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

We're sorry, an error has occurred while generating this content.

Skip to the beginning of the images gallery

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

Name: 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
Brand: Aftermarket CAT
SKU: 6H3999CTP
Price: 3.255 USD
Availability: InStock
Rating: 4.7 (110 reviews)

Be the first to review this product

New Seal-Oil Replacement suitable for Caterpillar Equipment
Made to USA Specification

Buy with Confidence: All parts are covered by our warranty

$3.26

Six Month Financing

Select paypal credit

4.7

(Site rating)

In Stock | Ships Out Today | Order By 3pm ET

SKU

6H3999CTP

For Easy Checkout | Select Your Card

Details

Description for 6H3999 Seal-Oil

▶

This aftermarket Caterpillar 6H3999 Seal-Oil is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Seal-Oil.

Direct Replacement: Engineered for a precise fit in Caterpillar equipment.

OEM-Spec Quality: Manufactured to match the performance of your original part.

Tested Reliability: Strict quality checks are performed before shipping.

Specification for 6H3999 Seal-Oil

▶

Replacement Part Number(s): 6H-3999

Specifications: Aftermarket Part | US OEM Specs.

Shipping: Same Day (Weekdays) | Order by 3pm.

Warranty: Unlimited Mileage | 1 Year Warranty.

Core: No Core Required | No Core Charge.

Weight: 0.21

Condition: New

Compatible Models for 6H3999 Seal-Oil

▶

This 6H3999 Seal-Oil 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...

Exact Fit Guarantee for 6H3999 Seal-Oil

▶

Looking for a reliable replacement Caterpillar 6H3999 Seal-Oil ? Order with confidence through our Exact Fit Guarantee.

Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.

Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.

Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.

More Information

More Information
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

Reviews

Customer Reviews

Denise (Ohio, USA) 08/27/2025

100%

When I had questions, they were answered quickly and kindly.

Thank you!!
Diego Romero (Uruguay) 07/21/2025

100%

Good service, quick response.
Kris Huber (Ontario, Canada) 02/13/2025

100%

Great company to deal with. Answered my questions with detail and shipped me the part in good time! I will be dealing with them more in the future!
Ian (Australia) 11/28/2024

100%

Quick and efficient.
Great products and a great team to deal with. We had a small issue with a missing part and the Customer Services Team dealt with it quickly and efficiently and in a way which left me, the customer, feeling entirely satisfied. Would highly recommend.
Delwyn Vince Chiong (Philippines) 05/14/2024

100%

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

Write Your Own Review

You're reviewing: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

Your Rating

Review

1 star 2 stars 3 stars 4 stars 5 stars

Nickname

Summary

Review

Product Questions

Questions About This Part?

Have a question about fit, compatibility, shipping, warranty, or returns?

Your question:

Your name:

get notification on email when the answer is ready

Your e-mail:

Compatible Models

Returns & Warranty

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.

Shipping

Same Day Shipping

Orders placed weekdays, by 3pm ET, ship out same day.

United States & Canada

Click Check Delivery Times for discounted Ground, 2-Day & Overnight rates

International Shipping

We have served customers in over 90 countries. Click Check Delivery Time .