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 Air Filter Kit
Model Number: 42-46-0070
The Milwaukee 42-46-0070 Air Filter Kit is a genuine OEM replacement part designed for the Milwaukee 2840-20 M18 FUEL 2-Gallon Compact Quiet Compressor, Milwaukee's cordless M18 air compressor built for finish trades, HVAC service technicians, framing crews, and any tradesperson who needs cordless compressed air capability without the noise of a conventional pancake or wheelbarrow compressor. Identified as Figure 21 on Milwaukee service bulletin 54-05-2840R, the air filter kit is the intake filtration system that protects the compressor pump from dust, debris, sawdust, drywall dust, and other airborne contamination on the jobsite. The filter is positioned at the air intake to the pump motor, where every cubic foot of compressed air the tool produces passes through the filter before reaching the pump cylinder, so any contamination that gets past the filter goes directly into the most critical wear components of the compressor.
A clogged, torn, contaminated, or missing air filter compromises the compressor in multiple ways simultaneously. A clogged filter restricts airflow into the pump, which forces the pump to work harder for less output, accelerates motor wear, and reduces the tool's recovery rate between trigger pulls (especially noticeable with finish nailers running rapid-fire). A torn or missing filter allows abrasive jobsite dust into the pump cylinder where it causes premature wear of the piston, rings, and cylinder walls, leading to compression loss, oil leakage, and eventual pump failure. Regular replacement of the air filter is one of the highest-value preventive maintenance steps an owner can perform on the 2840-20 platform. Because Milwaukee Tool specifies replacement parts by both catalog number and serial number, always verify your tool's serial number against the official Milwaukee 2840-20 service parts diagram before ordering, since Milwaukee uses multiple different air filter kit part numbers across their air compressor lineup (including 42-46-0017 for other Milwaukee air compressors) and the 42-46-0070 is specific to the 2840-20 M18 FUEL platform. 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 42-46-0070 reference
- Designed for the Milwaukee 2840-20 M18 FUEL 2-Gallon Compact Quiet Compressor
- Air intake filtration system for the compressor pump motor
- Protects the compressor pump from dust, debris, sawdust, and airborne contamination
- Documented as Figure 21 on Milwaukee service bulletin 54-05-2840R
- Restores correct airflow into the pump after filter contamination
- Prevents secondary damage to piston, rings, and cylinder walls from dust ingress
- Critical preventive maintenance for cordless air compressor longevity
- Maintains the compressor's recovery rate and full output capability
- Manufactured to Milwaukee factory tolerances and material specifications
- Direct-fit replacement, no modification required for installation
Specifications
- Manufacturer: Milwaukee Tool
- Part Number: 42-46-0070
- Official Description: Air Filter Kit
- Component Type: Air Compressor Pump Intake Filter Kit
- Primary Fitment: Milwaukee 2840-20 M18 FUEL 2-Gallon Compact Quiet Compressor
- Service Bulletin Reference: 54-05-2840R, Figure 21
- Quantity: Sold as a complete kit, 1 per order
- Part Type: OEM Service Replacement Kit
Includes
- (1) Milwaukee 42-46-0070 Air Filter Kit
- Note: This air filter kit is specific to the 2840-20 M18 FUEL Compact Compressor platform. Milwaukee uses other air filter kit part numbers across their broader air compressor lineup (including 42-46-0017), which are NOT interchangeable with the 42-46-0070
- Note: Verify your tool's catalog number (2840-20) and serial number against the official Milwaukee parts diagram before ordering
