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Generator bearings are critical components that ensure the smooth rotation of the alternator rotor. Worn or damaged bearings can lead to noise, reduced charging efficiency, and ultimately, generator failure. Selecting high-quality replacement bearings is essential for maintaining your vehicle's electrical system and preventing costly repairs.
Fitment: Generator bearing is suitable for model.The OEM number is 23721-AA040.
The replacement part number for reference: for IR/IF Alternators (S.R.E.)- BRG0061, 800615, 130-01047, 130-01109, B800DRR, S930P18570, S930P63605, S930P63670, 8004D, 8004DJ, SC8A05LHI, 10-800-4, 10-800-4W, Z5-2312.
Long service life: The bearing is made of high-hardness iron material, which has high hardness, ,, and is not easy to damage, ensuring long-term use.
Installation: The original standard, easy to install and replace, does not require complicated and professional tools, can be directly replaced by old or damaged, is a accessory.
Quality guarantee: and customer service,12 month and customer service. If you have any questions, please email us first and we will be happy to help you until you are satisfied.
1.Fitment:Practical accessory fits for .Replacing OEM numbers for reference: 23721-AA040.
2.Outstanding performance:Professional manufacturing, in size, a great modification part to upgrade your vehicle.Features less friction and higher speed, practical ot use.
3.Premium quality :The Generator Bearing is made of quality iron material, the bearing is and ageing resistant.which has long service life.so that make sure the Generator Bearing work well all the time.
4.Easy to install:The Generator Bearing is easy to install, no modification is required.save time and effort.convenient for using.You can replace the old or broken one directly.
Product Detail: Built to meet standard specification, strictly follow factory quality control.Fine workmanship, wear‑resistance and the service life is longer.
5.Purchase service:We value the shopping experience and satisfaction of each customer, so we provide technical support. If the product install or quality have any problem, please us in time.We will solve it as soon as possible.
【Axial Load Capacity】- 46,500 N static axial load capacity; 13,100 N dynamic axial load capacity; 10,000 RPM maximum speed
【Features】- Thrust needle roller bearings with alloy steel can be used for heat tolerance and durability under heavy loads in stuation; Steel cage guides and evenly spaced rollers for reduced friction, vibration and noise
【Special】- AXK2035-2AS thrust needle roller bearing with washers has high quality, especially when used with O-rings on lawn mowers, which help the main pin of the torsion beam to rotate more easily
【Package contents】- 2 x AXK2035 bearing, 4 x AS2035 bearing washers
【Wide range of applications】- Widely used in mechanical engineering, CNC machine tools, wind power generation, electric motors
🔩 Complete Delco Starter/Generator Repair Kit Direct-fit rebuild kit for Delco starter-generators used on Cub Cadet and lawn & garden tractors. Restores proper cranking + charging performance.
🧰 Includes Brushes, Springs, Bearings & Bushing Kit includes (2) Brushes 81-1203, (2) Brush Springs DG-651, (2) Bearings 6-203-4, PLUS (1) Bronze Bushing 62-1600 for models requiring a bushing on the commutator end.
🔎 Fits Delco 1101996, 1101997 & Many Additional Units Compatible with a wide range of Delco S/G unit numbers such as 1101432, 1101693, 1101871, 1101926, 1101930, 1101947, 1101987, 1101991, 1101996, 1101997, and many more.
🚜 Fits Popular Cub Cadet Tractor Models Used on classic Cub Cadet machines including 70, 71, 72, 100, 102, 105, 106, 107, 122, 123, 124, 125, plus other tractors running Kohler K-161, K-241, K-301 engines.
✔️ Premium Aftermarket Components Quality carbon brushes, correct-tension springs, precision bearings, and bronze bushing ensure smooth operation, reduced friction, and reliable long-term service.
REDUCES REPLACEMENT FREQUENCY - Ultra-durable, high-quality bearings are designed to survive the roughest conditions, lowering maintenance costs and replacement frequency.
HIGH RPM SUPPORT - The extreme RPM support minimizes wear and tear, protecting the bearings from early failure and collapse. These bearings are designed to survive high pressure.
ULTRA-RESISTANT - This ball bearing is made from chrome steel and can survive severe impacts. It can also be fitted in several machines, and metal fatigue is not a problem for these bearings.
DUAL-SIDED RUBBER SEAL - Double rubber seal on both sides protects the ball bearing, safeguarding its integrity, ensuring it holds together whatever structured it is holding together.
BASED IN USA - Our sealed ball bearings are locally designed in South Florida with the help of our reliable industry experts.
Your starter generator will either use a bearing and a bushing, or 2 bearings. Either way this kit has what you need.
Will Fit the following Delco Remy Generator Models: 1101432 1101433 1101689 1101690 1101691 1101692 1101863 1101864 1101875 1101694 1101695 1101696 1101697 1101699 and more
REDUCES REPLACEMENT FREQUENCY - Ultra-durable, high-quality bearings are designed to survive the roughest conditions, lowering maintenance costs and replacement frequency.
HIGH RPM SUPPORT - The extreme RPM support minimizes wear and tear, protecting the bearings from early failure and collapse. These bearings are designed to survive high pressure.
ULTRA-RESISTANT - This ball bearing is made from chrome steel and can survive severe impacts. It can also be fitted in several machines, and metal fatigue is not a problem for these bearings.
DUAL-SIDED RUBBER SEAL - Double rubber seal on both sides protects the ball bearing, safeguarding its integrity, ensuring it holds together whatever structured it is holding together.
BASED IN USA - Our sealed ball bearings are locally designed in South Florida with the help of our reliable industry experts.
Last update on 2026-07-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Automotive Replacement Generator Bearings
Understanding Generator Bearing Types
Generator bearings, often referred to as alternator bearings, are typically ball bearings. They come in various sizes and configurations to fit different alternator models. The most common types are front and rear bearings, which are usually identical or very similar in design. It's crucial to identify the exact bearing specifications required for your vehicle's alternator to ensure proper fitment and function.
Key Features to Consider
Material Quality: Look for bearings made from high-grade steel alloys for durability and resistance to wear. Premium bearings often feature hardened steel races and balls for superior performance.
Sealing: Bearings with effective seals (e.g., rubber or metal shields) help prevent contaminants like dirt, dust, and moisture from entering, extending their lifespan.
Lubrication: Ensure the bearings are adequately pre-lubricated with high-temperature grease. Some performance bearings may offer specialized lubrication for extreme conditions.
Brand Reputation: Opt for bearings from reputable manufacturers known for their quality control and automotive component expertise.
Compatibility and Fitment
The most critical aspect of purchasing replacement bearings is ensuring they are compatible with your specific vehicle make, model, and year. Alternator designs vary significantly between manufacturers and even within different trim levels of the same vehicle. Always consult your vehicle's service manual or use online parts lookup tools to find the correct part numbers. Cross-referencing part numbers with the bearing manufacturer's specifications is also recommended.
Installation Considerations
Replacing generator bearings typically requires specialized tools, such as bearing pullers and presses. It is a moderately difficult repair that involves disassembling the alternator. If you are not experienced with automotive electrical components, it is advisable to seek professional installation. Improper installation can lead to premature bearing failure or damage to the alternator itself.
Frequently Asked Questions
What are the signs of failing generator bearings?
Common signs include whining or grinding noises coming from the alternator, especially at higher RPMs. You might also notice a decrease in charging system performance or the battery warning light illuminating on your dashboard.
Can I use a generic bearing if the exact one isn't available?
It is strongly discouraged. Using a generic or incorrect size bearing can lead to improper fitment, premature wear, and potential damage to the alternator and other electrical components.
How long do generator bearings typically last?
The lifespan of generator bearings can vary greatly depending on driving conditions, vehicle maintenance, and the quality of the bearing itself. Under normal conditions, they can last for many years and tens of thousands of miles.
Do I need to replace both front and rear bearings at the same time?
While not always mandatory, it is often recommended to replace both front and rear bearings simultaneously. If one bearing is failing, the other may be nearing the end of its service life as well, and replacing them together minimizes future downtime.
What is the difference between shielded and sealed bearings?
Shielded bearings have metal shields that offer some protection against larger contaminants but allow grease to escape. Sealed bearings have rubber seals that provide better protection against dirt and moisture ingress and help retain lubricant more effectively.
Are there any specific maintenance tips for generator bearings?
Generator bearings are typically sealed and pre-lubricated, requiring no routine maintenance. However, keeping the engine bay clean and avoiding high-pressure washing directly at the alternator can help prevent premature contamination.
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