New 1866319 Washer Replacement suitable for Caterpillar Equipment

  • New Washer Replacement suitable for Caterpillar Equipment
  • Made to USA Specification

Buy with Confidence: All parts are covered by our warranty

$9.92
In Stock • Ships Today • Order By 3pm ET
Excellent on Trustpilot
Fit Guarantee

Exact Fit Guarantee

This part is guaranteed to fit your machine.

Wrong Part

Wrong Part?

We'll overnight correct part at no cost to you.

SKU
1866319CTP
Secure Checkout< Secure Checkout Trusted Since 2012
Buy Now
Also accepts PayPal and Apple Pay

Description for 1866319 Washer

â–¶
This aftermarket Caterpillar 1866319 Washer 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 Washer.
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 1866319 Washer

â–¶
Replacement Part Number(s): 186-6319
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: 0.50 LBS | 0.23 KG
Dimensions: 7.48 x 7.48 x 0.39 (inches)
Condition: New

Exact Fit Guarantee for 1866319 Washer

â–¶
Looking for a reliable replacement Caterpillar 1866319 Washer ? 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 7.48x7.48x0.39
Customer Reviews
  1. 100%
    Grateful I found this company!
    I’m grateful I found this company! They answer the phone every time plus the parts are packaged very well!! Even the angriest mailman couldn’t damage your parts! lol The parts showed up as planned and for being aftermarket the quality seems to be good!! The warranty is the same as CAT. Thank you Daniel!!!
  2. 100%
    Great company to deal with. Answered my questions with detail and shipped me the part in good time! I will be dealing with them more in the future!
  3. 100%
    Excellent service and very very good service
  4. 100%
    Steven & Propel Parts were a huge help! We were able to place a large order and get it shipped out same day to avoid a line down situation for a customer due to a lost component. The order was even submitted after the 3pm cutoff for same day shipments and we got it the next morning!
  5. 100%
    customer service and parts availability is fantastic
Write Your Own Review
You're reviewing:New 1866319 Washer Replacement suitable for Caterpillar Equipment
Your Rating

Frequently Asked Questions

Product

What is the 1866319 washer used for?

The 1866319 is a washer that distributes load under a bolt or nut, guarding the mating surface and supporting consistent clamp force.

How do I install the 1866319 washer?

Fitting the 1866319 correctly comes down to clean surfaces and following the manual sequence. Work through these steps:

  1. Power down the machine and isolate the assembly before service
  2. Clean the seating surface and check it for damage or burrs
  3. Place the 1866319 in the correct orientation under the fastener
  4. Torque the fastener to specification so the washer seats evenly

Which Caterpillar machines is the 1866319 compatible with?

Fitment for the 1866319 depends on your specific Caterpillar model and the assembly it serves, so confirm the application before you order. Check your manual or reach out to Propel Parts for help verifying fitment.

Does the 1866319 washer meet performance standards?

Yes. The 1866319 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 1866319 be replaced?

Plan to replace the 1866319 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 1866319 washer?

When the 1866319 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:

  • A joint that won't hold torque
  • Cupping, cracking, or flattening of the washer
  • Marking or embedding into the mating surface
  • Corrosion that weakens the contact area

Why is the 1866319 important, and what related parts work with it?

Replacing the 1866319 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 1118606 Bolt Oil Jet and 1D4610 Cap Screw High He.

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.

Exact Fit Guarantee®

The right part — or we'll make it right.

1

Order Normally

Know your part number?
Simply place your order.

2

Not Sure?

Place your order, then send us your serial number before it ships.

We'll verify fit.
3

We Make It Right

Wrong part? We'll make it right.

Fast. At our expense.