Description
Overview:
This Internal Gear Case Comp is a genuine Makita replacement housing for the DTW285 impact wrench. Built from a robust metal alloy with precision machining, it encloses and supports the internal drive and impact gearing, keeping components properly aligned under load. The case helps protect the mechanism from debris, maintains correct clearances, and provides stable mounting points for associated fasteners. Replacing a worn, cracked, or stripped original case with the correct OEM part helps restore performance, reduce vibration, and extend tool life. Supplied to Makita specification under OEM No. 142389-1, it is intended as a direct-fit service component for maintenance and repair by professional technicians and competent DIY users who need dependable operation from their DTW285.
Key Features:
- Genuine Makita OEM replacement (OEM No. 142389-1)
- Direct fit for DTW285 with factory dimensions
- Durable metal alloy housing for impact and wear resistance
- Precision-machined seating and mounting points for accurate gear alignment
- Helps restore torque delivery, smooth operation, and tool efficiency
- Compatible with original screws, seals, and internal components
- Straightforward installation with standard workshop tools
- Manufactured to Makita quality standards for long service life
- Suitable as a proactive service replacement when the original casing shows damage or stripped threads
Typical Applications:
Used during overhaul or repair of a Makita DTW285 when the original gear case is worn, cracked, distorted, or has damaged threads. Common in automotive wheel work, construction fixings, plant and site maintenance, and workshop environments where reliable impact performance and precise gear support are required.
Also known as:
Sometimes referred to as a hammer case, transmission casing, front housing, drive-end housing, or internal ring gear case. These terms describe the structural casing that supports the impact and gear mechanism and anchors the front end of the wrench assembly.
Fits Models:
DTW285
Alternate Part Numbers:
1423891
Product Specifications
| L&S Part No. | 142389-1 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 142389-1 |
| Unit of Sale | 1 |
| Applications | DTW285 |
| Machine Type | Impact Wrench |
| Fits Brands | Makita |
