New 1390566 Seal As Replacement suitable for Caterpillar Equipment
- New Seal As Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 1390566 Seal Assem
▶Specification for 1390566 Seal Assem
▶Exact Fit Guarantee for 1390566 Seal Assem
▶| Dimensions | 4.53x1.57x4.53 |
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Been buying from them for years and have almost never had an issue. The few times I had a question or something to handle, they have shown amazing customer service. Great product and a great company.
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Excellent service and quick response!
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The customer care response was very awesome. It was more than what I expected
The customer care response was very effective and timely
The response time was amazing
The availability of most of the parts that I wanted was also very awesome
Thanks keep it up -
Great customer service
Anthony was very professional and on top of what needed to be done to get my order verified and moving forward. -
Great customer service!
Frequently Asked Questions
What is the Caterpillar 1390566 seal assembly used for?
The 1390566 seal assembly is designed to help prevent fluid leakage and contamination within Caterpillar equipment systems, supporting reliable hydraulic and engine performance.
What are the benefits of using a high-quality seal assembly?
- Helps maintain proper system sealing
- Reduces the risk of leaks and contamination
- Supports efficient hydraulic and engine operation
What are common signs that a seal assembly should be replaced?
Signs include fluid leakage, pressure loss, visible wear, cracking, or reduced sealing performance during operation.
Why are seals important in heavy equipment systems?
Proper sealing helps maintain system pressure, protect internal components from contamination, and reduce unnecessary equipment downtime.
Is the 1390566 seal assembly compatible with multiple Caterpillar machines?
Yes, this seal assembly may fit various Caterpillar equipment applications depending on machine configuration. If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.
Are aftermarket seal assemblies dependable?
Yes. Premium aftermarket seal assemblies that meet or exceed OEM specifications provide reliable sealing performance and durability in demanding applications.
Are related sealing products available for similar applications?
Yes, products such as the Caterpillar 1079570 seal O-ring are commonly used in related Caterpillar systems requiring dependable leak prevention.

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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