Porter-Cable 874289 Brush & Retainer Assembly – Genuine OEM Replacement Carbon Brush Assembly

Part Number: 874289
Category: Power Tool Parts → Motor Components → Carbon Brush Assemblies
Type: Porter-Cable 874289 Brush & Retainer Assembly – Genuine OEM Replacement Carbon Brush Assembly

The Porter-Cable 874289 Brush & Retainer Assembly is a genuine OEM replacement carbon brush assembly designed for compatible Porter-Cable, DeWalt, Black & Decker, and Delta power tools. This assembly includes one carbon brush with its retainer, supplying electrical current from the stationary portion of the motor to the rotating armature for proper motor operation. Because carbon brushes are normal wear items, replacing worn brushes helps restore motor performance, improve electric braking (where applicable), and reduce intermittent operation. For best results, manufacturers recommend replacing both brushes at the same time.

Key Features & Benefits

• Part Number: 874289
• Genuine OEM Porter-Cable replacement part
• Replacement carbon brush and retainer assembly
• Restores electrical contact between the armature and motor circuit
• Helps improve motor performance and reliability
• Supports proper electric braking on compatible tools
• Direct-fit OEM replacement
• Sold individually; two brushes are typically required per tool

Technical Specifications

Part Number: 874289

Manufacturer: Porter-Cable / Stanley Black & Decker

Product Type: Brush & Retainer Assembly

Application: Universal Electric Motor

OEM Part: Yes

Quantity: Sold Individually (Most tools require two.)

Compatible Applications

The Porter-Cable 874289 Brush & Retainer Assembly fits numerous compatible corded power tools from:

Compatible Brands

• Porter-Cable
• DeWalt
• Black & Decker
• Delta

Common compatible tool categories include:

• Reciprocating saws
• Electric drills
• Portable band saws
• Additional corded power tools using part 874289

Examples of compatible models include:

• Porter-Cable 1197 Type 1 Drill
• DeWalt DW310 Reciprocating Saw
• Various Porter-Cable Tiger Saws
• Select Black & Decker portable band saws

Always verify your tool model, type number, and original part number before ordering to ensure proper compatibility.

Function of the Carbon Brush Assembly

The 874289 Brush & Retainer Assembly is designed to:

• Transfer electrical current to the rotating armature
• Maintain consistent motor operation
• Support proper motor speed and power output
• Help restore electric braking on compatible tools
• Reduce intermittent motor operation caused by worn brushes
• Restore the factory motor brush system

Common Signs Replacement Is Needed

Replace the brush assembly if you notice:

• Intermittent motor operation
• Reduced motor power
• Excessive sparking at the brushes
• Poor electric braking performance
• Brushes worn close to the lead wire
• Cracked, chipped, or burned carbon brushes

Because carbon brushes wear through normal use, replacing them before they become excessively worn helps prevent damage to the motor's commutator.

Installation & Service Notes

Disconnect the tool from its power source before performing any maintenance.

Access the motor housing according to the manufacturer's service instructions and remove the worn 874289 Brush & Retainer Assembly. Install the replacement brush in the same orientation as the original, ensuring the brush moves freely within the holder and the spring applies proper pressure against the commutator. Replace the second brush at the same time for balanced wear. After reassembly, operate the tool without a load for several minutes to allow the new brushes to seat properly against the commutator.

Important: Always verify your tool model and original part number before ordering. Inspect the commutator for excessive wear, burning, or scoring while replacing the brushes.

Maintenance Recommendations

• Inspect carbon brushes periodically on frequently used tools.
• Replace both brushes together for even motor performance.
• Keep motor ventilation openings clean to reduce dust buildup.
• Avoid overloading the tool, which can accelerate brush wear.
• Inspect the commutator whenever brushes are replaced.
• Use genuine OEM replacement parts to maintain factory fit, reliable electrical contact, and long-term motor performance.