O-Ring Special

Enhance the performance of your Case Construction equipment with the O-Ring Special #87445405. Designed for durability and precision, this essential part ensures optimal sealing and reliability, keeping your heavy machinery running smoothly in any demanding environment.

Compatible equipment

This part fits SERIES 3 CRAWLER DOZER TIER 3 (NA/EU), CRAWLER DOZER TIER 3 (NA/EU) (HYDRO), WHEEL LOADER - TIER 4B (NA), WHEEL LOADER - TIER 4 (NA), SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006, SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008, CASE WHEEL LOADER (NORTH AMERICA), CRAWLER DOZER TIER 3 including models 1150K, 1650L, 521F, 521G, 621F, 650K, 721D, 750K, 750L, 850K, 850L.

Frequently asked questions

What is the part number?

The manufacturer part number is 87445405.

Is this a genuine OEM part?

Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Where does this ship from?

Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.