of purchasing this part:

1. **Compatibility and Fit:** This plunger is specifically engineered for Harley-Davidson engines, ensuring a precise fit and proper function. It is designed to replace the stock or worn-out oil pump plunger, reducing the risk of leaks or improper oil circulation.

2. **Performance Improvement:** A failing oil pump plunger can lead to inadequate lubrication, which may cause engine wear, reduced performance, or even catastrophic failure. Replacing it with a high-quality part like the J&D plunger can restore proper oil flow, ensuring the engine runs smoothly and efficiently.

3. **Durability and Quality:** J&D (John Deere & Harley-Davidson) parts are known for their durability and reliability. This plunger is built to withstand the demands of Harley-Davidson engines, offering long-term performance and reducing the likelihood of premature failure.

4. **Ease of Installation:** The part is designed with standard dimensions and mounting points, making it relatively straightforward to install. Many owners and mechanics report that it can be swapped out with minimal tools and effort, especially if the engine is already disassembled for other maintenance tasks.

5. **Cost-Effective Solution:** While it is a specialized part, replacing the plunger is often more cost-effective than overhauling the entire oil pump or dealing with engine damage caused by poor lubrication. It extends the life of the oil pump and prevents more expensive repairs down the line.

6. **Warranty and Support:** J&D parts typically come with warranties, providing peace of mind in case of defects or premature failure. Additionally, J&D offers customer support for installation guidance or troubleshooting.

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1. **Cost:** Like many aftermarket or high-quality replacement parts, the J&D plunger may be more expensive than generic or OEM alternatives. However, the trade-off is often better performance and longevity.

2. **Availability and Lead Time:** Depending on the region, this part may not be readily available at all local motorcycle dealerships or auto parts stores. Purchasing it online may require waiting for shipping, which could delay repairs.

3. **Installation Complexity:** While the installation is generally straightforward, it does require some mechanical skill. If the oil pump itself is damaged or the engine is in poor condition, additional repairs may be necessary, adding complexity and cost to the project.

4. **Mixed Reviews on Longevity:** Some owners report that while the J&D plunger works well initially, it may not last as long as they hoped, especially in high-mileage or heavily modified engines. This can lead to repeat replacements and frustration.

5. **Potential for Counterfeit Parts:** When purchasing online, there is a risk of receiving counterfeit or low-quality parts masquerading as genuine J&D products. Buying from reputable sellers (e.g., authorized dealers or well-reviewed online retailers) can mitigate this risk but adds an extra layer of caution.

6. **Not a Universal Fix:** If the oil pump or related components (such as seals, bearings, or the pump housing) are worn or damaged, replacing just the plunger may not fully resolve the issue. A more comprehensive oil pump overhaul might be necessary, which could be more time-consuming and expensive.

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The Harley-Davidson 3555-15 J&D oil pump plunger is a solid choice for owners experiencing oil pump issues, particularly if they prioritize quality, compatibility, and performance. It offers a reliable solution to restore proper oil circulation and prevent engine damage, making it a worthwhile investment for those who want to avoid generic or low-quality alternatives. However, it is not a perfect fix it requires careful consideration of cost, availability, and the overall condition of the engine.

If your oil pump is failing and you suspect the plunger is the culprit, this part is a strong option, especially if you are comfortable with basic mechanical work or have access to a mechanic. For those on a tight budget or dealing with a severely degraded oil pump, weighing the cost against the potential need for additional repairs is essential.

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- You are experiencing oil pump-related issues (e.g., low oil pressure, leaks, or poor lubrication).

- You want a high-quality, durable part that is specifically designed for your Harley-Davidson engine.

- You are prepared to handle the installation yourself or have access to a trusted mechanic.

- You are willing to invest in a part that may extend the life of your oil pump and prevent more costly engine damage.

- You are unsure whether the plunger is the root cause of your oil pump problems (a diagnostic check may be needed).

- You are working with a severely worn oil pump and expect to need additional repairs (e.g., replacing seals or bearings).

- You cannot afford the part or are unwilling to pay for potential repeat replacements due to longevity concerns.

- You are purchasing from an untrusted seller, as counterfeit parts could exacerbate the issue.

**Final Verdict:** For most Harley-Davidson owners facing oil pump plunger failure, the J&D 3555-15 is a recommended upgrade due to its reliability and compatibility. Pair it with a thorough inspection of the oil pump system to ensure long-term success.

Details:

1915-1924 OEM Harley JD Oil Pump Plunger.

part #: 355515 prices

• $125.00-$250.00

specifications cyclevintagee:

• for makes: Harley
• brand: Harley-davidson
• mpn: 3555-15
• part type: Oil Pump
• compatible model: Jd
• vintage part: Yes

offer cyclevintagee:

• sold: 0
• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: February 3, 2026
• quantity: 1

shipping cyclevintagee:

• cost: $5.52
• service: USPS Ground Advantage
• carrier: USPS
• transit: 4-10 Days
• class: Standard
• type: Calculated

payments cyclevintagee:

• other
• credit card: Discover
• wallet: Paypal

seller cyclevintagee:

• rating: 0.0%
• city: Pittsburgh, Pennsylvania
• # reviews: 416

general cyclevintagee:

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

returns cyclevintagee:

• policy: No Returns

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