Fitting 90 Degree Elbow

Enhance your heavy equipment performance with the Case Construction Fitting 90 Degree Elbow #9991973. Designed for durability and precision, this essential component ensures optimal fluid flow and reliable connections in your machinery. Perfect for maintaining peak operational efficiency.

Compatible equipment

This part fits COMPACT WHEEL LOADER STD TC - TIER 4, COMPACT WHEEL LOADER STD ZB - TIER 4, CASE CRAWLER TRACTOR, CRAWLER DOZER - TIER 4B, CRAWLER DOZER - TIER 4A, PLANTER 23 ROW 15IN SPACING SPLIT ROW PIVOT TRANSPORT, PLANTER 24 ROW 15IN SPACING SPLIT ROW PIVOT TRANSPORT, PLANTER 24 ROW 20IN SPACING PIVOT TRANSPORT, PLANTER 24 ROW 22IN SPACING PIVOT TRANSPORT, PLANTER 31 ROW 15IN SPACING SPLIT ROW PIVOT TRANSPORT, PLANTER 32 ROW 15IN SPACING SPLIT ROW PIVOT TRANSPORT, PLANTER 12 ROW 2 POINT HITCH FRONT FOLD, PLANTER 16 ROW 2 POINT HITCH FRONT FOLD, PLANTER 16 ROW DRAW BAR FRONT FOLD, PLANTER 24 ROW 2 POINT HITCH FRONT FOLD, PLANTER 24 ROW DRAW BAR FRONT FOLD, PLANTER 24 ROW 30IN SPAC FRONT FOLD, PLANTER 32 ROW 30IN SPAC FRONT FOLD, PLANTER 36 ROW 20IN SPAC FRONT FOLD, PLANTER 36 ROW 22IN SPAC FRONT FOLD, PLANTER 36 ROW 30IN SPAC FRONT FOLD, PLANTER 47 ROW 15IN SPAC FRONT FOLD, COMPACT WHEEL LOADER HS ZB - TIER 4, 3 CYL UTILITY TRACTOR, DRAPER HEADER, 3 CYL TRACTOR LOADER, 3 CYL TRACTOR LOADER BACKHOE, 30FT DRAPER FLEX HEADER (INT), 35FT DRAPER FLEX HEADER (INT), 40FT DRAPER FLEX HEADER (INT), 45FT DRAPER FLEX HEADER (INT), 30FT DRAPER RIGID HEADER (INT), 35FT DRAPER RIGID HEADER (INT), 40FT DRAPER RIGID HEADER (INT), 45FT DRAPER RIGID HEADER (INT), AXIAL-FLOW COMBINE (NA), COMBINE - TIER 4 COMMON CAB, COMBINE TIER 4, COMBINE - TIER 4 (NA), COMBINE - TIER 4B (NA), COMBINE - TIER 4B (NA) ASN - YFG014001, MY18 COMBINE TIER 4B (NA), COMBINE - TIER 3, MY20 COMBINE TIER 4B (NA), MY21 COMBINE TIER 4B (NA), CASE WHEEL LOADER (BEFORE S/N JEE0135500), CASE WHEEL LOADER (S/N JEE0135501 & AFTER) - ENGINE SUPPLEMENT, CASE WHEEL LOADER - NA (S/N JEE0135501 & AFTER), 4 CYL TRACTOR LOADER BACKHOE, BACKHOE LOADER (LIVERY) - TIER 3 NRC, BACKHOE LOADER (LIVERY) - TIER 4B, BACKHOE LOADER - TIER 3 NRC, BACKHOE LOADER - TIER 4A - FROM PIN NCC560000, BACKHOE LOADER - TIER 4B, BACKHOE LOADER 2WD - TIER 3 NRC - MY18, BACKHOE LOADER 2WD - TIER 3 NRC - MY19, BACKHOE LOADER 2WD - TIER 4B - MY18, BACKHOE LOADER 2WD - TIER 4B - MY19, BACKHOE LOADER 4WD - TIER 3 NRC - MY18, BACKHOE LOADER 4WD - TIER 3 NRC - MY19, BACKHOE LOADER 4WD - TIER 4B - MY18, BACKHOE LOADER 4WD - TIER 4B - MY19, LOADER BACKHOE (TIER 3), LOADER BACKHOE - TIER 3 NRC, BACKHOE LOADER - TIER 4A - FROM PIN NCC564000, LOADER BACKHOE - TIER 3, BACKHOE LOADER (LIVERY) - WIDE TRACK - TIER 3 NRC, BACKHOE LOADER (LIVERY) - WIDE TRACK - TIER 4B, BACKHOE LOADER - WIDE TRACK - TIER 4B, BACKHOE LOADER 4WD - WIDE TRACK - TIER 3 NRC - MY18, BACKHOE LOADER 4WD - WIDE TRACK - TIER 3 NRC - MY19, BACKHOE LOADER 4WD - WIDE TRACK - TIER 4B - MY18, BACKHOE LOADER 4WD - WIDE TRACK - TIER 4B - MY19, BACKHOE LOADER WIDE TRACK - TIER 3, BACKHOE LOADER WIDE TRACK - TIER 3 NRC, BACKHOE LOADER WIDE TRACK - TIER 4A, BACKHOE LOADER - TIER 4A, MY18 COMBINE TIER 4B (EU), CASE IH COTTON EXPRESS COTTON PICKER, GRAPE HARVESTER, COMBINE - TIER 4B (NA) - 2014, COMBINE - TIER 4B (NA) - 2016, GRAPE HARVESTER - STANDARD VERSION, GRAPE HARVESTER - GRANDE EXPORT VERSION, GRAPE HARVESTER - HIGHER VERSION, GRAPE HARVESTER - SIDE HOPPER VERSION, GRAPE HARVESTER - GRANDE EXPORT VERSION., CASE IH COTTON PICKER, REVELATION COMBINE - TIER 4B (NAFTA), FORAGE HARVESTER, WHEEL LOADER (REV 05/2005), ACTIVEDRIVE TRACTOR - TIER 4B (MADE IN BASILDON), MULTICONTROLLER ACTIVEDRIVE 8 TRACTOR - STAGE V (MADE IN BASILDON), 4WD TRACTOR, AFS CONNECT - QUADTRAC T4B PST (NA), TRACTOR - MY17 T4B CVT (NA), TRACTOR - MY17 T4B PST (NA), TRACTOR 4WD - TIER 4B (NA), TRACTOR (SCRAPER) - MY17 T4B PST (NA), AFS CONNECT - QUADTRAC SCRAPER T4B PST (NA), 4WD TRACTOR (ASN Z6F105001) (NA), AFS CONNECT - HD WHEEL T4B PST (NA), AFS CONNECT - SCRAPER WHEEL - T4B PST (NA), TRACTOR (HD) - MY17 T4B PST (NA), AFS CONNECT - SCRAPER WHEEL T4B PST (NA), CASE IH 4WD TRACTOR, CASE IH 4WD TRACTOR (AFTER S/N JEE0099501), CASE IH 4WD TRACTOR (BSN JEE0099501), CASE IH 4WD TRACTOR (BTW Z6F100023 - Z6F105001), DYNAMIC COMMAND TRACTOR - STAGE V (NAFTA), DYNAMIC COMMAND TRACTOR - STAGE V, TRACTOR DUAL CLUTCH - TIER 4B, TRACTOR (SCRAPER WHEEL (TRACK READY)) - MY17 T4B PST (NA), TRACTOR (TRACK READY) - MY17 T4B PST (NA), PLM INTELLIGENCE - HD WHEEL T4B PST (NA), PLM INTELLIGENCE - SCRAPER WHEEL T4B PST (NA), PLM INTELLIGENCE - TRACK READY T4B PST (NA), TRACTOR, 4WD TRACTOR ASN, 4WD TRACTOR ASN Z7F204001, 4WD TRACTOR BTW Z6F200013 - Z7F204001, 6 CYL BIDIRECTIONAL VERSATILE TRACTOR, BIDIRECTIONAL TRACTOR, TRACTOR - ACTIVEDRIVE - STAGE V (NA), ALSACE GRAPE HARVESTER including models 121F, 1550, 1650M LGP PAT, 1650M WT/LGP, 1650M XLT, 1650M XLT BD, 1650M XLT PAT, 2050M LGP BD, 2050M LGP PAT, 2050M LT, 2050M LT BD, 2050M LT PAT, 2050M WT/LGP, 2050M XLT BD, 2050M XLT PAT, 2140, 2150, 2160, 21F, 221F, 250C, 260C, 3152, 3162, 321F.

Frequently asked questions

What is the part number?

The manufacturer part number is 9991973.

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.