O-ring

Compatible equipment

This part fits 8HP GEAR DRIVE TILLER, 5HP CHAIN DRIVE TILLER, 5HP GEAR DRIVE TILLER, 3.5HP GEAR DRIVE TILLER, 2-STAGE 26'''' 5HP SNOW THROWER, 2-STAGE 26'''' 8HP SNOW THROWER, 2-STAGE 26'''' 8HP SNOW THROWER - 1984, 2-STAGE 26'''' 8HP SNOW THROWER - 1986, 55 - FIAT CRAWLER TRACTOR, INTERNATIONAL DIESEL TRACTOR, INTERNATIONAL 66 SERIES DIESEL TRACTOR, CASE CRUZ-AIR WHEELED EXCAVATOR, 2 CYL COMPACT TRACTOR, SPEEDROWER SELF-PROPELLED WINDROWER, CASE TORQUE CONVERTER CRAWLER TRACTOR (BEFORE S/N 7109000), CASE TORQUE CONVERTER CRAWLER TRACTOR (S/N 7109000 TO 7110299), CASE TORQUE CONVERTER CRAWLER TRACTOR (S/N 7110300 & AFTER), CASE CRAWLER TRACTOR, CASE CRAWLER TRACTOR (NORTH AMERICA), CASE LOGGER CRAWLER EXCAVATOR, FARMALL DIESEL TRACTOR, NH FARM LOADER, SELF-PROPELLED HAYBINE MOWER CONDITIONER, VERSATILE 4WD TRACTOR, VERSATILE SERIES-2 4WD TRACTOR - 1977, VERSATILE SERIES-2 4WD TRACTOR - 1981, VERSATILE TRACTOR LOADER ATTACHMENTS, VERSATILE TRACTOR - 1981, VERSATILE TRACTOR - 1982, NH SP FORAGE HARVESTER, FARMALL TRACTOR, UTILITY BACKHOE, INTERNATIONAL INDUSTRIAL DIESEL TRACTOR, LOADER AND BACKHOE, FARMALL GAS TRACTOR, INTERNATIONAL SERIES-A TRACTOR (EUROPE), INTERNATIONAL SERIES-A TRACTOR (NORTH AMERICA), BACKHOE, LOADER, INTERNATIONAL INDUSTRIAL TRACTOR, INTERNATIONAL UTILITY TRACTOR, CASE CRAWLER TRACTOR (S/N 3019001 TO 3023000), CASE CRAWLER TRACTOR (S/N 3023001 TO 3032301), CASE CRAWLER TRACTOR (S/N 3032301 TO 3039619), CASE CRAWLER TRACTOR (S/N 3039619 & AFTER), BACKHOE AND LOADER FOR 530CK TRACTORS, BACKHOE AND LOADER, BACKHOE FOR 310G AND 450 CRAWLER, BACKHOE FOR 580CK, BACKHOE FOR W SERIES RIGID LOADERS, BACKHOE FOR 680CK TRACTOR, BACKHOES FOR CRAWLER MODELS 750 850 1150, INTERNATIONAL UTILITY DIESEL TRACTOR, INTERNATIONAL UTILITY GAS TRACTOR, SERIES A INTERNATIONAL LOADER TRACTOR, LAVERDA RICE COMBINE, INTERNATIONAL HYDROSTATIC TRACTOR, SERIES - CASE GAS & DIESEL TRACTORS (S/N 8106131 & AFTER), SERIES - FARMALL DIESEL TRACTORS, SERIES - FARMALL GAS TRACTORS, 3 CYL ORCHARD TRACTOR, DROTT SERIES-B FELLER/BUNCHER CRAWLER EXCAVATOR, DROTT SERIES-B CRAWLER EXCAVATOR, INTERNATIONAL 4WD DIESEL TRACTOR, LOADER (S/N 4065701 THRU 4077628), CASE CRAWLER TRACTOR (S/N 3012301 & AFTER), 4 CYL ORCHARD TRACTOR, CASE CRAWLER TRACTOR (PRIOR TO S/N 3038436), CASE CRAWLER TRACTOR (S/N 3038436 TO 3060306), INTERNATIONAL GAS TRACTOR, CASE WHEEL TRACTOR W/LOADER BACKHOE, TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION), CASE TERRATRAC CRAWLER TRACTOR (DIESEL), CASE TERRATRAC GASOLINE CRAWLER TRACTOR, CASE IH COTTON EXPRESS COTTON PICKER, MODULE EXPRESS COTTON PICKER, MODULE EXPRESS, CASE TRENCHER, CASE CONSTRUCTION KING LOADER BACKHOE, INTERNATIONAL DIESEL TRACTOR (EUROPE), INTERNATIONAL DIESEL TRACTOR (NORTH AMERICA), AXIAL-FLOW COMBINE, INTERNATIONAL TRACTOR, CASE IH MAGNUM TRACTOR (NORTH AMERICA), COMBINE - TIER 4 COMMON CAB, CASE IH MAGNUM TRACTOR, 86 LP DT - FIAT TRACTOR, 86F DT - FIAT TRACTOR, COMBINE - TIER 4, COMBINE - TIER 4B (NA) - 2016, COMBINE - TIER 4B (NA) ASN YFG230001, COMBINE - TIER 4B (NA) BSN YFG230000, MY18 COMBINE TIER 4B (NA), MY19 COMBINE TIER 4B (NA), MY20 COMBINE TIER 4B (NA), CASE CRAWLER TRACTOR (AFTER S/N 7070351), INTERNATIONAL 66 SERIES TRACTOR, INTERNATIONAL HARVESTER COMBINE, MY18 COMBINE TIER 4B REDEKOP CHOPPER OPTION (NA), CASE CRAWLER TRACTOR (S/N 7073469 & AFTER) (NORTH AMERICA), CASE CRAWLER TRACTOR (UP TO S/N 7073468) (NORTH AMERICA), CASE LONG TRACK CRAWLER TRACTOR, CASE CRAWLER EXCAVATOR, NH PULL TYPE FORAGE HARVESTER, SPEEDROWER WINDROWER, CASE IH STEIGER 4WD TRACTOR (FROM S/N 17900650 TO JCB0003599), CASE IH STEIGER 4WD TRACTOR (PRIOR TO S/N 17900650), CASE IH STEIGER 4WD TRACTOR (S/N JCB0003600 & AFTER), CASE IH STEIGER 4WD TRACTOR (AFTER S/N 17900649), ST826A SNOW THROWER ELECTRIC STARTER KIT, SUGAR CANE HARVESTER (BRAZIL) - ASN 400004, 361 - 6 CYLINDER DIESEL ENGINE, 407 - 6 CYLINDER DIESEL ENGINE, CRAWLER DOZER, 361 - 6 CYLINDER TURBO DIESEL ENGINE, 407 - 6 CYLINDER TURBO DIESEL ENGINE, DUAL COMMAND TRACTOR - TIER 4B (NA), TRACTOR HI-LO - TIER 4B (NA), TRACTOR HI-LO - TIER 4A (NA) - S/N ZXXV0XXXX, CRAWLER DOZER (N.A. VERSION), CRAWLER DOZER (N.A. VERSION)(S/N 061640 & AFTER), MOTOR GRADER, CRAWLER LOADER, WHEEL LOADER -, FORAGE HARVESTER - TIER 4 (NA), FORAGE HARVESTER, WHEEL LOADER, INTERNATIONAL HYDROSTATIC DRIVE TRACTOR (EU), INTERNATIONAL HYDROSTATIC DRIVE TRACTOR (NA), CASE IH FARM LOADER, TRACTOR (NA), TRACTOR - TIER 4A, AFS CONNECT - WHEEL T4B PST (NA/ROW), TRACTOR - TIER 4B PST (ROW), TRACTOR (EMERGING MARKET), TRACTOR - TIER 3 PST (CHINA), AFS CONNECT - ROWTRAC T4B PST (NA/ROW), ROWTRAC TRACTOR - TIER 4B PST, SNEAKER - SERIES-C TRENCHER, CASE IH MAGNUM TRACTOR (P.I.N. JJA0105000 & AFTER), CASE IH MAGNUM TRACTOR (PRIOR TO P.I.N. JJA0105000), CASE IH MAGNUM TRACTOR NA, 2-STAGE 24'''' 5HP SNOW THROWER, 2-STAGE 26'''' 5HP SNOW THROWER - 1980, 2-STAGE 26'''' 8HP SNOW THROWER - 1980, TRACTOR HI-LO - TIER 4A (NA) - S/N ZXXT0XXXX, PLM INTELLIGENCE - WHEEL T4B PST (NA/ROW), PLM INTELLIGENCE - SMARTTRAX T4B PST (NA/ROW), SMARTTRAX TRACTOR - TIER 4B CVT, SMARTTRAX TRACTOR - TIER 4B PST, PLM INTELLIGENCE - HD WHEEL T4B CVT (NA), PLM INTELLIGENCE - HD WHEEL T4B PST (NA), PLM INTELLIGENCE - SCRAPER WHEEL T4B CVT (NA), PLM INTELLIGENCE - SCRAPER WHEEL T4B PST (NA), TRACTOR (HD) - MY17 T4B PST (NA), TRACTOR (SCRAPER) - MY17 T4B PST (NA), TRACTOR (TRACK READY) - MY17 T4B PST (NA), TRACTOR (NORTH AMERICA), CASE UNIT LOADER, CASE WHEEL LOADER, CASE ARTICULATED WHEEL LOADER, CASE WHEEL LOADER (PRIOR TO S/N 17754000) including models 09GN1005, 09GN1013, 09GN1023, 09GN1094, '09GN5240, '09GN5241, '09GN5324, 100, 1026, 1066, 1085B, 1085C, 1086, 1086B, 1100, 1150, 1150B, 1150C, 1150D, 1150E, 1155D, 1155E, 1187, 1187B, 1206.

Frequently asked questions

What is the part number?

The manufacturer part number is 66805.

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.