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New 4D9986 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
4.7
(Site rating)Description for 4D9986 Seal O Ring
▶Specification for 4D9986 Seal O Ring
▶Exact Fit Guarantee for 4D9986 Seal O Ring
▶| Dimensions | 1.18x1.18x0.12 |
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The best supplier ever we mainly deal with most rare needed parts .. i highly recommend .. they are very very honest
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I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
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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. -
customer service and parts availability is fantastic
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Excellent customer service and parts.
You guys have always gave excellent customer service!!! Very prompt responsiveness. Warranty services are superb. I have been using them for quite awhile now on equipment I have. Always great prices for parts! Keep up the great work guy's
Frequently Asked Questions
What is the Caterpillar Seal O-Ring 4D9986 and what does it do?
The 4D9986 O-ring seal is a precision-engineered circular sealing element made from durable elastomeric material. For the complete selection of O-ring seals for heavy equipment, visit our seals category.
Which Caterpillar equipment models is the 4D9986 compatible with?
The 4D9986 O-ring is designed for use across a broad range of Caterpillar equipment. Always verify using your equipment's serial number and service manual before ordering.
How do I know when my O-ring needs replacing?
Common signs include:
- Visible fluid leaks around fittings, ports, or connectors
- Staining or residue buildup near sealing points
- Pressure drops in hydraulic or fuel systems
- Swelling, cracking, or flattening of the seal when inspected during service
How do I properly install the 4D9986 O-ring seal?
Clean the groove and mating surfaces, lightly lubricate the O-ring, seat it evenly without twisting, and tighten fittings to the specified torque. A twisted or pinched O-ring is the most common cause of premature seal failure.
Is the 4D9986 a high-quality aftermarket part?
Yes ??? this is a premium aftermarket O-ring seal that meets or exceeds OEM specifications. For related engine sealing components, visit our engine sealing components category.
What materials are used in this O-ring?
The 4D9986 O-ring is manufactured using high-grade elastomeric compounds, often featuring a PTFE coating that reduces installation friction and extends operational life.
What is the warranty on the 4D9986 O-ring from Propel Parts?
All parts sourced through Propel Parts come backed by a 12-month warranty. Orders placed on weekdays by 3:00 PM ET ship the same day, and Propel Parts ships to over 90 countries worldwide.
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.
1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
NO CORE OR EXCHANGE CHARGES
EASY RETURNS & FAST REFUNDS
