Back-up Ring
Case Construction ·10 Fitments
| Machine | Model | Years |
|---|---|---|
| CASE CRAWLER EXCAVATOR | 9040 | 1993 – 1994 |
| CRAWLER EXCAVATOR TIER 3 (NA) | CX240B | 2007 – 2016 |
| CRAWLER EXCAVATOR TIER 3 (NA) | CX240BLR | 2007 – 2008 |
| CRAWLER EXCAVATOR TIER 3 (NA) | CX290B | 2007 – 2015 |
| LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA) | CX290D LC MH | 2017 – 2022 |
| CRAWLER EXCAVATOR TIER 4 (NA) | CX300C | 2011 – 2022 |
| LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA) | CX300D LC | 2015 – 2022 |
| CASE CRAWLER EXCAVATOR (NORTH AMERICA) | CX330 | 2001 – 2005 |
| CASE CRAWLER EXCAVATOR (EUROPE) | CX350 | 2005 – 2006 |
| CRAWLER EXCAVATOR TIER 3 (NA) | CX350B | 2008 – 2022 |
Enhance the performance of your heavy equipment with the Case Construction Back-Up Ring #155120A1. Designed for durability and reliability, this essential part ensures optimal sealing and efficiency in hydraulic systems, keeping your machinery running smoothly.
Compatible equipment
This part fits CASE CRAWLER EXCAVATOR, CRAWLER EXCAVATOR TIER 3 (NA), LONG CARRIAGE - CRAWLER EXCAVATOR - TIER 4B (NA), CRAWLER EXCAVATOR TIER 4 (NA), CASE CRAWLER EXCAVATOR (NORTH AMERICA), CASE CRAWLER EXCAVATOR (EUROPE) including models 9040, CX240B, CX240BLR, CX290B, CX290D LC MH, CX300C, CX300D LC, CX330, CX350, CX350B.
Frequently asked questions
What is the part number?
The manufacturer part number is 155120A1.
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
- 155120A1
- Internal SKU
- IC:155120A1
- Brand
- CASE CONSTRUCTION
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.09 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.