Tires & Parts

The Best Automotive Replacement Alternator Brush Sets

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Your vehicle's alternator is crucial for keeping the battery charged and powering electrical systems. Alternator brush sets are small but vital components that ensure continuous contact between the rotor and stator. Replacing worn brushes can prevent costly electrical failures and ensure your car runs smoothly.

SaleNo. 1
Acouto Replaceable Carbon Motor Brushes 4PCS Alternators Brush Set A647X50870 Metal Alternators Brush Set...
  • OE Number ---- Alternators brush set replace part is replacement for A647X50170, A647X50870, A647X50270 for reference, replacement for F1CZ10347 A, F3XY 10347 A for reference. Please double check the part number of your item, matching information is for...
  • Material ---- This alternator regulator brush set is made of metal material, with strong impact and scratch resistance, as well as and abrasion resistance. Professional manufacturing, exquisite workmanship, high accuracy, stable performance and high...
  • Application ---- Replaceable Carbon Motor BrushesReplacement for IR IF alternator. Product Length: Approx: 23mm/0.9in. Product Width: Approx: 8mm/0.31in. Product Height: Approx: 5mm/0.19in. If you are unsure of the item, please us before buying to avoid...
  • Ideal Replacement ---- Replaceable Carbon Motor Brushes are according to the original car size design, replacement of the old or damaged original model, no need to modify, easy and fast installation. Made of 1:1 casting, high standard alignment, curvature...
No. 2
SING F LTD 4X Alternator Carbon Brushes MD604018 2737131011 2737B31011 5x7.9x19mm Compatible with Denso...
  • Alternator carbon brushes compatibility compatible with Denso, compatible with Toyota, compatible with Mitsubishi, compatible with Hino, compatible with Honda for passenger cars, light trucks and commercial engines.
  • OE cross reference...
  • 5x7.9x19mm size details carbon carbon blocks with 50 mm pre attached lead wire deliver consistent contact to slip rings and maintain steady current transfer without changes to alternator brackets or case clearances.
  • Charging system repair use restores battery charging, reduces brush arcing and noise, and supports smooth voltage regulation during commuting, delivery routes, farm tasks and light industrial operation.
No. 3
Alternator Brush Holder Brush Repair Kit, Aluminum Alloy Alternator Brush Holder And Brushes Kit Replacement...
  • [Wide Compatibility]: This alternator brush holder and brushes kit is compatible with various alternator , including 021620-2530, 021620-2720, 31105 PD1 034, 31105 PR7 A01, 31105 PT0 003, and more. Ensure proper fitment by checking the compatibility list...
  • [Premium Durability]: Crafted from ABS and aluminum alloy materials, this alternator brush holder is wearproof, durable, and built to last. It can withstand the demands of continuous use and provide a long service life, saving you time and money on...
  • [High Performance Solution]: With professional manufacturing technology and careful construction, this alternator brush holder repair kit delivers high reliability and stable performance. It ensures the efficient charging system operation of your vehicle...
  • [Easy and Direct Replacement]: Replace your old or damaged alternator brush holder effortlessly with this excellent replacement option. Built to the original factory standard, it provides a fit and eliminates the need for any complicated modifications or...
No. 4
2 Pair Carbon Brush Replacement Compatible with Valeo Alternator PX602 PX60 092950 300722 92950 Vehicle...
  • The carbon brush size is 15.4x6.4x4.6mm, with long built-in 48mm copper wire and 37.5mm spring.
  • Compatible with Valeo Alternator PX602 PX60 092950 300722 92950, etc. Widely used for vehicle alternator regulator.
  • Make of good quality carbon and copper, sturdy and durable, ideal replacement for your old or worn one.
  • Worn brushes are often the cause of a poorly running motor. Replacing brushes can fix an intermittent motor and can restore a motor's electric braking.
No. 5
Cirecsiy Carbon Brush Set for Gas Generator Alternator, Replacement Brushes – Compatible with Caterpillar...
  • Replacement carbon brushes designed for the alternator on portable gas generators, helping maintain consistent power output.
  • Sized to fit the brush holders used on compatible Caterpillar CAT RP6500 generator heads and similar units.
  • Package includes 2 x carbon brushes with leads as shown; brush holder block is not included.
  • Fresh brushes help reduce arcing, improve voltage stability and extend alternator life on aging generators.
No. 6
Chiffonade Generator Copper Repair Kit Alternator Slip Ring Brushes 230090 Replacement Slip Ring for Valeo...
  • Part Number: Manufactured according to strict specifications, alternator slip ring brushes set reference OE number is 230090.
  • Direct Replacement: This slip ring brushes set matches the fit and function of the factory part on specified models, is a reliable replacement part.
  • Material: The alternator slip ring brushes set is composed of ABS and copper, with small electrical power loss and mechanical loss, and long service life.
  • Excellent Conductivity: The brushes are an important component of the motor and are responsible for conducting current between the rotating and stationary parts.
No. 7
4 Pcs Alternator Regulator Brush Set Metal Alternators Brush Set Brx40710 Generator Electric Motor Brush...
  • 【Compatibility】: Alternator regulator brush set is a substitute for alternator. It is equipped with 9190067005, RE58, RE60, and RE72 regulators for early external carbon brush holder.
  • 【Excellent performance】: The alternator regulator brush set is used as the motor carbon brush of the motor commutator or slip ring, and as the inlet and outlet current of the sliding . It has electrical conductivity, thermal conductivity and good...
  • 【OE Number】: The reference OE No. of this alternator regulator brush set is Brx40710, which is formed and designed according to the original data. 1:1 casting, high standard alignment, consistent curvature, and careful polishing to avoid affecting the...
  • 【High quality material】: The alternator regulator brush set is made of metal material, which has strong impact resistance, scratch resistance, and wear Professional manufacturing, exquisite workmanship, high precision, stable performance and high...
No. 8
SG Store 4pcs Metal Alternators Brush A647X50870 23x8x5mm Compatible with Mitsubishi IR IF
  • Compatibility: Replace A647X50870 A647X50170 A647X50270 metal alternator brush.
  • Compatible with Mitsubishi IR and IF type alternators, simple to install with basic tools.
  • Durable Material: Made of quality metal for excellent conductivity and wear resistance.
  • Accurate Dimensions: Each brush measures 23mm x 8mm x 5mm, matching specifications for proper fit.
No. 9
Replaceable Carbon Motor Brushes 4 Pcs Alternator Regulator Brush Set Brx40710 Generator Electric Motor Brush
  • 【OE Number】 - The referencing OE number of this alternator regulator brush set is Brx40710, which is intricately and designed based on original specifications. This precise engineering ensures compatibility; therefore, you should double-check the part...
  • 【Fitment】 - Designed specifically as a replacement for alternators with part numbers 9190067005, RE58, RE60, and RE72, these carbon brushes work seamlessly with early external brush holders. If there’s any uncertainty regarding fitment, it’s...
  • 【Enhanced Functionality】 - This alternator regulator brush set functions effectively as a motor carbon brush for the motor commutator or slip , acting as a sliding point to export current efficiently. The meticulously crafted design not only...
  • 【Premium Features】 - Boasting exceptional conductivity, excellent thermal properties, and outstanding lubrication performance, these brushes demonstrate remarkable mechanical strength alongside the desirable characteristics essential for commutation...
No. 10
Micro Traders 2Pairs Alternator Carbon Brushes 4.6x6.4x14.5mm Compatible with Rhone Sev Compatible with...
  • Reference OEM Number: 71227702, 71228002, 71228102, 71228402, 71229002, 71229502, 9AL2540, 9AL2540G, 9AL2572, 9AL2572K, 9AL2582, 9AL2582K, 9AL2589.
  • Dimensions: Measures 4.6x6.4x14.5mm, ensuring perfect fit for angle grinders and similar models.
  • Compatibility: Compatible with Rhone Sev Compatible with Motorola Compatible with Valeo.
  • Improved Performance: Designed to maintain efficient alternator operation and prevent power loss.

Last update on 2026-10-19 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Automotive Replacement Alternator Brush Sets

Understanding Alternator Brush Sets

Alternator brush sets are consumable parts that wear down over time due to friction. They are typically made of carbon and are responsible for transferring electrical current to the rotating rotor within the alternator. When these brushes become too short or worn, they can fail to make proper contact, leading to charging system issues like a dimming battery light or a dead battery.

Key Features to Consider

  • Material: Most brush sets are made of carbon, but quality can vary. Look for sets made with high-quality carbon compounds designed for durability and low wear.
  • Compatibility: This is the most critical factor. Ensure the brush set is specifically designed for your vehicle's make, model, year, and, if applicable, the specific alternator part number. Incorrect fitment will prevent installation or lead to premature failure.
  • Durability: Higher quality materials generally translate to longer lifespan, reducing the frequency of replacements.
  • Ease of Installation: While some sets are designed for straightforward replacement, others might require more intricate work. Check product descriptions for any specific installation notes.

When to Replace Alternator Brushes

The most common indicator of worn brushes is a warning light on your dashboard, often shaped like a battery. You might also notice dimming headlights or interior lights, especially when the engine is under load or at idle. A sudden loss of power or a completely dead battery, even after jump-starting, can also point to brush issues. It's also good practice to inspect them during other routine maintenance, such as when replacing the alternator or checking other engine components.

Choosing the Right Set

Always prioritize compatibility. Consult your vehicle's owner's manual or use online parts finders to identify the correct part number for your car. Reading customer reviews can offer insights into the quality and longevity of specific brush sets. If you're unsure, consulting a trusted mechanic is recommended to ensure you purchase the correct replacement part for your vehicle's electrical system.

Frequently Asked Questions

What are alternator brushes made of?
Alternator brushes are typically made of carbon compounds. This material is chosen for its conductive properties and its ability to withstand friction while allowing for electrical current transfer.
How long do alternator brushes typically last?
The lifespan of alternator brushes can vary greatly depending on driving conditions and the quality of the brushes. Factors like mileage, frequency of use, and the alternator's operating temperature all play a role.
Can I replace alternator brushes myself?
Replacing alternator brushes can be a DIY project for those with mechanical experience and the right tools. However, it often requires disassembling part of the alternator, so if you're not comfortable with automotive repair, it's best to seek professional help.
What happens if alternator brushes fail completely?
If alternator brushes fail completely, the alternator will no longer be able to charge the vehicle's battery. This will eventually lead to a dead battery, leaving your vehicle unable to start or run.
Are all alternator brush sets universal?
No, alternator brush sets are not universal. They are designed to be compatible with specific alternator models and vehicle applications. Using the wrong set can lead to improper fitment and electrical system damage.

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