Tube Union

Enhance your heavy equipment performance with the Case Construction Tube Union #144121. Designed for durability and reliability, this essential component ensures optimal fluid transfer in your machinery, keeping your operations running smoothly and efficiently. Perfect for Case equipment maintenance and repairs.

Compatible equipment

This part fits CASE CRUZ-AIR WHEELED EXCAVATOR, BACKHOE, CASE SKID KING WHEEL LOADER, BACKHOE FOR 450 450B 850 850B AND W14, CASE LOADER BACKHOE ATTACHMENTS, DROTT SERIES-D CRAWLER EXCAVATOR (S/N 6266131 & AFTER), LOADER AND BACKHOE FOR 580CK SERIES B, CASE LOADER/LANDSCAPER TRACTOR, DROTT SERIES-D CRAWLER EXCAVATOR (S/N 6270716 & AFTER), DROTT SERIES-A CRAWLER EXCAVATOR, SKID STEER - 410 NA BSN N7M480924 410 EU BSN N7M468736, SKID STEER - SERIES 3 410 NA ASN N7M480924 410 EU ASN N7M468736, SKID STEER - 420NA BSN N7M466710 420EU BSN N8M466713, SKID STEER - TIER 3 420NA N7M466710 420EU ASN N8M466713, COMPACT TRACK LOADER - BSN N7M455401, COMPACT TRACK LOADER - SERIES 3 ASN N7M455401, SKID STEER - SERIES 3 ASN 430 NA N7M479683 430 EU N7M479546, SKID STEER BSN 430 NA N7M479683 430 EU N7M479546, SKID STEER - 440 NA BSN N8M474469 440 EU BSN N8M407542, SKID STEER - SERIES 3 440 NA ASN N8M474469 440 EU ASN N8M407542, COMPACT TRACK LOADER - BSN N7M483467, COMPACT TRACK LOADER - SERIES 3 ASN N7M483467, CASE CONSTRUCTION KING LOADER BACKHOE, CASE CONSTRUCTION KING LOADER BACKHOE AFTER S/N 3739160 (EUROPE), CASE CONSTRUCTION KING LOADER BACKHOE BEFORE S/N 3739160 (EUROPE), LOADER BACKHOE (NORTH AMERICA), CASE SUPER-D CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C5040000, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C508000, TURBO LOADER BACKHOE, LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, SERIES 2 LOADER BACKHOE TIER 2 (NA) - ASN N4C309000, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C508500, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N7C431854, CASE SERIES-B CONSTRUCTION KING LOADER BACKHOE (S/N 9102282 TO 9103968, CASE SERIES-B LOADER BACKHOE (S/N 9103967 TO 9105879), CASE SERIES-C CONSTRUCTION KING LOADER BACKHOE (S/N 910600 TO 9111008), CASE TRENCHER, CASE WHEEL LOADER (NORTH AMERICA), CASE TURBO TRENCHER, TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION), CASE CRAWLER EXCAVATOR, CASE SKID STEER LOADER, MAXI-SNEAKER CABLE LAYER, SERIES-B MINI-SNEAKER CABLE LAYER, CASE TRENCHER W/LOADER BACKHOE, SNEAKER C - 25 4XP TRENCHER, DAVIS FLEETLINE 30 4 TRENCHER, DAVIS FLEETLINE 40 4 TRENCHER including models 1085B, 1086B, 26D, 300C, 35, 35A, 35C, 35C WL, 35WL, 380CK, 40, 400C, 40EC, 40YC, 410, 420, 420CT, 430, 440, 440CT, 480D, 480E, 480F, 480F LL, 580C.

Frequently asked questions

What is the part number?

The manufacturer part number is 144121.

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.