OEG PARTS PP21127N Alternator 40012505 75A AP600D CS74 20R3890 10103204

( Brand: Oeg Parts ), ( Manufacturer Part Number: PP21127N ), ( Type: Alternator ), ( Amperage: 75 A ), ( Features: Pulley Included, Clockwise Rotation ), ( Oe/oem Part Number: 10103204 A-1827 A1827 8600686 8600573 400-12505 ), ( Voltage: 24 V ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: No ), ( Country Of Origin: China ), ( Ipn: 40012505 399-1485 3991485 234-3463 2343463 21127 ), ( Spec General: 13si Ir/if 75a 24v Cw S8 ), ( Spec Includes: Mounting Hardware ), ( Spec Internal Id: Pp21127n-ne3 )

Review OEG PARTS New 75a Alternator Caterpillar 14 fits 2009–2012

The OEM PP21127N 75A Alternator is a crucial component for powering various electrical systems in Caterpillar equipment, specifically the AP600D and CS74 models produced between 2009 and 2014. This alternator, carrying the part numbers 20R3890 and 10103204, is designed to deliver a robust 75 Amperes of electrical current.

The alternator boasts a durable and reliable design, built to withstand the demands of heavy-duty machinery. It features a robust rotor and stator construction, ensuring smooth and efficient power conversion. The alternator's efficient design not only delivers the required power but also ensures minimal heat generation, contributing to the longevity of the component.

The OEM PP21127N 75A Alternator comes with a three-phase design, making it suitable for powering the complex electrical systems found in modern Caterpillar equipment. It is engineered to work seamlessly with the engine and battery, ensuring a stable voltage output and reliable starting performance.

The alternator is also equipped with a voltage regulator, ensuring that the output voltage remains within the optimal range for the electrical systems. This regulator also helps prevent overcharging, which can lead to damage to the battery and other electrical components.

Installation of the OEM PP21127N 75A Alternator is straightforward, making it a popular choice among mechanics and technicians. The alternator comes with all necessary mounting hardware, making the installation process quick and efficient. It is also compatible with various wiring harnesses, allowing for a hassle-free connection to the electrical systems.

In summary, the OEM PP21127N 75A Alternator is a high-performance and reliable component designed for powering the electrical systems in Caterpillar's AP600D and CS74 models. Its durable construction, efficient design, and ease of installation make it an ideal choice for heavy-duty applications.

The OEM PP21127N 75A alternator is a genuine Cat (Caterpillar) part designed for various Cat models including the AP600D, CS74, 20R3890, and 10103204 from the years 2009 to 2014. Here are some pros and cons of buying this alternator:

1. Genuine Cat Part: This alternator is a factory-original component, ensuring optimal performance, reliability, and compatibility with your Cat equipment.

2. Warranty: OEM parts typically come with a warranty, which may provide peace of mind and protection against potential defects.

3. Quality: Cat parts are known for their high-quality construction and durability.

4. Easy Installation: Since this is a direct replacement part, installation should be straightforward and efficient.

1. Cost: OEM parts tend to be more expensive than aftermarket alternatives due to their brand reputation and warranty.

2. Limited Availability: OEM parts may not be as readily available as aftermarket options, especially from independent retailers.

3. Longer lead time: Since OEM parts are manufactured by the original equipment manufacturer, they may take longer to be shipped and received compared to aftermarket alternatives.

In conclusion, the OEM PP21127N 75A alternator offers several advantages, such as genuine Cat compatibility and quality construction. However, it comes at a higher cost and may have limited availability compared to aftermarket alternatives. Ultimately, the decision to buy this alternator depends on your specific needs, budget, and preference for OEM parts. If you prioritize the benefits of a genuine Cat part and the peace of mind that comes with a warranty, then purchasing the OEM PP21127N 75A alternator is a recommended choice. Otherwise, you may consider exploring aftermarket options for cost savings.

Details:

3054E 00-00 All, Caterpillar Ag. Same Day Handling.: Alternator; condition: New; Unit Series: 13SI; voltage : 24V; Amperage: 75A; Rotation: CW; Regulator/Fan: IR/IF; Pulley Class: S8; Mounting Hardware Included: No; Finish: Same as OE; Number of Pieces: 1; Country Origin: CN; Notes: PERMANENT MAGNET. New 75A Alternator For Caterpillar AP600D 2009 -14, CS74 2009 12 20R3890 10103204.

You can also find our phone number by ing on FAQs > Other. 1 Year Warranty. With the exemption of us. Compatible with Caterpillar Ag.

part #: pp21127n prices

• $141.99-$259.36

specifications altnagen:

• for makes: Caterpillar
• for years: 2009-2012
• brand: Oeg Parts
• mpn: Pp21127n
• type: Alternator
• amperage: 75 A
• features: Pulley Included, Clockwise Rotation
• oe/oem part number: 10103204 A-1827 A1827 8600686 8600573 400-12505
• voltage: 24 V
• manufacturer warranty: 1 Year
• universal fitment: No
• country of origin: China
• ipn: 40012505 399-1485 3991485 234-3463 2343463 21127
• spec general: 13si Ir/if 75a 24v Cw S8
• spec includes: Mounting Hardware
• spec internal id: Pp21127n-ne3

payments altnagen:

• other
• credit card: Mastercard
• wallet: Apple-pay

offer altnagen:

• sold: 0
• options: Ship-to-home
• started: January 20, 2026
• availability: In Stock

general altnagen:

• condition: New
• Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > Alternators Generators

returns altnagen:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

seller altnagen:

• # reviews: 103785
• city: Miami, Florida
• rating: 99.4%

shipping altnagen:

• service: Standard, Expedited, Overnight
• cost: $0.00
• class: Standard, Expedited, One-day
• type: Fixed
• transit: 3-7 Days

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