Alternator for car
Order cheap Generator
Alternators: top brands
Generator for leading car makes
Generator for top car models
AUTODOC Bestsellers: Alternators at a good price
The top-selling spare parts in the Alternator category. Browse our huge wide range of high-quality car parts from top brands in the category Alternator and others.
RIDEX 4G0089 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0003 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0160 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0006 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0039 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0045 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0047 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0014 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
RIDEX 4G0148 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
DENSO DAN938 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
VALEO 2542969 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
ROTOVIS Automotive Electrics 9042740 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
VALEO 2542784 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
DENSO DAN1023 Alternator
RRP is the recommended retail price set by the manufacturer or importer of the product and provided by the manufacturer, supplier or retailer. AUTODOC displays the RRP (VAT incl.) for a product if it has been received from at least one supplier or another source that has such information.
Replacement of Alternator: Video repair guide
How to change alternator on MERCEDES-BENZ 190 W201 TUTORIAL | AUTODOC Top brands that produce alternator: BOSCH, STARK, SACHS, SKF, VAN WEZEL, VALEO,...
Step by Step Video Tutorial for Do-it-yourself Auto Repair. Become an amateur mechanic with Autodoc.
| The bestselling products: | |||||
|---|---|---|---|---|---|
| 943308901010 | 9090006 | 9042740 | J5118013 | 9090363 | 437454 |
| From popular manufacturers: | |||||
| RIDEX | BOSCH | HELLA | VALEO | BV PSH | DENSO |
| For popular car brands: | |||||
| VW | MERCEDES-BENZ | BMW | AUDI | OPEL | FORD |
| Alternator – technical details | |||||
| Belt Pulley Ø [mm] | Alternator Charge Current [A] | Pulleys | |||
| 55 | 69 | 70 | 90 | with multi-belt pulley | with freewheel belt pulley |
| 56 | 54 | 65 | 120 | with belt pulley | V-Ribbed Belt Pulley |
| 60 | 53,2 | 100 | 35 | с ремённым шкивом | with V-ribbed belt pulley |
FAQ
Follow these simple recommendations in order to avoid premature breakdown of this component:
- Try to avoid deep puddles or reduce speed before driving through them. Moisture coming to the component can cause its breakdown.
- When cleaning the space under the bonnet, protect the alternator and other electrical components from water with a polyethene film.
- Clean the unit with compressed air during every scheduled engine maintenance.
- Check and adjust tensioning of the V-ribbed belt regularly.
- Use a torque wrench for tightening fasteners.
- Avoid installation of additional equipment to protect the car’s electrical system from overloading.
The first step of checking the unit is to assess its condition visually. Its casing should have no cracks and dents, and its belt should not have critical abrasions and damaged parts. There should be no bent wires and sparks in places of their connection to the terminals.
The next step is to measure the voltage on the battery terminals, for which you’ll need a multimeter. It should be 12,5–12,7 V with the engine off, and 13,8–14,5 V with the running engine and all electrical components turned off. Under the load, with the air-conditioning system, headlights, the heater, and window heating turned on, it should be no less than 13,7–14,0 V.
If any malfunctioning takes place, remove and disassemble the component. You can estimate the wear degree of the brushes by checking their height, and of the contact rings by assessing their diameter. Measure the resistance of the rotor and stator winding and the diode bridge to define whether there is an open circuit. Compare the received data with those specified in the vehicle’s technical documentation.
The procedure can differ for cars of various makes and models. It mostly depends on the arrangement of the components under the hood. For instance, on some cars, the unit can be accessed after opening the hood, while on others – from under a lifted car. Usually, the replacement requires the following steps
- Disconnect the negative terminal from the battery.
- Remove the components blocking access to the alternator.
- Remove the drive belt.
- Take a photo of or mark the wires to avoid mistakes during reassembling. Disconnect them.
- Unscrew all fasteners and remove the unit.
- Install a new part.
- Inspect the belt and pulleys visually. Replace them if necessary.
- Connect all contacts and install the removed components back to their places
The alternator repair consists of replacing the contact rings and brushes, bearings, freewheel clutch and diode bridge. If you have experience in such repairs, you can do this yourself. Otherwise, seek assistance from a car workshop electrician.
-
Safe Order 200 days
-
Free Shipping
-
А convenient app for buying car parts
-
Car repair videos
