Product Description
**Milwaukee parts change not only by model# but also by serial number. To look up your tools parts break down on Milwaukee's website please click here:
Milwaukee Gear Case Cover
Model Number: 42-92-0056
The Milwaukee 42-92-0056 Gear Case Cover is a genuine OEM replacement part designed for the Milwaukee 2551-20 M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver, Milwaukee's signature quiet impact driver that uses an internal hydraulic oil drive system to deliver impact driving power at significantly lower noise and vibration levels than conventional impact drivers. Documented in Milwaukee service bulletin 54-26-0005, the gear case cover is the smoke-colored plastic cover that fits over the front of the gear case area, protecting the internal planetary gears, ball bearings, and gear case assembly from dust, debris, and contamination while allowing the tool's integrated LED work light to shine through to illuminate the work area. The smoke tint balances impact protection with the translucent properties needed for the LED illumination feature to work properly.
A cracked, broken, missing, or excessively worn gear case cover exposes the planetary gear train and bearings to dust, dirt, and debris contamination that can shorten the service life of the gear box, while also potentially obscuring or distorting the LED work light output. Replacing the cover with this OEM service part restores correct front-of-tool protection, dust exclusion, and unobstructed LED work light projection. Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee 2551-20 service parts diagram before ordering, since Milwaukee occasionally implements running production changes that affect part compatibility within the same catalog number. The 42-92-0056 is specific to the 2551-20 M12 FUEL SURGE platform and is NOT interchangeable with the Milwaukee 42-92-0054 Gear Case Cover, which serves a different Milwaukee tool platform despite the similar part number and identical descriptive name. Verify by serial number using Milwaukee's online parts lookup before ordering to confirm correct fitment.
Features
- Genuine Milwaukee OEM replacement, direct factory part for the 42-92-0056 reference
- Designed for the Milwaukee 2551-20 M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver
- Smoke-colored plastic cover for the gear case front
- Protects internal planetary gears and ball bearings from dust and debris contamination
- Translucent design allows the integrated LED work light to shine through to the work area
- Manufactured to Milwaukee factory tolerances and material specifications
- Direct-fit replacement, no modification required for installation
- Restores correct front-of-tool protection after cracking, breakage, wear, or loss
- Part of the gear case service area documented in Milwaukee bulletin 54-26-0005
- Lightweight construction at 0.02 lb maintains tool balance and ergonomics
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 42-92-0056
- Official Description: Gear Case Cover
- Component Type: Gear Case Front Protective Plastic Cover
- Material: Plastic (smoke-colored translucent)
- Primary Fitment: Milwaukee 2551-20 M12 FUEL SURGE 1/4 in. Hex Hydraulic Driver
- Service Bulletin Reference: 54-26-0005
- Part Weight: 0.02 lb
- Quantity: Sold individually, 1 cover per order
- Part Type: OEM Service Replacement Part
Includes
- (1) Milwaukee 42-92-0056 Gear Case Cover
- Note: This gear case cover is specific to the 2551-20 M12 FUEL SURGE platform and is NOT compatible with the Milwaukee 42-92-0054 Gear Case Cover, which fits a different Milwaukee tool despite the similar part number and identical name
- Note: Verify your tool's catalog number (2551-20) and serial number against the official Milwaukee parts diagram before ordering
