O-ring Special
Case Construction ·13 Fitments
| Machine | Model | Years |
|---|---|---|
| SERIES 3 CRAWLER DOZER TIER 3 (NA/EU) | 1150K | 2006 – 2013 |
| CRAWLER DOZER TIER 3 (NA/EU) (HYDRO) | 1650L | 2007 – 2013 |
| WHEEL LOADER - TIER 4B (NA) | 521F | 2016 |
| WHEEL LOADER - TIER 4B (NA) | 521G | 2016 – 2022 |
| WHEEL LOADER - TIER 4 (NA) | 621F | 2012 – 2014 |
| SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006 | 650K | 2005 – 2008 |
| SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008 | 650K | 2005 – 2008 |
| CASE WHEEL LOADER (NORTH AMERICA) | 721D | 2003 – 2006 |
| SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006 | 750K | 2005 – 2008 |
| CRAWLER DOZER TIER 3 | 750L | 2008 – 2012 |
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.
- Manufacturer part number
- 87445405
- Internal SKU
- IC:87445405
- Brand
- CASE CONSTRUCTION
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.58 lb
Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.
30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.
All 13 fitments
| Machine | Model | Years |
|---|---|---|
| SERIES 3 CRAWLER DOZER TIER 3 (NA/EU) | 1150K | 2006 – 2013 |
| CRAWLER DOZER TIER 3 (NA/EU) (HYDRO) | 1650L | 2007 – 2013 |
| WHEEL LOADER - TIER 4B (NA) | 521F | 2016 |
| WHEEL LOADER - TIER 4B (NA) | 521G | 2016 – 2022 |
| WHEEL LOADER - TIER 4 (NA) | 621F | 2012 – 2014 |
| SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006 | 650K | 2005 – 2008 |
| SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008 | 650K | 2005 – 2008 |
| CASE WHEEL LOADER (NORTH AMERICA) | 721D | 2003 – 2006 |
| SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006 | 750K | 2005 – 2008 |
| CRAWLER DOZER TIER 3 | 750L | 2008 – 2012 |
| SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006 | 850K | 2005 – 2008 |
| SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008 | 850K | 2005 – 2008 |
| CRAWLER DOZER TIER 3 | 850L | 2008 – 2013 |