Details
Description for 3K6837 Ring Retainer
â–¶Specification for 3K6837 Ring Retainer
â–¶Exact Fit Guarantee for 3K6837 Ring Retainer
â–¶Reviews
Customer Reviews
Science I buy parts from propel parts I don’t have to spend too much down time always on time and good service
Excellent and prompt response.
Propel parts team helped me greatly regarding a special request and I always get prompt response.
They’re fantastic!
Great prices prompt courteous customer service and fast shipping.
They were great to deal with
Helpful with making sure parts fit my machine
Rapid response! Excellent 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!!!
Amazing Help.
I don't know who I spoke with, but they were helpful. We will be buying those parts shortly.
Great people! Good and fast service. Always looking to help get what you need! 10/10 ????????
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.
Product Questions
Frequently Asked Questions
What is the 3K6837 ring used for?
The 3K6837 is a ring component that maintains a seal or secures a part in place, depending on its application in the assembly.
How do I install the 3K6837 ring?
Fitting the 3K6837 correctly comes down to clean surfaces and following the manual sequence. Work through these steps:
- Shut down and depressurize or disassemble the area safely
- Remove the old ring and clean its groove or seat
- Inspect the groove and mating surfaces for wear
- Fit the 3K6837 squarely without distorting or over-stretching it
- Reassemble and verify correct seating and operation
Which Caterpillar machines is the 3K6837 compatible with?
Fitment for the 3K6837 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. If you are unsure don't hesitate to reach out to Propel Parts for help verifying fitment.
Does the 3K6837 ring meet performance standards?
Yes. The 3K6837 is manufactured to meet OEM specifications for tolerance and material quality. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications for dependable, long-term performance.
How often should the 3K6837 be replaced?
Plan to replace the 3K6837 during a rebuild of the surrounding components, or sooner if inspection shows it is past its serviceable limit.
What are the signs of a worn or failing 3K6837 ring?
When the 3K6837 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- Leaks or loss of pressure
- A worn, broken, or distorted ring on removal
- Reduced performance in the assembly
- Blow-by or contamination past the ring
Why is the 3K6837 important, and what related parts work with it?
Replacing the 3K6837 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. Related hardware on our site includes 1368308 Pin and 2465914 12g 130g 140g 160g Hydraulic Cylinder Seal Kit.
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.
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.

