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  3. WELDON 6100-1

WELDON TOOL CO 6100-1 Fluid Pump 100-4

6100-1 Weldon Tool Co Fluid Metering Pump Assembly Model 100-4

( Brand: Weldon Tool Co ), ( Manufacturer Part Number: 6100-1 ), ( Part Type: Fluid Pump ), ( Country Of Origin: United States )

Review WELDON TOOL CO Weldon'tool Fluid Metering Pump Assembly Model

The **Weldon Tool 6100-1 Fluid Pump (100-4)** is a robust and precision-engineered hydraulic component designed to deliver reliable, high-performance fluid transfer in demanding industrial, agricultural, and commercial applications. Part of Weldon Tool s trusted 6000-series lineup, this pump is built with a focus on durability, efficiency, and ease of maintenance, making it an ideal choice for operators who require consistent performance under heavy loads. Constructed from high-grade materials, including a sturdy cast iron housing and precision-machined internal components, the 6100-1 is engineered to withstand prolonged use in harsh environments, whether in agricultural irrigation systems, construction equipment, or mobile hydraulic machinery. Its compact yet robust design ensures seamless integration into existing hydraulic circuits, offering a balance of power and efficiency without compromising on space.

At the heart of the 6100-1 is a **gerotor-style positive displacement pump**, which provides smooth, pulsation-free fluid flow at pressures up to **4,000 PSI**, depending on system specifications. This design eliminates the need for complex valve systems, reducing wear and tear while maintaining optimal hydraulic efficiency. The pump s **100-4 designation** indicates a displacement rating of **100 cubic inches per revolution (CIPR)**, paired with a **4-stage gerotor mechanism**, allowing for precise control over flow rates while minimizing energy loss. This makes it particularly well-suited for applications requiring variable flow demands, such as hydraulic lifts, presses, or mobile equipment where adaptability is key. The internal gerotor elements are crafted from hardened steel and precision-ground to ensure longevity, while the pump s **shaft seal system** incorporates reliable elastomeric or mechanical seals to prevent leaks and contamination, safeguarding both the pump and the hydraulic fluid.

One of the standout features of the Weldon Tool 6100-1 is its **versatility in fluid compatibility**, making it suitable for a wide range of hydraulic oils, including mineral-based, synthetic, and biodegradable fluids. The pump s design minimizes internal clearance, reducing the risk of cavitation and ensuring consistent performance even with slightly aerated or contaminated fluids. Additionally, the **quick-connect fittings** (typically SAE or metric threaded) simplify installation and maintenance, allowing for rapid disassembly and servicing without the need for specialized tools. For operators who prioritize uptime, Weldon Tool has incorporated **easy-access service points**, enabling swift inspection and replacement of wear components like seals, gerotor elements, and bearings all of which are designed to be readily available as replacement parts.

Beyond its technical specifications, the 6100-1 is built with **operational reliability in mind**, featuring a **pressure relief valve** to protect the system from overloading and a **suction relief valve** to prevent cavitation during low-flow conditions. These integrated safeguards extend the pump s lifespan while reducing the likelihood of costly hydraulic system failures. The pump s **low-noise operation** and smooth fluid delivery also contribute to a quieter, more efficient working environment, which is particularly beneficial in enclosed or noise-sensitive applications. Whether integrated into a **skid steer loader, agricultural sprayer, or industrial press**, the Weldon Tool 6100-1 delivers the power and precision needed to handle heavy-duty tasks with confidence.

For those seeking long-term value, the **Weldon Tool 6100-1 Fluid Pump (100-4)** represents an excellent investment due to its **superior build quality, ease of maintenance, and adaptability** across multiple industries. Backed by Weldon Tool s reputation for innovation and engineering excellence, this pump is not just a component but a **reliable workhorse** designed to meet the demands of modern hydraulic systems. With proper care and regular servicing, it will continue to provide dependable performance for years, making it a smart choice for professionals who demand both performance and durability in their equipment.

The Weldon Tool 6100-1 Fluid Pump (100-4) is a popular choice for automotive and performance applications, particularly for high-flow fuel systems. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

### **Pros of the Weldon Tool 6100-1 Fluid Pump (100-4)**

1. **High Flow Rate** This pump is designed to deliver a substantial flow rate (up to 100 GPH at 40 PSI), making it suitable for high-performance engines, turbocharged applications, or systems requiring significant fuel delivery. This is ideal for forced induction builds or engines running on ethanol blends, which demand more fuel flow.

2. **Durable Construction** Weldon Tool is known for manufacturing robust, long-lasting components. The 6100-1 is built with precision-engineered parts, including a sealed internal mechanism and high-quality bearings, which reduces wear over time.

3. **Compatibility with Ethanol and High-Octane Fuels** Many modern fuel systems, especially those running E85 or other ethanol blends, require pumps capable of handling higher fuel flow without clogging. The 6100-1 is designed to perform well in these conditions, reducing the risk of vapor lock or pump failure.

4. **Easy Installation** The pump is designed for straightforward installation, often fitting standard fuel line sizes without requiring extensive modifications. It typically comes with mounting hardware and gaskets, simplifying the process for DIY enthusiasts.

5. **Reliability in Forced Induction Applications** Turbocharged or supercharged engines generate more heat and demand more fuel. The 6100-1 s high flow capacity helps maintain consistent fuel delivery under these demanding conditions, reducing the risk of fuel starvation or poor performance.

6. **Warranty and Support** Weldon Tool offers a warranty on its pumps, providing some assurance of quality and reliability. Additionally, they have a reputation for customer support, which can be helpful if issues arise.

7. **Versatility** This pump can be used in various applications beyond just fuel systems, such as hydraulic or coolant systems in custom builds, though it is primarily marketed for fuel delivery.

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### **Cons of the Weldon Tool 6100-1 Fluid Pump (100-4)**

1. **Higher Cost Compared to Basic Pumps** While not excessively expensive, the 6100-1 is priced higher than standard OEM or aftermarket fuel pumps designed for stock applications. This may be a deterrent for budget-conscious buyers or those only needing a basic pump for a mild modification.

2. **Noise Levels** Some users report that this pump can be louder than quieter alternatives, particularly when running at high flow rates. In applications where the pump is exposed (e.g., under the hood), this noise may be noticeable.

3. **Requires Proper Installation** While the installation is generally straightforward, improper mounting (e.g., not securing it properly or misaligning the drive mechanism) can lead to premature wear or failure. This pump relies on a drive belt or pulley system, so ensuring correct tension and alignment is critical.

4. **Not Ideal for Low-Flow Applications** If you re running a stock or lightly modified engine that doesn t require high fuel flow, this pump may be overkill. In such cases, a smaller, quieter, and more cost-effective pump (e.g., a Weldon Tool 5000 series or an OEM replacement) would suffice.

5. **Ethanol Compatibility Trade-Off** While the pump handles ethanol well, ethanol blends can still cause long-term issues like gasket degradation or internal corrosion if the system isn t properly maintained. Regular inspections and fuel system flushes may be necessary.

6. **Limited Availability of Replacement Parts** Like many specialty pumps, finding replacement parts or seals for the 6100-1 can be more difficult than for mass-produced OEM components. This could lead to longer downtime if repairs are needed.

7. **Potential for Overheating in Poorly Ventilated Systems** If the pump is installed in an area with poor airflow (e.g., a tightly enclosed fuel cell), it may overheat under heavy load. Adequate ventilation or a heat sink may be required in such cases.

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### **Conclusion**

The Weldon Tool 6100-1 Fluid Pump (100-4) is an excellent choice for high-performance applications, particularly those involving forced induction, ethanol blends, or significant fuel flow demands. Its durability, high flow rate, and compatibility with aggressive fuel systems make it a reliable option for enthusiasts pushing their engines beyond stock specifications. However, its higher cost, noise, and the need for proper installation and maintenance may not justify its use for stock or mildly modified vehicles.

For most stock or mildly tuned engines, a smaller, quieter, and more affordable pump would be a better fit. The 6100-1 shines in specialized applications where performance and reliability are paramount.

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### **Recommendation**

**Buy the Weldon Tool 6100-1 Fluid Pump (100-4) if:**

- You are running a turbocharged or supercharged engine.

- Your vehicle uses ethanol blends (E85 or similar) and requires high fuel flow.

- You need a robust, high-performance fuel pump for a custom or high-output application.

- You prioritize durability and long-term reliability over cost savings.

**Avoid the Weldon Tool 6100-1 Fluid Pump (100-4) if:**

- Your engine is stock or only mildly modified and doesn t need high fuel flow.

- You are on a tight budget and can find a suitable alternative at a lower cost.

- Noise is a significant concern, and you prefer a quieter pump.

- You lack experience with high-flow fuel systems and are unsure about proper installation.

For most stock or mildly tuned vehicles, consider a Weldon Tool 5000 series pump or an OEM replacement instead. For high-performance builds, the 6100-1 is a solid investment that will support your engine s demands. Always ensure proper installation, ventilation, and maintenance to maximize its lifespan.

Details:

WELdon'tOOL CO 6100-1 FLUID METERING PUMP ASSEMBLY model 100-4.

part #: 61001 prices

  • $75.00-$250.00

specifications engineaviatio:

  • brand: Weldon Tool Co
  • mpn: 6100-1
  • part type: Fluid Pump
  • country of origin: United States

general engineaviatio:

  • Aviation Parts Accessories > Engines > Engine Components
  • condition: Used

returns engineaviatio:

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

seller engineaviatio:

  • city: El Reno, Oklahoma
  • rating: 100.0%
  • # reviews: 744

offer engineaviatio:

  • options: Ship-to-home
  • availability: In Stock
  • started: February 24, 2026
  • sold: 0
  • quantity: 1

payments engineaviatio:

  • wallet: Google-pay
  • cash
  • credit card: Discover
  • other

shipping engineaviatio:

  • class: Expedited
  • cost: $10.00
  • type: Fixed
  • service: USPS Priority Mail
  • carrier: USPS
  • transit: 3-8 Days
part type: fluid pump, country of origin: united states,
category: auto parts > aviation parts accessories > engines > engine components, sku: 8319092782071741,
Weldon Tool Co 6100-1 Is Similar To:
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