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New 3B9378 Seal-Oil Replacement suitable for Caterpillar 966G, 972G, 980G, 980G II, 988B, 992C, 992D, 574, 3406, 3406B, 3406C, 3406E, 3408, 3408C, 3408E, 3412, 826C, and more
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Trusted Since 2012
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Description for 3B9378 Oil Seal
â–¶Specification for 3B9378 Oil Seal
â–¶Exact Fit Guarantee for 3B9378 Oil Seal
â–¶Reviews
Customer Reviews
Very helpful. Every question or request I had was answered quickly. I didn't have a parts book for my excavator but that was no problem for them. If you need parts for your Cat, give them a shot.
Excelente servicio rapido, responsable y confiable
Amazing Help.
I don't know who I spoke with, but they were helpful. We will be buying those parts shortly.
Fast communication, and very Helpful!
rapid response!
The gentleman was very helpful
They are great !
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
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.
Excellent and prompt response.
Propel parts team helped me greatly regarding a special request and I always get prompt response.
They’re fantastic!
Product Questions
Compatible Models
This 3B9378 Oil Seal is compatible with the following models:
3406, 3406B, 3406C, 3406E, 3408, 3408C, 3408E, 3412, 574, 826C, 966G, 972G, 980G, 980G II, 988B, 992C, 992D & more...
Shipping | Returns
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.
Exact Fit Guarantee
Exact Fit Guarantee®
The right part — or we'll make it right.
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Place your order, then send us your serial number before it ships.
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We Make It Right
Wrong part? We'll make it right.Fast. At our expense.