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  3. STENS 400-42003

STENS 400-42003 Alternator Magneton Alt 12V 70A

400-42003 Stens Alternator Magneton 12v 70a Alt

( Brand: Stens ), ( Manufacturer Part Number: 400-42003 ), ( Part Type: Alternator )

Review STENS Alternator Magneton 12v 70a Alt

The STENIS 400-42003 Alternator Magneto is a versatile and powerful charging system solution designed for various types of engines, particularly those that require a reliable charging system in situations where a conventional electrical system may fail. This 12-volt, 70-ampere Alternator Magneto is an excellent choice for vehicles, generators, and other machinery that demands a robust and dependable charging system.

This Alternator Magneto is engineered with a high-quality, permanent magnet rotor that delivers consistent and efficient power output. The rotor is designed with a durable, corrosion-resistant construction that can withstand the rigors of various operating environments. The stator windings are carefully crafted using high-temperature insulation material and copper wire to ensure optimal performance and longevity.

The Alternator Magneto comes with an integrated voltage regulator that maintains the charging voltage at the optimal level for the battery, preventing overcharging and undercharging. This ensures that the battery is always charged efficiently and effectively, minimizing the risk of damage and extending its lifespan.

This Alternator Magneto is designed to be easy to install and maintain. It features a compact and lightweight design, making it suitable for a wide range of applications. The alternator housing is made of a robust material, providing excellent protection against impact and vibration. The external terminals are clearly labeled, and the wiring harness is pre-assembled, simplifying the installation process.

The STENIS 400-42003 Alternator Magneto is designed to meet the most demanding charging requirements. It is capable of delivering a high output of 70 amperes, making it an ideal choice for large engines or applications that require a significant amount of power. The alternator is designed to operate efficiently over a wide range of engine speeds, ensuring that the battery is charged consistently, even under heavy load conditions.

This Alternator Magneto is built to last. It is designed with high-quality components and materials, ensuring optimal performance and reliability. The alternator is also backed by a comprehensive warranty, providing peace of mind to users.

In summary, the STENIS 400-42003 Alternator Magneto is a high-performance, reliable, and versatile charging system solution for various applications. Its robust and durable construction, efficient power output, and easy installation make it an excellent choice for those seeking a dependable and reliable charging system.

The Stens 400-42003 is a 12V, 70A alternator with a magneto design, which can be a suitable option for certain types of engines, such as lawn mowers, go-karts, and small aircraft. Here are some potential pros and cons of purchasing this alternator:

Pros:

1. Magneto Design: This alternator uses a magneto design, which means it does not require a battery or ignition system to operate. This can be beneficial for engines that do not have a reliable charging system or battery.

2. High Output: With a 70A output, this alternator can effectively charge a battery quickly or provide a substantial amount of power to an engine.

3. Durable Construction: The Stens 400-42003 is built with a robust design to withstand the rigors of continuous use in harsh environments. It has a die-cast aluminum housing and a copper rotor for efficient heat dissipation.

Cons:

1. Limited Compatibility: This alternator may not be compatible with all types of engines, as it is specifically designed for use with magneto ignition systems.

2. Weight: At around 10 lbs, this alternator is heavier than some other alternatives on the market, which could be a disadvantage for those who need to transport it frequently.

3. Price: The Stens 400-42003 is priced higher than some other 12V alternators on the market.

Conclusion:

The Stens 400-42003 alternator is a high-performance, durable option for engines that utilize magneto ignition systems. Its ability to output 70A makes it an effective choice for quickly charging batteries or providing substantial power to an engine. However, its limited compatibility, weight, and higher price point are potential drawbacks.

Recommendation:

If you have an engine that utilizes a magneto ignition system and requires a high-output charging solution, the Stens 400-42003 alternator could be an excellent choice for your needs. However, if your engine has a different ignition system or you do not require such a high output, it may be worth considering alternative, more cost-effective options.

Details:

Fan Location External. Pulley Type Solid. Mount Hole ID 1 8.300mm. Polarity Negative.

Mount Hole 1 Type Un threaded. Regulator Location Internal. Mount Hole 2 Type Un threaded. Magneton 12V 70A Hole ID 1 Alternator Alt: Alt Lester 12554.

part #: 40042003 price

  • $216.49

specifications altnagen:

  • brand: Stens
  • mpn: 400-42003
  • part type: Alternator

returns altnagen:

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

payments altnagen:

  • other
  • credit card: Discover
  • wallet: Paypal

seller altnagen:

  • city: Levittown, Pennsylvania
  • rating: 98.1%
  • # reviews: 80539

general altnagen:

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

shipping altnagen:

  • type: Fixed
  • service: Standard
  • transit: 4-10 Days
  • class: Standard
  • cost: $0.00

offer altnagen:

  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: July 14, 2025
part type: alternator,
category: auto parts > car truck parts accessories > starters, alternators, ecus wiring > alternators generators, sku: 14068405593214781,
Stens 400-42003 Is Similar To:
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1 offer $216.49 USD
  • New. Offer #1 priced at $216.49 + $0.00 shipping estimate = $216.49* total. STENS OEM REPLACEMENT ALTERNATOR FOR LAWN TRACTORS REPLACES LUCAS ELECTRIC LRA01654, LESTER 12554, MAGNETON 443-113-516-670/673/9516673 STENS : .FREE SHIPPING

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