Reducer
| Machine | Model | Years / S/N |
|---|---|---|
| Cotton Picker | CPX420 | — |
| Cotton Picker | 420 TIER 3 | — |
| Cotton Picker | 420 | — |
| Loader | 921C | — |
| Loader | 821C | — |
| Cotton Picker | 2555 | — |
| Tractor | STEIGER ST225 BEARCAT | — |
| Tractor | STEIGER BEARCAT | — |
| Trencher | 560 | — |
| Trencher | 460 | — |
OEM Reducer Hex 3/4" X 1/2" Npt - Return To Engine Parts Used With Detroit Diesel #221 - OEM Cooling or Charging System Repair Part for Heavy Equipment This service part restores OEM functionality after wear leads to overheating, charging issues, belt wear, or engine-service replacement needs, often accompanied by starter failure, alternator issues, airflow restriction, and heat-related service problems. Used in repair departments handling OEM engine repair part, cooling-system service, charging repair, and Case equipment maintenance requirements.
More Details
Part Number: 221
Application: OEM engine or cooling service part for maintenance work involving heat control, airflow, charging, or start-system repair.
Key Features:
- Designed to replace engine-related parts affected by wear, heat, or service failure
- Supports repair of overheating, belt slip, weak charging, and no-start issues
- OEM-style fit for efficient installation during engine service work
Fits Case Models: Compatible with various Case construction equipment models - verify fitment before ordering
Replaces: Refer to manufacturer cross-reference if applicable
WARNING:For California residents — Cancer and Reproductive Harm. www.P65Warnings.ca.gov
- Manufacturer part number
- 221-93
- Brand
- Case Construction
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.1 lb
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.
All 179 fitments
| Machine | Model | Years / S/N |
|---|---|---|
| Cotton Picker | CPX420 | — |
| Cotton Picker | 420 TIER 3 | — |
| Cotton Picker | 420 | — |
| Loader | 921C | — |
| Loader | 821C | — |
| Cotton Picker | 2555 | — |
| Tractor | STEIGER ST225 BEARCAT | — |
| Tractor | STEIGER BEARCAT | — |
| Trencher | 560 | — |
| Trencher | 460 | — |
| Trencher | 6010 | — |
| Trencher | 6030 | — |
| Trencher | 660 | — |
| Loader | 721C | — |
| Loader | 621D | — |
| Tractor | CPX420 TURKEY | — |
| Loader | 621C | — |
| Trencher | TF300B | — |
| Baler | 8520 | — |
| Baler | 8555 | — |
| Baler | 8545 | — |
| Baler | 8530 | — |
| Trencher | 300CM | — |
| Loader | 621B | — |
| Trencher | 400TX | — |
| Trencher | 150CM | — |
| Combine | 2188 | — |
| Combine | 2166 | — |
| Loader | 2450 | — |
| Cotton Picker | 2155 | — |
| Combine | 1688 | — |
| Combine | 1666 | — |
| Combine | 1644 | — |
| Cotton Picker | 2044 | — |
| Backhoe | 35WL | — |
| Backhoe | 35C WL | — |
| Baler | 8550 | — |
| Baler | 8540 | — |
| Cotton Picker | 1844 | — |
| Cotton Picker | 2055 | — |
| Loader | 621 | — |
| Loader | W20B | — |
| Backhoe | 780D | — |
| Backhoe | 680L | — |
| Combine | 1680 | — |
| Loader | 821 | — |
| Combine | 1660 | — |
| Loader | W20C | — |
| Loader | W30 | — |
| Tractor | 4994 | — |
| Tractor | STEIGER ST280 COUGAR | — |
| Tractor | STEIGER ST270 COUGAR | — |
| Tractor | STEIGER ST251 COUGAR | — |
| Tractor | STEIGER ST250 COUGAR | — |
| Tractor | STEIGER ST350 PANTHER | — |
| Tractor | STEIGER ST325 PANTHER | — |
| Tractor | STEIGER ST320 PANTHER | — |
| Tractor | STEIGER ST310 PANTHER | — |
| Cotton Picker | 616 | — |
| Cotton Picker | 622 | — |
| Excavator | 1187B | — |
| Excavator | 1080B | — |
| Excavator | 50 | — |
| Loader | W18B | — |
| Backhoe | 780C | — |
| Backhoe | 680K | — |
| Skid Steer | 1500-SERIES | — |
| Skid Steer | 1700-SERIES | — |
| Skid Steer | 1529 | — |
| Trencher | P60 | — |
| Tractor | STEIGER PANTHER | — |
| Loader | 2350 | — |
| Excavator | 1080 | — |
| Loader | W14H | — |
| Loader | W14FL | — |
| Loader | W14 | — |
| Trencher | SD100 | — |
| Tractor | STEIGER COUGAR | — |
| Loader | 1501 | — |
| Excavator | 1187 | — |
| Loader | W24C | — |
| Backhoe | 780B | — |
| Tractor | STEIGER CM360 PANTHER | — |
| Tractor | STEIGER CM325 PANTHER | — |
| Tractor | STEIGER KM-360 PANTHER | — |
| Tractor | STEIGER KM-325 PANTHER | — |
| Tractor | STEIGER KM-280 COUGAR | — |
| Tractor | STEIGER KM-225 BEARCAT | — |
| Tractor | STEIGER SM-325 PANTHER | — |
| Loader | 70 | — |
| Dozer | 1150B | — |
| Dozer | 1150C | — |
| Dozer | 855C | — |
| Dozer | 850C | — |
| Excavator | 40BLC | — |
| Excavator | 40EC | — |
| Excavator | 40YC | — |
| Excavator | 880C | — |
| Tractor | 2390 | — |
| Tractor | 2290 | — |
| Tractor | 2090 | — |
| Tractor | 2590 | — |
| Tractor | STEIGER CP-1360 PANTHER | — |
| Tractor | STEIGER CP-1325 PANTHER | — |
| Tractor | STEIGER CP-1400 PANTHER | — |
| Tractor | STEIGER PTA280 COUGAR | — |
| Loader | 60 | — |
| Loader | W18 | — |
| Loader | W20 | — |
| Loader | W36 | — |
| Trencher | 475 | — |
| Tractor | STEIGER PT225 BEARCAT | — |
| Tractor | STEIGER PTA325 PANTHER | — |
| Tractor | STEIGER PTA310 PANTHER | — |
| Trencher | FH4 | — |
| Tractor | STEIGER PTA297 PANTHER | — |
| Tractor | STEIGER PTA270 COUGAR | — |
| Tractor | STEIGER PTA251 COUGAR | — |
| Tractor | STEIGER PT270 COUGAR | — |
| Tractor | STEIGER | — |
| Loader | 65 | — |
| Excavator | 35 | — |
| Backhoe | 680G | — |
| Backhoe | 780 | — |
| Dozer | 1450 | — |
| Excavator | 880 | — |
| Excavator | 980 | — |
| Excavator | 880B | — |
| Tractor | 2470 | — |
| Tractor | 2670 | — |
| Combine | 715 | — |
| Engine | 504D | — |
| Engine | 504BD | — |
| Trencher | P55 | — |
| Trencher | L55 | — |
| Tractor | 1370 | — |
| Tractor | 1270 | — |
| Tractor | 1175 | — |
| Tractor | 1070 | — |
| Tractor | 1570 | — |
| Tractor | 970 | — |
| Combine | 815 | — |
| Combine | 915 | — |
| Excavator | 120 | — |
| Loader | W24B | — |
| Cotton Picker | 414 | — |
| Tractor | STEIGER ST220 BEARCAT | — |
| Mower | 1110 | — |
| Tractor | STEIGER WILDCAT | — |
| Tractor | STEIGER SUPER WILDCAT | — |
| Combine | 615 | — |
| Tractor | 870 | — |
| Skid Steer | 1530 | — |
| Loader | W7E | — |
| Backhoe | 34 | — |
| Loader | W10E | — |
| Loader | W9E | — |
| Loader | W8E | — |
| Tractor | 1200 | — |
| Tractor | 1030 | — |
| Tractor | 930-SERIES | — |
| Loader | 300 | — |
| Loader | W10C | — |
| Loader | W9C | — |
| Loader | W8C | — |
| Mower | 110 | — |
| Loader | W10B | — |
| Loader | W7 | — |
| Loader | W9B | — |
| Loader | W8B | — |
| Backhoe | 32 | — |
| Tractor | B414 | — |
| Tractor | B275 | — |
| Backhoe | 420BD | — |
| Backhoe | 320B | — |
| Dozer | 600 | — |
| Backhoe | 420B | — |
| Harvester | 14-43 | — |
| Harvester | 14-44 | — |
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