O-ring
Case Construction ·16 Fitments
| Machine | Model | Years |
|---|---|---|
| WHEEL LOADER - TIER 4 (NA) | 1021F | 2011 – 2016 |
| WHEEL LOADER - TIER 4B (NA) | 1021G | 2016 – 2022 |
| WHEEL LOADER TIER 4 (NA) | 1121F | 2010 – 2016 |
| WHEEL LOADER - TIER 4B (NA) | 1121G | 2016 – 2022 |
| WHEEL LOADER - TIER 4 (NA) | 1221F | 2013 – 2015 |
| CASE WHEEL LOADER (BEFORE S/N JEE0135500) | 521D | 2000 – 2002 |
| CASE WHEEL LOADER (S/N JEE0135501 & AFTER) - ENGINE SUPPLEMENT | 521D | 2000 – 2002 |
| CASE WHEEL LOADER - NA (S/N JEE0135501 & AFTER) | 521D | 2000 – 2002 |
| CASE WHEEL LOADER | 621C | 1999 – 2001 |
| CASE WHEEL LOADER (BEFORE S/N JEE0135500) | 621D | 2000 – 2002 |
Enhance the performance of your Case Construction equipment with the durable O-Ring #8603355. Designed for optimal sealing and reliability, this essential part ensures efficient operation, reducing downtime and maintenance costs in heavy-duty applications.
Compatible equipment
This part fits WHEEL LOADER - TIER 4 (NA), WHEEL LOADER - TIER 4B (NA), WHEEL LOADER TIER 4 (NA), CASE WHEEL LOADER (BEFORE S/N JEE0135500), CASE WHEEL LOADER (S/N JEE0135501 & AFTER) - ENGINE SUPPLEMENT, CASE WHEEL LOADER - NA (S/N JEE0135501 & AFTER), CASE WHEEL LOADER, WHEEL LOADER TIER 3 (NA), 4WD MOTOR GRADER (LIVERY) - TIER 4, 4WD MOTOR GRADER MY20 - STAGE V, WHEEL LOADER TIER 3 (NA/EU) including models 1021F, 1021G, 1121F, 1121G, 1221F, 521D, 621C, 621D, 621E, 836C, 856C, 921E.
Frequently asked questions
What is the part number?
The manufacturer part number is 8603355.
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
- 8603355
- Internal SKU
- IC:8603355
- Brand
- CASE CONSTRUCTION
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.02 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 16 fitments
| Machine | Model | Years |
|---|---|---|
| WHEEL LOADER - TIER 4 (NA) | 1021F | 2011 – 2016 |
| WHEEL LOADER - TIER 4B (NA) | 1021G | 2016 – 2022 |
| WHEEL LOADER TIER 4 (NA) | 1121F | 2010 – 2016 |
| WHEEL LOADER - TIER 4B (NA) | 1121G | 2016 – 2022 |
| WHEEL LOADER - TIER 4 (NA) | 1221F | 2013 – 2015 |
| CASE WHEEL LOADER (BEFORE S/N JEE0135500) | 521D | 2000 – 2002 |
| CASE WHEEL LOADER (S/N JEE0135501 & AFTER) - ENGINE SUPPLEMENT | 521D | 2000 – 2002 |
| CASE WHEEL LOADER - NA (S/N JEE0135501 & AFTER) | 521D | 2000 – 2002 |
| CASE WHEEL LOADER | 621C | 1999 – 2001 |
| CASE WHEEL LOADER (BEFORE S/N JEE0135500) | 621D | 2000 – 2002 |
| CASE WHEEL LOADER - NA (S/N JEE0135501 & AFTER) | 621D | 2002 – 2007 |
| WHEEL LOADER TIER 3 (NA) | 621E | 2007 – 2012 |
| 4WD MOTOR GRADER (LIVERY) - TIER 4 | 836C | 2017 – 2022 |
| 4WD MOTOR GRADER MY20 - STAGE V | 836C | 2020 – 2022 |
| 4WD MOTOR GRADER (LIVERY) - TIER 4 | 856C | 2017 – 2022 |
| WHEEL LOADER TIER 3 (NA/EU) | 921E | 2007 – 2011 |