BMW 12-31-1-405-902 Alternator

( Manufacturer Part Number: 12-31-1-405-902 ), ( Part Type: Alternator ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 1998 1999 2000 2001 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( Replaces Part Number: 12-31-1-405-918 )

Review BMW Genuine Alternator fits 1998–2001

Introducing the BMW 12-31-1-405-902 Alternator, a premium replacement part designed specifically for BMW vehicles. This alternator is engineered to meet or exceed the original equipment (OE) specifications, ensuring optimal performance and reliability.

The BMW 12-31-1-405-902 Alternator is a key component of your vehicle's charging system, responsible for converting mechanical energy from the engine into electrical energy to power the vehicle's electrical systems and recharge the battery. The alternator's robust design features a high-output voltage regulator, ensuring stable voltage levels for efficient battery charging and optimal system performance.

This alternator is manufactured using advanced materials and production processes to deliver superior durability and longevity. The alternator's pulley is made from high-strength, engineered polymer material, reducing weight while maintaining strength. The alternator's bearings are made from high-quality, long-lasting materials to minimize wear and tear, ensuring a smooth and quiet operation.

The BMW 12-31-1-405-902 Alternator is designed to be a direct fit replacement for the original alternator, making installation quick and easy. It comes with all necessary mounting hardware and belt tensioner, ensuring a hassle-free installation process. The alternator also includes a new serpentine belt, ensuring a perfect fit and eliminating the need for additional purchases.

In summary, the BMW 12-31-1-405-902 Alternator is a high-quality, OE-specification replacement part designed to deliver superior performance and reliability. Its advanced design features, robust construction, and ease of installation make it an excellent choice for BMW vehicle owners seeking to maintain the optimal performance of their vehicles.

Buying a BMW 12-31-1-405-902 alternator involves considering its potential benefits and drawbacks. This part is essential for the proper functioning of your BMW's electrical system, ensuring that the battery is charged while the engine is running.

1. Original Equipment: This BMW-specific alternator is designed to meet the exact specifications of your vehicle. It is engineered to fit perfectly and provide optimal performance.

2. OEM Quality: Purchasing an OEM (Original Equipment Manufacturer) part ensures that you are getting a high-quality component. BMW's reputation for manufacturing durable and reliable parts is well established.

3. Warranty: A BMW certified alternator often comes with a warranty, providing peace of mind and protecting your investment.

1. Cost: Original equipment parts, such as the BMW 12-31-1-405-902 alternator, can be more expensive compared to aftermarket alternatives.

2. Availability: BMW dealerships and authorized repair shops may not always have this specific part in stock, which could result in a longer wait time for replacement.

3. Limited Compatibility: This alternator is designed specifically for BMW vehicles with the matching part number. If you sell or trade your vehicle, this part may not be transferable to another make or model.

The decision to purchase a BMW 12-31-1-405-902 alternator depends on your priorities and circumstances. If you value the peace of mind that comes with using an OEM part and have the financial resources to cover the cost, this may be the best choice for you. However, if you're on a tight budget or prefer to save money, you might consider exploring aftermarket alternatives. Ultimately, consider consulting a trusted mechanic or BMW specialist for their professional advice and recommendations.

Details:

Parts must be resalable and in the original packaging. 3.2L, remanufactured. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Genuine BMW Parts.

Electrical parts are not returnable.

part #: 12311405902 price

• $39.92

specifications altnagen:

• for makes: Bmw
• for years: 1998-2001
• mpn: 12-31-1-405-902
• part type: Alternator
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• year: 1998 1999 2000 2001
• parts included: Only Part Reference 1 On The Diagram Is Included
• replaces part number: 12-31-1-405-918

payments altnagen:

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

shipping altnagen:

• class: Standard, Expedited, One-day
• transit: 5-11 Days
• type: Fixed
• cost: $43.79
• service: Standard, Expedited, Overnight

general altnagen:

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

offer altnagen:

• options: Ship-to-home
• started: January 31, 2026
• availability: In Stock
• quantity: 2
• sold: 0

seller altnagen:

• city: Reno, Nevada
• # reviews: 221
• rating: 95.5%

returns altnagen:

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

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