New 3P7958 Pump G Replacement suitable for CAT FB518, 518, 518C, 528, 528B, 530B, 528, 3304, 3306 and more
- Pump G Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 3P7958 Gear Pump
â–¶Specification for 3P7958 Gear Pump
â–¶Exact Fit Guarantee for 3P7958 Gear Pump
â–¶| Models | 518, 518C, 528, 528B, 530B, FB518, 3304, 3306 |
|---|---|
| Dimensions | 11.02x9.45x7.09 |
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Very thorough ! Confirmed order and great communications.
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Great place for Cat parts!
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Online order.
I had a good experience this morning I placed an online order and everything went smoothly. The staff at propel parts has always been helpful in the past when I have been looking for harder to find parts or something that wasn’t listed online. -
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Excelente atencion y refacciones de calidad
Frequently Asked Questions
What is the function of the 3P7958 Pump G in Caterpillar equipment?
The 3P7958 Pump G plays a critical role in maintaining proper fluid circulation within your machine???s system. It helps regulate pressure and ensures smooth hydraulic or fuel system operation, supporting overall equipment efficiency and reducing internal wear over time.
Which Caterpillar machines are compatible with the 3P7958 Pump G replacement?
The 3P7958 Pump G replacement is suitable for a wide range of CAT machines, including models like 518, 518C, 528, 528B, 530B, and engines such as 3304 and 3306. Compatibility may vary depending on your specific configuration. Always check your manual or reach out to Propel Parts for help verifying fitment.
How do I install the 3P7958 Pump G replacement?
To ensure proper installation, follow these general steps:
- Power off the equipment and allow it to cool completely
- Relieve any system pressure as outlined in your service manual
- Remove the old pump carefully
- Clean the mounting surface and surrounding area
- Install the new 3P7958 Pump G securely according to specifications
- Restart the machine and check for leaks or irregular performance
For best results, refer to your equipment manual for detailed instructions.
Does the 3P7958 Pump G replacement meet OEM performance standards?
Yes, this replacement pump is engineered to meet OEM specifications and deliver reliable performance under demanding conditions. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to maintain system integrity and long-term durability.
What are the common signs of a failing or worn-out pump?
A failing pump can lead to several noticeable issues, including:
- Reduced hydraulic or engine performance
- Inconsistent pressure levels
- Unusual noises from the pump area
- Fluid leaks or overheating
- Slower machine response times
Early detection and replacement can help prevent costly downtime and further damage.
How often should the 3P7958 Pump G be replaced?
Replacement intervals depend on usage, operating conditions, and maintenance practices. Machines operating in heavy-duty or harsh environments may require more frequent inspections and replacements. Regular servicing ensures optimal performance and helps extend equipment life.
Why is it important to choose a high-quality replacement pump?
Using a reliable replacement pump ensures proper system performance and protects critical components from damage. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to maintain efficiency, reduce downtime, and support long-term machine reliability.
Can I use an aftermarket 3P7958 Pump G instead of an original part?
Yes, premium aftermarket options are a dependable choice when they are designed to meet OEM specifications. High-quality aftermarket parts provide excellent performance and durability, making them a practical and cost-effective solution for maintaining your equipment without compromising quality.
This 3P7958 Gear Pump is compatible with the following models:
518, 518C, 528, 528B, 530B, FB518, 3304, 3306 & more...

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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