Seal Oil

Enhance your heavy equipment’s performance with Case Construction Seal Oil #A23903. This high-quality seal oil ensures optimal lubrication and protection for hydraulic systems, extending the life of your machinery and improving efficiency on the job site.

Compatible equipment

This part fits CASE COMFORT KING DRAFT-O-MATIC TRACTOR, CASE AGRI-KING TRACTOR (PRIOR TO S/N 8675001), CASE AGRI-KING TRACTOR (S/N 8675001 & AFTER), CASE AGRI-KING DIESEL TRACTOR, CASE IH ADVANCED SEED METER PLANTER, CASE IH PIVOT TRANSPORT ASM PLANTER, RIGID MOUNTED PLANTER EARLY RISER SERIES, RIGID TRAILING PLANTER EARLY RISER SERIES, 6 ROW 30'''' FOLDING HITCH, 6 ROW 30'''' RIGID HITCH, 8 ROW 30'''' FOLDING HITCH, 8 ROW 30'''' RIGID HITCH, MOUNTED STACKER PLANTER EARLY RISER SERIES, FRONT FOLD TRAILING PLANTER EARLY RISER SERIES, CASE IH AXIAL-FLOW COMBINE (NORTH AMERICA), INTERNATIONAL HARVESTER COMBINE (EUROPE), CASE IH AXIAL-FLOW COMBINE, CASE SIDE DELIVERY RAKE, CASE CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-D CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, CASE CONSTRUCTION KING FORKLIFT, CASE COMFORT KING DRAFT-O-MATIC TRACTORS (S/N 8253501 & AFTER), SERIES - CASE COMFORT KING DRAFT-O-MATIC TRACTORS (S/N 8253501 & AFTER), CASE AGRI-KING TRACTOR (PRIOR TO P.I.N. 8675001), CASE WHEEL LOADER, CASE WHEEL LOADER (NORTH AMERICA), SERIES - CASE COMFORT KING TRACTOR (ASN 8258382), SERIES - CASE COMFORT KING WESTERN SPECIAL TRACTOR (S/N 8258382 & AFTER), CASE IH TRAILING PLANTER, CASE IH MOUNTED PLANTER, 1325 - STEIGER PANTHER 1000-SERIES POWERSHIFT TRACTOR, 1360 - STEIGER PANTHER 1000-SERIES POWER SHIFT TRACTOR, 1400 - STEIGER PANTHER 1000-SERIES POWERSHIFT TRACTOR, 1360 - STEIGER PANTHER 1000-SERIES POWERSHIFT TRACTOR, STEIGER BEARCAT SERIES III TRACTOR, STEIGER COUGAR SERIES III TRACTOR, STEIGER COUGAR SERIES III AUTOMATIC TRACTOR, RIGID TRAILING PLANTER, PIVOT - TRANSPORT PLANTER, STEIGER SERIES III BEARCAT TRACTOR, STEIGER SERIES III COUGAR TRACTOR, STEIGER SERIES III PANTHER TRACTOR, PANTHER 1000-SERIES POWERSHIFT TRACTOR, SERIES III BEARCAT TRACTORS - 1976, SERIES III COUGAR TRACTORS, SERIES III PANTHER TRACTORS including models 1030, 1070, 1090, 1170, 1175, 1200, 1200PT, 1210, 1220, '1225 EARLY RISER, 1230, 1250, 1440, 1460, 1480, 401, 580D, 580E, 580SD, 580SE, 584D, 585D, 586D, 730 SERIES, 770.

Frequently asked questions

What is the part number?

The manufacturer part number is A23903.

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.

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.