Back-up Ring B.u.

Enhance your heavy equipment’s performance with the Case Construction Back-Up Ring B.U. #189122A1. Designed for durability and reliability, this essential part ensures optimal sealing and functionality, keeping your machinery running smoothly in demanding conditions. Perfect for Case equipment maintenance.

Compatible equipment

This part fits CASE IH FRONT END LOADER, SKID STEER TIER 2 P.I.N. N7M458414 & PRIOR, SKID STEER TIER 3 P.I.N. N7M464019 & AFTER, COMPACT TRACK LOADER - BSN N7M464019, COMPACT TRACK LOADER - SERIES 3 ASN N7M464019, LOADER BACKHOE - BSN JJG0239361, CASE SKID STEER LOADER, CASE SKID STEER LOADER - ASN JAF0318922 (NA) JAF0352169 (EU), MOTOR GRADER - DIRECT DRIVE - TIER 3 (BR), MOTOR GRADER - TORQUE CONVERTER - TIER 3 (BR), MOTOR GRADER TIER 3 (NEW CAB), MOTOR GRADER - NEW CAB (BRAZIL), SKID STEER ENGINE - N844, SKID STEER LOADER, SKID STEER LOADER - NRC, SKID STEER LOADER - TIER 4B, SKID STEER LOADER - TIER 3 - ROW, SKID STEER LOADER - TIER 4F - NA including models 2250, 450, 450CT, 580SL, 75XT, 845B, 865B, 865B AWD, 885B, 885B AWD, 90XT, F140B, F170B, F200B, L213, L215, L218, L318, L320, RG140.B, RG170.B, RG200.B, SR130, SR150, SR175.

Frequently asked questions

What is the part number?

The manufacturer part number is 189122A1.

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.