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New 4R9999 Excluder-Cranksha Replacement suitable for Caterpillar Equipment
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Description for 4R9999 Crankshaft Seal
â–¶Specification for 4R9999 Crankshaft Seal
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Customer Reviews
They were great to deal with
Everything fine, thank you. The only thing with which I had a problem in your Software, is that when I have more than 10 different items on the list, I can't scroll to the first ones. But besides that, I am very happy in going on with buying your parts.
customer service and parts availability is fantastic
Have been buying parts from them for years, and they have always delivered, both with parts and customer service.
I put 2 of the same orders in due to a web page error and shortly after I was contacted by Deb from customer service asking if I meant to place both orders. She was very helpful, the email was very well written and it genuinely made me feel better about the whole experience. She resolved the issue quickly and with there not being much of customer service these days I was very happy so see that is not the case everywhere!!!
100% excelente
Excellent service and quick response!
Excellent service!! Yes, very satisfied with the service, you have been very kind!
Propel Parts provided quality parts for my Caterpillar needs at a very fair price. Shipping to my international location was very fast. took about a week for the parts to get here. Seller is also responsive with my inquiry.
Thanks again
Steven & Propel Parts were a huge help! We were able to place a large order and get it shipped out same day to avoid a line down situation for a customer due to a lost component. The order was even submitted after the 3pm cutoff for same day shipments and we got it the next morning!
Product Questions
Frequently Asked Questions
What is the function of the 4R9999 crankshaft excluder in Caterpillar equipment?
The 4R9999 crankshaft excluder is designed to protect the crankshaft seal by preventing dirt, dust, and debris from entering the sealing area. It also helps retain engine oil inside the engine by supporting proper sealing around the crankshaft, which contributes to reliable engine performance and reduced contamination.
Which Caterpillar machines are compatible with the 4R9999 crankshaft excluder?
To ensure the 4R9999 is the correct fit for your machine, cross-reference the part number with your equipment manual or parts catalog. If you have any doubts, the Propel Parts team is available to point you in the right direction.
What does a crankshaft seal excluder do in an engine?
A crankshaft seal excluder works alongside the main crankshaft seal to keep contaminants away from the sealing surface. By blocking dust and debris while helping maintain oil retention, it reduces the risk of leaks and helps extend the service life of the engine's sealing components.
Does the 4R9999 crankshaft excluder meet OEM performance standards?
That\'s correct. The 4R9999 replacement is produced to meet OEM requirements and deliver the performance expected in heavy equipment applications. For any fitment questions, contact Propel Parts directly.
What are common signs of a worn or failing crankshaft seal excluder?
A damaged or worn crankshaft excluder may lead to several issues, including:
- Oil leaks near the crankshaft area
- Dirt or debris buildup around the seal
- Increased engine contamination
- Premature wear of the crankshaft seal
Regular inspection during engine maintenance can help detect these issues early.
How do you install the 4R9999 crankshaft excluder?
To install the 4R9999 Caterpillar crankshaft excluder, follow these general steps:
- Turn off the engine and allow it to cool completely
- Remove surrounding components to access the crankshaft seal area
- Carefully remove the worn excluder and inspect the seal surface
- Clean the mounting area to remove dirt or oil residue
- Install the new excluder in the correct position
- Reassemble the components and ensure proper alignment
- Start the engine and check for leaks or abnormal vibration
Always follow the service manual for torque specifications and installation procedures.
How can I verify the correct crankshaft seal excluder for my Caterpillar engine?
High-quality aftermarket 4R9999 parts designed to OEM specifications are a solid option for equipment owners seeking reliable performance at a competitive price. As long as the part meets or exceeds OEM standards, it\'s a confident choice.
Compatible Models
This 4R9999 Crankshaft Seal is compatible with the following models:
3116, 3126, 120H, 120H ES, 120H NA, 12H, 12M 2, 12M 3, 12M 3 AWD, 135H, 135H NA, 140G, 140M, 140M 2, 140M 3, 140M 3 AWD, 160M, 160M 2, 160M 3, 160M 3 AWD, 2290, 2390, 2391, 2491, 2590, 2864C, 30/30 & more...
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Shipping
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.
Easy Returns
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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