8F9866 Grease Gun Kit for CAT Equipment

  • Grease Gun Kit Replacement suitable for Caterpillar Equipment
  • Made to USA Specifications

Buy with Confidence: All parts are covered by our warranty

$29.15

4.7

(Site rating)
In Stock | Ships Out Today | Order By 3pm ET
SKU
8F9866CTP
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Description for 8F9866 Grease Gun

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This aftermarket Caterpillar 8F9866 Grease Gun 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 Grease Gun.
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 8F9866 Grease Gun

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Replacement Part Number(s): 8F-9866
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: 4.12 LBS | 1.87 KG
Dimensions: 17.13 x 6.50 x 3.15 (inches)
Condition: New

Exact Fit Guarantee for 8F9866 Grease Gun

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Looking for a reliable replacement Caterpillar 8F9866 Grease Gun ? 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 17.13x6.50x3.15
Customer Reviews
  1. 100%
    A Delay Handled the Right Way
    Honestly, if I were in Miami like my shipment was, I wouldn?t have been in a hurry to ship out either. I was frustrated at first ? delays cost me time on the job ? but Propel Parts stepped up.

    Deb, Daniel and the team owned the mistake, kept the communication clear, and graciously refunded my shipping costs without making it a hassle. That kind of accountability is rare these days, and I genuinely appreciated how they handled it.

    Things don?t always go perfectly, but these folks proved they?re more interested in doing right by their customers than just pushing parts out the door. Solid company, solid people.

    ? Jimmy Spong
    Hartco Mobile Welding

    P.S. Incredible quality on the pin as well. I had to do some custom modifying, and let?s just say the case hardening was ? well ? hard. Great Stuff! Thank you.
  2. 100%
    Rapid response! Excellent service!
  3. 100%
    Great customer service answered email question quickly.
  4. 100%
    He was a great help with ordering and refunding the sales tax,
  5. 100%
    I almost want to cry ;( writing this review because I dont want people to find out about them and rather keep them in my pocket but they deserve it…
    This company is great with Quality Products at amazing prices! Sometimes, their website is not the most accurate but is user friendly and if you got questions they will call back and are very prompt in responding via a call or text to verify inventory before placing an order.
    I really appreciate and look forward to continuing to work with you all especially Anthony — he is amazing & the best!!!
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Frequently Asked Questions

Product

What is the 8F9866 grease gun kit used for?

The 8F9866 grease gun kit is designed to deliver lubrication to critical moving components in heavy equipment. It helps reduce friction, prevent wear, and extend the lifespan of parts by ensuring consistent and proper grease application in demanding operating conditions.

How do I use the 8F9866 grease gun kit properly?

Follow these basic steps for effective use:

  • Clean the grease fitting (zerk) before application
  • Load the grease cartridge into the gun
  • Securely attach the coupler to the fitting
  • Pump the handle to apply grease evenly
  • Remove the coupler and wipe away excess grease

Proper usage helps maintain smooth equipment operation and prevents contamination.

Which CAT equipment is compatible with the 8F9866 grease gun kit?

The 8F9866 grease gun kit is commonly used across a wide range of CAT heavy equipment for maintenance and lubrication tasks. Compatibility depends on your specific machine and application.

Check your manual or reach out to Propel Parts for help verifying fitment.

Does the 8F9866 grease gun kit meet performance standards?

Yes, this grease gun kit is built to meet OEM specifications, ensuring reliable performance and durability in heavy-duty environments. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to maintain optimal equipment performance.

How often should I lubricate equipment using a grease gun kit?

Lubrication frequency depends on the type of equipment, workload, and operating conditions. Machines working in harsh or dusty environments may require more frequent greasing. Always follow manufacturer-recommended service intervals to ensure proper maintenance.

What are the signs that my equipment needs lubrication?

Common indicators include:

  • Increased noise during operation
  • Visible wear on moving parts
  • Reduced efficiency or sluggish movement
  • Overheating components

Routine lubrication helps prevent these issues and minimizes costly downtime.

Why is proper lubrication important for heavy equipment?

Proper lubrication reduces friction between moving parts, prevents premature wear, and protects components from contamination. This ensures smoother operation, improved efficiency, and longer service life. Using genuine or high-quality aftermarket parts that meet or exceed OEM specifications supports consistent maintenance results.

Can I use aftermarket grease gun kits instead of original parts?

Yes, premium aftermarket grease gun kits are a reliable alternative when they meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to ensure durability, proper fit, and dependable 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.