400-40075 Alternator 12-VOLT 120

( Brand: J-n ), ( Manufacturer Part Number: 400-40075 ), ( Part Type: Alternator )

Review J N Alternator 12 120 New

The 400-40075 alternator is a vital component of a 12-volt automotive electrical system, designed to charge the battery and power the vehicle's electrical accessories. This alternator, manufactured by Remy International, is a high-performing and durable solution for your vehicle's charging needs.

The alternator boasts a robust 12-volt output, making it suitable for various automotive applications. Its dimensions measure 11.8 inches long, 6.5 inches wide, and 7.5 inches high, ensuring a proper fit for most applications. The alternator's weight is approximately 22.5 pounds, providing a sturdy construction to withstand the rigors of regular use.

The alternator's rotor is constructed from a high-strength, conductive material that ensures efficient power transfer and reliability. The stator windings are designed for optimal power output and longevity, utilizing a high-temperature insulation system to withstand the extreme temperatures encountered under the hood.

The alternator's brush system is designed for minimal maintenance, with a self-adjusting mechanism that ensures consistent contact between the brushes and the rotor. The brushes themselves are made of high-quality materials that provide excellent conductivity and durability.

The alternator housing is engineered for durability and cooling efficiency. It features a robust design with a finned aluminum cover that provides ample surface area for heat dissipation. The alternator is also equipped with a cooling fan to ensure proper operating temperatures, even during heavy usage.

The 400-40075 alternator comes with a robust voltage regulator that maintains the battery voltage within an optimal range, ensuring consistent charging and prolonging the life of the battery. The alternator is also equipped with a diode rectifier that converts the alternating current (AC) generated by the alternator into direct current (DC) that can be used by the vehicle's electrical system.

In summary, the 400-40075 alternator is a high-performing, durable, and reliable solution for your vehicle's charging needs. Its robust construction, efficient power transfer, and minimal maintenance requirements make it an excellent choice for various automotive applications.

Buying a 400-40075 12V, 120 amp alternator can be a significant investment for vehicle owners. Here are some potential pros and cons to consider before making a purchase:

1. High Output: This alternator provides a higher amperage output compared to a standard alternator, which can be beneficial for vehicles with heavy electrical demands, such as those with multiple accessories or large batteries.

2. Durability: The alternator is designed for heavy-duty use and is built to last longer than a standard alternator. It may require less frequent replacement, saving you money in the long run.

3. Improved Battery Charging: The higher amperage output can help charge your battery more efficiently, which can be particularly useful if you frequently use your vehicle for long trips or if you live in an area with cold winters.

1. Cost: A 120 amp alternator is more expensive than a standard alternator, which may be a barrier for some buyers.

2. Size and Weight: Due to its larger size and weight, installing a high-output alternator may require additional modifications to your vehicle, such as brackets or wiring harnesses.

3. Complexity: Installing a high-output alternator can be more complex than installing a standard alternator, as it may require additional steps and precautions to ensure proper installation and operation.

A 400-40075 12V, 120 amp alternator can offer significant benefits for vehicles with heavy electrical demands, including improved battery charging, increased durability, and enhanced performance. However, it comes with a higher cost, larger size and weight, and a more complex installation process. Ultimately, the decision to purchase a high-output alternator depends on your vehicle's specific needs and your willingness to invest in a more robust and efficient power system.

If you frequently use your vehicle for long trips, have multiple accessories, or live in an area with cold winters, a high-output alternator like the 400-40075 may be a worthwhile investment. However, if your vehicle's electrical needs are more modest, a standard alternator may be a more cost-effective and practical choice. Before making a purchase, be sure to carefully consider your vehicle's specific requirements and your installation capabilities to ensure that you get the best possible value for your investment.

Details:

Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Manufactured following strict OE standards to work like the original component. Engineered using the latest technology to ensure product lasts longer in service. Designed specifically for trucks, trailers, and buses.

J N 400-40075 Alternator 12 V, 120 A, New: Part Number: Manufacturer. Made of high-quality components for durability, reliability, and performance.

part #: 40040075 prices

• $183.95-$612.56

specifications altnagen:

• brand: J-n
• mpn: 400-40075
• part type: Alternator

seller altnagen:

• rating: 97.0%
• # reviews: 51586
• city: Los Angeles, California

shipping altnagen:

• type: Fixed
• transit: 4-7 Days
• cost: $0.00
• class: Standard
• service: Standard

offer altnagen:

• quantity: 4
• sold: 0
• started: July 31, 2025
• best offers: True
• availability: In Stock
• options: Ship-to-home

general altnagen:

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

returns altnagen:

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

payments altnagen:

• wallet: Paypal
• credit card: Visa
• other

J-n 400-40075 Is Similar To:

• 0-120-488-205 Bosch New Alternator (46.8% similar) 3 pounds package dimensions: bosch new alternator domestic shipping: item can be shipped within us...(August 20th, 2018)
• 0-124-525-056 Bosch New Alternator (41.6% similar) Q: what is the shipping cost. Protectorates. Cash is accepted, but only upon local pick-up. Q: is local pick-up available. Q: is the original box included. 858686BOSCOB047. Grab the best deal. Please for details. The offered shipping cost in listing applies only to 48 states...(August 31st, 2017)
• 0-35000-3013 Pro Ag Plus New Nikko Alternator (36.4% similar) Tampering or opening, paintings, tap marks, rust, oil grease in on any unit voids and all warranty. Remember: you likely will get what pay for. Manual or automatic. 8r terminal:Baden terminal:blade terminal:blade polarity:negative pulley GROOVES:2PULLEY type:solid pulley OD:3. Version, and often ...(March 12th, 2018)
• 00-9450-0 Empi New Amp Alternator Conversion Kit With Pulley Belt Vw (37.8% similar) New amp alternator kit with chrome components for VW comes complete withal 55...(March 12th, 2018)
• 0009062100 000 906 21 00 Valeo New Alternator 180 Amp (43.8% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(December 26th, 2016)
• 0009063122 000 906 31 22 Valeo New Alternator 200 Amp (43.8% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(December 29th, 2016)
• 01-3723 Ultima New Reman Alternator Mustang Oreilly (40.4% similar) New remain alternator for the ford mustang V6. This is a new remain oriels ultimo alternator. Free shipping and handling in the us 48 states...(August 10th, 2018)
• 0120468001 Esellsimple Alternator New Replaces 600172128535 (37.3% similar) 66 kg reference numbers bosch, LESTER12586MAHLE11. 5MMMTG ear 2 THICKNESS:0. 831IN 6MM ear 1 THICKNESS:0. 25D TERMINAL:M4-0. 6MMREGULATOR CLOCK:7:30FAN location:external regulator location:internal TERMINAL:M8-1. 61IN 3MM ear 3 HOLE:10. 3MM ear 2 HOLE:12. 8b TERMINAL:M6-1. Issues with order if ...(October 17th, 2018)
• 0121813001 Wd Express Bosch New Alternator Fits Mfg Number Catalog (34.9% similar) PST, Mon to Fri...(October 4th, 2018)
• 0124515064 Ren New Alternator Sprinter 611190025966 (31.9% similar) Issues with order if you get an item that isn't as described please be clear in stating what is different about the listing and product received. Pictures are not always of the exact product...(June 29th, 2018)
• 0124515126 90156628 Aan5156 Aan5311 New John Deere Tractor Alternator 684357643518 (30.4% similar) Information 96...(May 15th, 2018)