O-ring O Ring

Enhance the performance of your heavy equipment with the Case Construction O-Ring #A41856. Designed for durability and precision, this essential part ensures a reliable seal, preventing leaks and maintaining optimal functionality in demanding environments. Perfect for your construction needs!

Compatible equipment

This part fits CASE CRAWLER EXCAVATOR, CASE TORQUE CONVERTER CRAWLER TRACTOR (S/N 7110300 & AFTER), CASE CRAWLER TRACTOR, CASE CRAWLER TRACTOR (NORTH AMERICA), CASE LOGGER CRAWLER EXCAVATOR, CASE FELLER/BUNCHER CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR (NORTH AMERICA), CASE CRAWLER DOZER (TIER 1), CASE SKID KING WHEEL LOADER, DROTT ENGINES FOR 35 CRAWLER - B SERIES, CASE ENGINE, DROTT SERIES-D CRAWLER EXCAVATOR (S/N 6266131 & AFTER), DROTT SERIES-D CRAWLER EXCAVATOR (S/N 6270716 & AFTER), DROTT SERIES-E CRAWLER EXCAVATOR (S/N 6271140 & AFTER), CASE CABLE LAYER W/301B ENGINE (PRIOR TO S/N 3058169), CASE CABLE LAYER W/336 ENGINE (S/N 3058169 & AFTER), CASE SERIES-E CRAWLER EXCAVATOR (S/N 6280543 & AFTER), CASE SERIES-B LOADER BACKHOE (S/N 9103967 TO 9105879), CASE SERIES-C CONSTRUCTION KING LOADER BACKHOE (S/N 910600 TO 9111008), CASE SERIES-C CONSTRUCTION KING LOADER BACKHOE (S/N 9111009 & AFTER), CASE CONSTRUCTION KING LOADER BACKHOE, CASE WHEEL LOADER (NORTH AMERICA), CASE CRAWLER TRACTOR (S/N 7073469 & AFTER) (NORTH AMERICA), CASE CRAWLER EXCAVATOR (S/N 6203751 & AFTER), CASE WHEEL LOADER (S/N 9811801 & AFTER), CASE ARTICULATED WHEEL LOADER (PRIOR TO S/N 9119672) (NORTH AMERICA), CASE UNIT LOADER W/POD CAB (S/N 9119672 & AFTER) (NORTH AMERICA), CASE UNIT LOADER W/POD CAB (S/N 9119672 & AFTER), CASE ARTICULATED WHEEL LOADER (PRIOR TO S/N 9119672), CASE ARTICULATED WHEEL LOADER (NORTH AMERICA), CASE WHEEL LOADER (S/N 9123140 & AFTER) (NORTH AMERICA), CASE WHEEL LOADER, CASE WHEEL LOADER (PRIOR TO S/N 9123140), CASE WHEEL LOADER W/POD CAB - NEW YORK STATE SPECIAL, CASE ARTICULATED WHEEL LOADER, CASE ARTICULATED WHEEL LOADER (PRIOR TO S/N 9120696), CASE ARTICULATED WHEEL LOADER W/POD CAB (S/N 9120696 & AFTER), CASE WHEEL LOADER (PRIOR TO S/N 17754000), CASE WHEEL LOADER (S/N 9811301 & AFTER) (NORTH AMERICA) including models 1080, 1080B, 1150, 1150B, 1150C, 1150D, 1150E, 1150G, 1155D, 1155E, 1187, 1187B, 1187C, 125B, 1280, 1280B, 1450, 1450B, 1455B, 1550, 1650K, 300C, 336B, 336DBT, 35.

Frequently asked questions

What is the part number?

The manufacturer part number is A41856.

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.

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.