Support Brace

Enhance the stability of your Case construction equipment with the Case Construction Support Brace #J903089. Designed for durability and precision, this essential part ensures optimal performance and safety on the job site, making it a must-have for heavy equipment operators.

Compatible equipment

This part fits CASE CRUZ-AIR WHEELED EXCAVATOR, CASE LONG TRACK/TURNABLE LEVELER CRAWLER EXCAVATOR, CASE HYDRAULIC CRAWLER EXCAVATOR (S/N 17001 & AFTER), CASE CRAWLER TRACTOR, CASE CRAWLER EXCAVATOR (NORTH AMERICA), CASE CRAWLER EXCAVATOR - DONG AH CONTRACT, CASE CRAWLER EXCAVATOR - ELECTRIC MOTOR (550V), CASE CRAWLER EXCAVATOR - SUPPLEMENT (EUROPE), CASE EXCAVATOR - ATTACHMENTS (EUROPE), CASE EXCAVATOR - ELECTRO-MAGNET, CASE EXCAVATOR - ELECTRO-MAGNET (EGYPT), CASE EXCAVATOR - HYDRAULIC PICK HAMMER, CASE EXCAVATOR - RAISED CAB AND CAB GUARD, CASE EXCAVATOR - REHANDLING ATTACHMENT, CASE EXCAVATOR - TELESCOPIC CAB - CRAWLER, CASE EXCAVATOR - TELESCOPIC CAB - WHEELED, CASE EXCAVATOR - TELESCOPIC DIPPERSTICK, CASE WHEELED EXCAVATOR (S/N 9900-) (S/N 25252-) (S/N 27001-), CASE UNI-LOADER SKID STEER LOADER, CASE UNI-LOADER SKID STEER LOADER (EUROPE), CASE UNI-LOADER SKID STEER LOADER (NORTH AMERICA), CASE IH SPRAYER, PATRIOT SPRAYER, CASE SKID STEER LOADER, CASE POWER UNIT, CASE IH IRRIGATION POWER UNIT, CASE LONG TRACK CRAWLER TRACTOR, CASE CONSTRUCTION KING LOADER BACKHOE, CASE IH DIESEL TRACTOR (EUROPE), CASE IH MAXXUM TRACTOR (NORTH AMERICA), CASE IH DIESEL TRACTOR, CASE IH MAXXUM TRACTOR, IND - CASE CRAWLER TRACTOR, LOADER LANDSCAPER, CASE CONSTRUCTION KING LOADER BACKHOE (EUROPE), LOADER BACKHOE (NORTH AMERICA), LOADER BACKHOE (NORTH AMERICA) (ASN JJG0020000), CASE CONSTRUCTION KING LOADER BACKHOE (BRAZIL), SERIES 2 LOADER BACKHOE - ASN JJG0239360, SUPER L TIER 3 LOADER BACKHOE (BRAZIL), TIER 2 LOADER BACKHOE (BRAZIL), TIER 3 LOADER BACKHOE (BRAZIL), CASE LOADER BACKHOE (S/N CGG0150004 & AFTER), CASE POWERSHIFT LOADER BACKHOE, CASE SERVOPOWER LOADER BACKHOE, CASE LOADER BACKHOE, CASE BACKHOE LOADER (EUROPE), LOADER BACKHOE (BRAZIL), LOADER BACKHOE (NA) - ASN JJG0285001, CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE EU, LOADER BACKHOE - BSN JJG0239361, CASE LOADER BACKHOE (S/N CGG0160030 & AFTER), CASE CONSTRUCTION KING FORKLIFT, CASE FORKLIFT, TURBO LOADER BACKHOE, LOADER BACKHOE, CASE SERVOPOWER LOADER BACKHOE (S/N CGG0200001 & AFTER), SERIES 2 LOADER BACKHOE - ASN JJG0210575, CASE SUPER-LE LOADER BACKHOE (S/N CGG0190001 & AFTER), CASE TURBO HORIZONTAL DIRECTIONAL DRILLING MACHINE, CASE WHEEL LOADER (EUROPE), CASE WHEEL LOADER (PRIOR TO S/N JAK0021701) (NORTH AMERICA), CASE WHEEL LOADER (S/N JAK0021701 & AFTER) (NORTH AMERICA), SERIES 1 CRAWLER - 07/01/2002 - 01/31/2005, CASE DIESEL POWER UNIT, CASE TRENCHER, TRENCHER SUPPLEMENT (EUROPEAN HOMOLOGATION), CASE SERIES-2 TELESCOPIC HANDLER, CASE TELESCOPIC HANDLER, CASE CRAWLER EXCAVATOR (PRIOR TO S/N CGG0011601), CASE WHEEL LOADER (NORTH AMERICA) including models 1085B, 1085C, 1086B, 1088, 1088CK, 1150E, 1150G, 1150H, 1155E, 125B, 1840, 1845C, 2500SP, 3000SP, 3150, 3185, 3210, 40XT, 4390, 4390T, 4391, 4391T, 4391TA, 450C, 455C.

Frequently asked questions

What is the part number?

The manufacturer part number is J903089.

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.