New 4R9999 Excluder-Cranksha Replacement suitable for Caterpillar Equipment
- New Excluder-Cranksha Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 4R9999 Crankshaft Seal
â–¶Specification for 4R9999 Crankshaft Seal
â–¶Exact Fit Guarantee for 4R9999 Crankshaft Seal
â–¶| 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 |
|---|---|
| Dimensions | 4.33x4.33x0.39 |
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Diego Romero (Uruguay)100%Excellent service and quick response!
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Leon Bachu (Uganda)100%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 -
Jacob Denny (Kentucky, USA)100%My part was damaged in shipping and everyone was very helpful on get it resolved and sent me another free of charge.
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Eliana Rivadeneira (Florida, USA)100%Excellent experience.
Mike has been very helpful. I am looking forward to keep doing business with them -
Ray Gordon (North Carolina, USA)100%Excellent customer service and parts.
You guys have always gave excellent customer service!!! Very prompt responsiveness. Warranty services are superb. I have been using them for quite awhile now on equipment I have. Always great prices for parts! Keep up the great work guy's
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.
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...

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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