New 8M4389 Seal O Ring Replacement suitable for Caterpillar Equipment

  • New Seal O Ring Replacement suitable for Caterpillar Equipment
  • Made to USA Specification

Buy with Confidence: All parts are covered by our warranty

$0.18

4.7

(Site rating)
In Stock | Ships Out Today | Order By 3pm ET
SKU
8M4389CTP
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Description for 8M4389 Seal O Ring

This aftermarket Caterpillar 8M4389 Seal O Ring 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 O Ring.
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 8M4389 Seal O Ring

Replacement Part Number(s): 8M-4389
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: 0.01 LBS | 0.00 KG
Dimensions: 0.98 x 0.98 x 0.08 (inches)
Condition: New

Exact Fit Guarantee for 8M4389 Seal O Ring

Looking for a reliable replacement Caterpillar 8M4389 Seal O Ring ? 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
Dimensions 0.98x0.98x0.08
Customer Reviews
  1. 100%
    The best supplier ever we mainly deal with most rare needed parts .. i highly recommend .. they are very very honest
  2. 100%
    Great customer service answered email question quickly.
  3. 100%
    Customer Service.
    I recently had to cancel an order with Propel Parts, and I was thoroughly impressed by the prompt and efficient service I received. Steven handled my request with professionalism and speed, ensuring a hassle-free process. I've purchased parts from Propel Parts before and have never been disappointed. Their consistent reliability and excellent customer service keep me coming back.
  4. 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
  5. 100%
    Propel parts is a very reliable parts source for heavy equipment
    Quick response,good quality parts,favourable prices and always deliver on time
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Frequently Asked Questions

Product

What is the function of the 8M4389 Seal O Ring in Caterpillar equipment?

The 8M4389 Seal O Ring is designed to create a tight seal between connected components, preventing fluid leaks and maintaining proper pressure within the system. It plays a critical role in ensuring smooth operation, protecting internal parts from contamination, and improving overall equipment efficiency.

Is this 8M4389 O Ring compatible with all Caterpillar machines?

This seal O ring is suitable for a range of Caterpillar equipment models, but compatibility may vary depending on your machine’s specifications.

  • Check your equipment manual for part number matching
  • Cross-reference with your existing seal
  • Verify dimensions and application

If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.

What material is this O Ring made from, and how durable is it?

This is a premium aftermarket seal made from high-grade materials designed to withstand:

  • High pressure
  • Temperature variations
  • Exposure to oils and fluids

It is engineered to be long-lasting and meets or exceeds OEM specifications, making it a reliable replacement option.

When should I replace the 8M4389 Seal O Ring?

You should consider replacing the O ring if you notice:

  • Fluid leaks around joints or fittings
  • Cracks, wear, or deformation in the seal
  • Loss of pressure in the system

Regular inspection and timely replacement help avoid costly repairs and downtime. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications.

Can I install this O Ring myself or do I need a professional?

If you have basic mechanical knowledge, you can install the O ring yourself. However, proper installation is crucial:

  • Clean the sealing surface thoroughly
  • Lubricate the O ring before installation
  • Ensure correct placement without twisting

If you're not confident, it’s best to have a technician handle the installation to avoid improper sealing.

How does this O Ring compare to original parts?

This is a high-quality aftermarket replacement that meets or exceeds OEM expectations. It is designed to deliver similar sealing performance, durability, and reliability, making it a cost-effective alternative without compromising quality.

Are there other related sealing components I should replace at the same time?

Yes, during maintenance, it’s often recommended to inspect and replace related sealing components such as:

  • Gaskets
  • Additional O rings
  • Sealing kits

For a wider range of compatible components, explore our seal and O ring category to ensure complete system protection.

Where can I find more parts for Caterpillar equipment maintenance?

For complete maintenance and repair needs, it’s important to source parts from a reliable catalog that covers various systems and applications.

Browse our full selection of engine parts for heavy equipment to find compatible components that support optimal performance.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or 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.