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New 4S9006 Seal Replacement suitable for Caterpillar Equipment
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Description for 4S9006 Seal U Cup
â–¶Specification for 4S9006 Seal U Cup
â–¶Exact Fit Guarantee for 4S9006 Seal U Cup
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Customer Reviews
Excellent service and quick response!
Great prices prompt courteous customer service and fast shipping.
:) great service
Great pricing and fast shipping!
I'll admit that I was skeptical of propel parts, but they are an honest site and came through with the order. I was skeptical because I've never ordered heavy machinery parts, and didn't know who to trust. The parts that I ordered showed in stock, but after checking with their vendor, they only had half of the order in stock. I was notified the day after the order, and most of the parts arrived in a few days. There was one part that was not shipped putz but I was able to talk with who I assumed is the owner who rectified the situation and had the part overnighted to me.
I will say that communication speed could use a little work, but they will eventually get back with you.
The best supplier ever we mainly deal with most rare needed parts .. i highly recommend .. they are very very honest
Excellent Customer service
Stevens the man. Placed my order and sent him the order # and had me in the loop within an hour.
Helpful with making sure parts fit my machine
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
Quick Response. Very much appreciated.
Product Questions
Frequently Asked Questions
What is the 4S9006 seal used for?
The 4S9006 seal keeps fluids contained and contaminants out where two surfaces meet or a shaft rotates. A sound seal maintains pressure, prevents leaks, and protects the components it isolates.
How do I install the 4S9006 seal?
Fitting the 4S9006 correctly comes down to clean surfaces and following the manual sequence. Work through these steps:
- Shut down and depressurize the system, then let it cool if needed
- Remove the old seal and clean the bore and shaft surfaces
- Inspect the sealing surface for scoring, pitting, or wear
- Lightly lubricate the 4S9006 as directed and fit it square to the bore
- Seat it to the correct depth without distorting the lip, then check for leaks
Which Caterpillar machines is the 4S9006 compatible with?
The 4S9006 seal is used across many Caterpillar applications, but the correct fit depends on your exact model and assembly. Always cross-check fitment using your service manual or part reference guide before ordering. Or reach out to Propel Parts for help verifying fitment.
Does the 4S9006 seal meet performance standards?
Yes. The 4S9006 is built to meet OEM specifications for fit, strength, and service life. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to keep the assembly protected.
How often should the 4S9006 be replaced?
Service life for the 4S9006 depends on operating conditions and load. Replace it on inspection findings or at the interval your manual specifies rather than waiting for a failure.
What are the signs of a worn or failing 4S9006 seal?
When the 4S9006 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- Visible fluid leaks or seepage at the joint
- Loss of system pressure
- Contamination found inside the assembly
- A hardened, cracked, or torn sealing surface
Why is the 4S9006 important, and what related parts work with it?
Replacing the 4S9006 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. Related hardware on our site includes 6V1454 Seal O-Ring and CTP3306001C Rebuild Overhaul Gasket Kit D6d D6e D6h 12g 12h 14g 14h 140g 528 2.
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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.
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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.
Warranty
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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