New 6H3999 Seal-Oil Replacement suitable for Caterpillar 824G, 824G II, 824H, 966G, 966G II, 966H, 972G, 972G II, 972H, 980C, 980F, 980G, 980G II, 980H, 3176C, 3196, 3306, 3406, 3406B, 3406C, 3406E, C-12, C-13, C11, C13, C15, 826C, 826G, 826G II, 826H, 82
- New Seal-Oil Replacement suitable for Caterpillar Equipment
- Made to USA Specification
Buy with Confidence: All parts are covered by our warranty
Exact Fit Guarantee
This part is guaranteed to fit your machine.
Wrong Part?
We'll overnight correct part at no cost to you.
Exact Fit Guarantee®
×WILL PART FIT?
Yes, it will fit! We offer an Exact Fit Guarantee® or
get your money back.
HOW WE GUARANTEE, EXACT FIT
Before shipping your order, we use CAT SIS to ensure
this part is the exact fit for your equipment.
BUY WITH CONFIDENCE
Purchase with confidence because this part includes a
1 year warranty and it's guaranteed to fit & perform.
Description for 6H3999 Oil Seal
â–¶Specification for 6H3999 Oil Seal
â–¶Exact Fit Guarantee for 6H3999 Oil Seal
â–¶| Models | 3176C, 3196, 3306, 3406, 3406B, 3406C, 3406E, 82, 824G, 824G II, 824H, 826C, 826G, 826G II, 826H, 966G, 966G II, 966H, 972G, 972G II, 972H, 980C, 980F, 980G, 980G II, 980H, C-12, C-13, C11, C13, C15 & more |
|---|---|
| Dimensions | 3.94x3.94x0.39 |
-
Ineva Alexandra (California, USA)100%He resolved all my doubts and gave me clear solutions.
-
Clint Ayers (Kentucky, USA)100%Always helpful and great pricing
-
Diego Romero (Uruguay)100%Good service, quick response.
-
Juan Jauregui100%100% recommend it is a good parts by par for five years and everything is good
-
Nathan Peterson (California, USA)100%rapid response!
This 6H3999 Oil Seal is compatible with the following models:
3176C, 3196, 3306, 3406, 3406B, 3406C, 3406E, 82, 824G, 824G II, 824H, 826C, 826G, 826G II, 826H, 966G, 966G II, 966H, 972G, 972G II, 972H, 980C, 980F, 980G, 980G II, 980H, C-12, C-13, C11, C13, C15 & 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.
Exact Fit Guarantee®
The right part — or we'll make it right.
Order Normally
Know your part number? Simply place your order.
Not Sure?
Place your order, then send us your serial number before it ships.
We'll verify fit.We Make It Right
Wrong part? We'll make it right.Fast. At our expense.
1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
NO CORE OR EXCHANGE CHARGES
EASY RETURNS & FAST REFUNDS
Worldwide Shipping





















































