Preparing your vehicle settings
YMMSE Car Icon Select your vehicle
Year
    Make
      Model
        Submodel
          Engine
            settings
            settings
            2018 Acura ILX Base 4 Cyl 2.4L expand_more
            search Browse Part
            add_box Add New Vehicle
            Shop By Brand
            Select Brand

            Shop by Brand

            Shop by Price

            Shop by Series

            Shop by Condition

            COLLAPSE ALL

            BMW Alternator

            We have 130 Items In-stock.
            • Top Sellers
            • Shop By Model

            OE Replacement Alternator, Remanufactured

            $101.17 $233.71 You Save $132.54 (57%)
            Core Deposit: $46.67
            Add to Cart
            Availability: In Stock
            Only from APW Rewards

            QUALITY-BUILT ALTERNATORS

            Dedication and exceptional attention to detail are constants throughout the life of Quality-Built alternators—from state-of-the-art manufacturing to 100% end-of-line testing and unparalleled ...(see more)

            • Brand SKU#: Quality-Built 15734
            • Notes: Valeo unit
            • Condition: Remanufactured
            • Amperage Output: 180 Amp
            • Pulley Type: Serpentine
            • Number of Grooves: 6 Grooves
            • Quantity Sold: Sold individually
            • Warranty: Lifetime Quality-Built limited warranty
            See more

            Fits the following BMW Models

            • 745i | Base | 8 Cyl 4.4L
            • 545i | Base | 8 Cyl 4.4L
            • 645Ci | Base | 8 Cyl 4.4L
            • 745Li | Base | 8 Cyl 4.4L
            • Alpina B7 | Base | 8 Cyl 4.4L
            See more

            OE Replacement Alternator, Remanufactured

            $159.61 $265.33 You Save $105.72 (40%)
            Core Deposit: $41.48
            Add to Cart
            Availability: In Stock
            Only from APW Rewards

            DENSO (REMANUFACTURED) OE REPLACEMENT ALTERNATORS

            Meticulously engineered and evaluated to exceptional standards, Denso’s remanufactured OE replacement alternators will restore your ride to fresh-from...(see more)

            • Brand SKU#: Denso 210-5391
            • Condition: Remanufactured
            • Amperage Output: 120 Amp
            • Quantity Sold: Sold individually
            • Warranty: 1-year Denso limited Warranty

            Fits the following BMW Models

            • Z3 | Coupe | 6 Cyl 3.0L
            • Z3 | Roadster | 6 Cyl 2.5L | 6 Cyl 3.0L
            • 525i | Base | 6 Cyl 2.5L
            • 530i | Base | 6 Cyl 3.0L
            • 330i | Base | 6 Cyl 3.0L
            • 325i | Base | 6 Cyl 2.5L | 6 Cyl 3.0L
            • 325xi | Base | 6 Cyl 2.5L | 6 Cyl 3.0L
            • 325Ci | Base | 6 Cyl 2.5L
            • 330Ci | Base | 6 Cyl 3.0L
            • 330xi | Base | 6 Cyl 3.0L
            • X5 | 3.0i | 6 Cyl 3.0L
            • 330Ci | M | 6 Cyl 3.0L
            See more

            OE Replacement Alternator, New

            $245.35 $309.92 You Save $64.57 (21%)
            Add to Cart
            Availability: In Stock
            Only from APW Rewards

            BOSCH (NEW) OE REPLACEMENT ALTERNATORS

            Revive your drive with the sturdy design and dependable, OE-standard performance guaranteed by Bosch's new OE replacement alternators. Since 1886, Bosch has developed ...(see more)

            • Brand SKU#: Bosch AL0703N
            • Condition: New
            • Pulley Type: Serpentine
            • Number of Grooves: 6 Grooves
            • Quantity Sold: Sold individually
            • Warranty: Lifetime Bosch limited warranty

            Fits the following BMW Models

            • 528i | Base | 6 Cyl 2.8L
            • 323i | Base | 6 Cyl 2.5L
            • 328i | Base | 6 Cyl 2.8L
            • 323Ci | Base | 6 Cyl 2.5L
            • 328Ci | Base | 6 Cyl 2.8L
            • Z3 | Coupe | 6 Cyl 3.0L
            • Z3 | Roadster | 6 Cyl 2.5L | 6 Cyl 3.0L
            • 525i | Base | 6 Cyl 2.5L
            • 530i | Base | 6 Cyl 3.0L
            • 330i | Base | 6 Cyl 3.0L
            • 320i | Base | 6 Cyl 2.2L
            • 325i | Base | 6 Cyl 2.5L | 6 Cyl 3.0L
            • 325xi | Base | 6 Cyl 2.5L | 6 Cyl 3.0L
            • 325Ci | Base | 6 Cyl 2.5L
            • 330Ci | Base | 6 Cyl 3.0L
            • 330xi | Base | 6 Cyl 3.0L
            • X5 | 3.0i | 6 Cyl 3.0L
            • 330Ci | M | 6 Cyl 3.0L
            See more

            OE Replacement Alternator, New

            $360.14 $719.86 You Save $359.72 (50%)
            Add to Cart
            Availability: In Stock
            Only from APW Rewards

            VALEO (NEW) OE REPLACEMENT ALTERNATORS

            Designed to meet your vehicle’s specific needs, Valeo’s new OE replacement alternators are manufactured with premium components for better performance, less CO2 emissions a...(see more)

            • Brand SKU#: Valeo 439606
            • Condition: New
            • Amperage Output: 220 Amp
            • Quantity Sold: Sold individually
            • Warranty: 1 year or 12,000-mile Valeo limited warranty

            OE Replacement Alternator, Remanufactured

            $144.12 $218.65 You Save $74.53 (34%)
            Core Deposit: $38.37
            Add to Cart
            Availability: In Stock
            Only from APW Rewards

            QUALITY-BUILT ALTERNATORS

            Dedication and exceptional attention to detail are constants throughout the life of Quality-Built alternators—from state-of-the-art manufacturing to 100% end-of-line testing and unparalleled ...(see more)

            • Brand SKU#: Quality-Built 15733
            • Condition: Remanufactured
            • Amperage Output: 170 Amp
            • Pulley Type: Serpentine
            • Number of Grooves: 6 Grooves
            • Quantity Sold: Sold individually
            • Warranty: Lifetime Quality-Built limited warranty
            See more

            Fits the following BMW Models

            • 323i | Base | 6 Cyl 2.5L
            • 325i | Base | 6 Cyl 3.0L
            • 330i | Base | 6 Cyl 3.0L
            • 525i | Base | 6 Cyl 3.0L
            • 525xi | Base | 6 Cyl 3.0L
            • 530i | Base | 6 Cyl 3.0L
            • 530xi | Base | 6 Cyl 3.0L
            See more

            Select your BMW Alternator model from the list below.

            3 Factors to Determine the Right BMW Alternator for You

            As the main electrical supplier of your vehicle, a BMW alternator must be selected correctly to ensure great driving performance. Below are the three main factors you need to keep in mind so you will have the correct and exact fit.

            Know the main parts

            It is always good to have a basic knowledge about the main parts of a component. Typically, a BMW alternator has four main parts that include the rotor, stator, rectifier, and regulator.

            • Rotor:This part consists of the shaft, iron core, winding, pole, and slips rings. It functions as a producer of amperage when the electrical windings rotate.
            • Stator: Consists of the windings and steel stampings, the stator produces amperage on a stationary set of windings.
            • Rectifier:This part comprises of diodes fitted in an insulator. It mainly converts AC voltage into direct current voltage as it travels to the battery.
            • Regulator: This part comprises of different terminals, plus a heat sink. It controls the production of voltage, regulates the current flow, and may be installed either inside or outside the assembly. New vehicle models now mostly have alternators with internal regulators.

            Besides the above main parts, there are other elements in an alternator that serve important functions in the operation. There is the pulley that drives the rotor off the engine's movement. A fan that is strategically positioned behind the pulley works by dispersing the heat and cooling the diodes, plus brushes to help the transference of electric current between the battery and alternator. Other important elements are the housing, which is usually made of cast aluminum so it weighs very light and dispels heat easily, plus the front and rear bearings that secure the housing in place.

            Consider the total electrical load

            You need to figure out the total electric load of you BMW to help you select the right alternator. One of the most accurate ways to know the load is by using an ammeter. When the engine is off and the battery charged, you can connect the ammeter and alternatively switch each electric component on and off. As you add up the readings, you can determine the amount of electrical load. Keep in mind that your BMW alternator output should be fifty percent higher than the amount. In case you do not have an ammeter, get an estimated load by inspecting the accessory fuses. Although the amp ratings are greater than the highest draw of each component, the total of all the fuse ratings will give you an overall idea of your electrical load.

            Choose between brand new and refurbished

            A cheaper alternative to a brand new alternator is a refurbished one. A refurbished alternator is an alternator that has been completely taken apart to thoroughly clean and check each component. Broken and defective parts are then replaced with brand new ones. In order to get the right refurbished alternator for your BMW, make sure to have it tested for power and select the one that has a longer warranty. Some high-quality refurbished alternators have a warranty ranging from one to three years.

            Quality-Built Premium Alternator

            The Quality-Built (QB) Premium alternator is a remanufactured product--meaning each component that could possibly fail or is prone to normal wear is replaced with a brand-new component. This gives it unrivaled dependability. Subjected to careful testing under stringent quality standards, it is an affordable and reliable OE replacement. It is designed to be regulated by the vehicle's onboard computer, ensuring effective use of the voltage supplied. It comes with a standard 24/7 QB Roadside Assistance Program (RAP), allowing the driver to call a toll-free dispatch number (located on the roadside assistance card) in the event of an emergency. The service is available anywhere in the US, Canada, and Puerto Rico and includes a jump-start or tow. The QB Premium alternator also comes with a lifetime QB limited warranty.

            Replacement Alternator

            This brand-new OE replacement alternator has all the right qualities and components to effectively power a vehicle's electrical system. It has an output of 150 amps, making it more than capable of handling most of a vehicle's electrical requirements (typical passenger cars and light trucks use alternators that only produce around 50-70 amps). It also comes with a pulley that uses a serpentine belt. This belt system consumes less space in the engine compartment and, because it has higher belt tension and reduced slip, allows for higher fuel economy and available power. This replacement alternator comes with a two-year, unlimited-mileage warranty.

            AutoTrust Platinum Alternator

            The AutoTrust Platinum alternator is a great choice for an OE replacement because of its dependable performance and impressive unlimited warranty terms. It has an electrical output of 150 amps, which is more than double the 50-70-amp alternators that most passenger cars and light trucks use. It is designed to be regulated by the vehicle's onboard computer, which makes sure that the voltage supplied always goes to good use. It comes with a pulley and uses a serpentine-belt system that increases belt life and mechanical efficiency. The AutoTrust Platinum alternator comes with a 5-year unlimited warranty--it can be replaced free of charge (except for shipping and handling fees) as often as necessary during the five-year period.

            Need Help? Get everything right and save time

            Contact our auto parts experts through Live Chat or Email us

            Our Advantage

            Free Shippingon orders $50 and above