New 1979257 Ring-Intermediate Replacement suitable for Caterpillar Equipment
- New Ring-Intermediate 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.
Description for 1979257 Ring
â–¶Specification for 1979257 Ring
â–¶Exact Fit Guarantee for 1979257 Ring
â–¶| Dimensions | 6.10x6.10x0.39 |
|---|
-
Original Review (Portuguese)
Muito bom atendimento
Ótima empresa
English Translation
Very good service.
Excellent company. -
Very thorough ! Confirmed order and great communications.
-
I own old cat bulldozers D8k,D8H,D8N that required frequent repairs and servicing. it was erratic and practically cumbersome to keep them running without constant supply of reliable
and affordable spares in Uganda a third world country however,since I started dealing with propel parts US,my bulldozers have earned reliability and efficiency in providing high quality services to clients and making me a great dependable construction company in earth moving.
My shipments are always handled expeditiously and delivered in record time to Uganda this is awesome from Propelparts.
My business is booming by the clock for finding the best partner in Propelparts. -
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 -
Great pricing and fast shipping!
I'll admit that I was skeptical of propel parts, but they are an honest site and came through with the order. I was skeptical because I've never ordered heavy machinery parts, and didn't know who to trust. The parts that I ordered showed in stock, but after checking with their vendor, they only had half of the order in stock. I was notified the day after the order, and most of the parts arrived in a few days. There was one part that was not shipped putz but I was able to talk with who I assumed is the owner who rectified the situation and had the part overnighted to me.
I will say that communication speed could use a little work, but they will eventually get back with you.
Frequently Asked Questions
What is the 1979257 ring used for?
The 1979257 ring seals, retains, or guides within its assembly, holding pressure or position as designed. Its condition directly affects how well the assembly performs.
How do I install the 1979257 ring?
A reliable installation of the 1979257 starts with inspection and ends with verification. Follow this process:
- 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 1979257 squarely without distorting or over-stretching it
- Reassemble and verify correct seating and operation
Which Caterpillar machines is the 1979257 compatible with?
The 1979257 ring is used across many Caterpillar applications, but the correct fit depends on your exact model and assembly. Always cross-check fitment using your service manual or part reference guide before ordering. Please reach out to Propel Parts for help verifying fitment.
Does the 1979257 ring meet performance standards?
Yes. The 1979257 is built to meet OEM specifications for fit, strength, and service life. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to keep the assembly protected.
How often should the 1979257 be replaced?
Service life for the 1979257 depends on operating conditions and load. Replace it on inspection findings or at the interval your manual specifies rather than waiting for a failure. The 5V1511 Pin Assy is often renewed during the same service, so many technicians replace both at once to reduce downtime.
What are the signs of a worn or failing 1979257 ring?
Catching a failing 1979257 early prevents wider damage. The common warning signs include:
- 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 1979257 ring important, and what related part is commonly replaced with it?
Keeping the 1979257 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. For a complete repair, the 1P3706 Seal is another component from the same assembly that is commonly replaced at the same time.

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.
Worldwide Shipping




















