Alternator for my car
Where to buy generator at a good price? At AUTODOC!
Best alternator brands: original equipment manufacturer
Find generator for all top car brands
Buy and change the alternator on your car model
AUTODOC Bestsellers: car alternators buy online at a good price to reduce replacement cost
The best-selling replacement parts from the Alternator section. We have a large selection of spare parts from different brands for Alternator and further low-price offers in our range of parts
LUCAS LRB00436 Alternator
14V, 70A, M8 B+, M5 D+, 0230, Ø 55 mm
AS-PL A6365PR Alternator
12V, 90A
LUCAS LRA00471 Alternator
14V, 50A, M6 B+, L, 0004, Ø 56 mm
DENSO DAN1119 Alternator
14V, 120A, Ø 54 mm
BV PSH 121000-0600+ Alternator
12V, 35A, B+ (M8), Ø 75,0 mm
DENSO DAN1375 Alternator
14V, 105A, Ø 60 mm
LUCAS LRA03583 Alternator
14V, 140A, M8 B+, L-DFM, 0248, Ø 54 mm
BV PSH 11.201.742+ Alternator
24V, 55A, B+ (M6), Ø 73,0 mm
AS-PL A0632PR Alternator
12V, 100A
BOSCH 4736 Alternator
14V, 150A, B2+(M8), L, DFM, PL72, excl. vacuum pump, Ø 54,3 mm
DENSO DAN930 Alternator
14V, 150A, Ø 54 mm
AS-PL A4003PR Alternator
12V, 65A
HELLA CA1782IR Alternator
14V, 140A, Ø 56 mm
BOSCH 4047 Alternator
14V, 70A, B+(M6), 42, excl. vacuum pump, Ø 53,5 mm
BOSCH 4534 Alternator
14V, 140A, B1+(M8),DFM,L, PL61, excl. vacuum pump, Ø 56,2 mm
AS-PL A3078PR Alternator
12V, 75A
BOSCH 4714 Alternator
14V, 150A, B+(M8), 61, excl. vacuum pump, Ø 53 mm
BOSCH 4181 Alternator
14V, 120A, DFM, L, B1+(M8), PL113, excl. vacuum pump, Ø 49,5 mm
BOSCH 4626 Alternator
14V, 150A, B2+(M8),DFM,L, PL72, excl. vacuum pump, Ø 50,3 mm
AS-PL A3104PR Alternator
12V, 75A
Car Generator : which brand is better?
According to our customers, the best spare parts in the auto Alternators product category come from the following brands:
- AS-PL
- BV PSH
- BOSCH
- HELLA
- VALEO
Auto Alternator: how much does this product cost?
The price of car parts within the auto Alternator category ranges from £60 to £320, depending on the vehicle type, manufacturer, and product specifications.
Alternator replacement tutorial from AUTODOC Youtube and PDF free download on AUTODOC CLUB
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.
Alternator: useful information
| The bestselling products: | |||||
|---|---|---|---|---|---|
| LRB00400 | 695.002.035.050 | LRA00471 | LRB00183 | LRB00436 | A4003PR |
| For popular car brands: | |||||
| BMW | VW | AUDI | MERCEDES-BENZ | FORD | VAUXHALL |
| Alternator – technical details | |||||
| Belt Pulley Ø [mm] | Alternator Charging Current [A] | Number of ribs | |||
| 67 | 57 | 80 | 65 | 6 | 2 |
| 58 | 70 | 70 | 120 | 4 | 1 |
| 75 | 56 | 35 | 50 | 5 | 7 |
Generator for cars: find out more! How to choose, when to change , and how much they cost
A car’s alternator is a device that transforms the mechanical power of crankshaft rotation into electric current. The energy it produces is used to charge the battery and power various electrical devices while the engine is running. In some cars, this unit is also used to start the engine.
Types
- With carbon brushes. These are the most common alternators. In such devices, the exciter winding is mounted on the rotor shaft. The excitation current flows to the rotor through carbon brushes.
- Brushless. These are less common. They are reliable and durable. These alternators have the exciter winding mounted directly on a stator. Electromotive force is formed due to changes in magnetic conductivity of the air gap between the rotor and the stator.
Moreover, the devices differ in size, relative positions of some of their elements, power, and performance.
Apart from conventional alternators, there are combined starter motor/alternator assemblies. Typically, they are installed on hybrid vehicles or cars equipped with the “Start-Stop” system.
Operating tips
After performing any repair job or inspection of the unit, always make sure the wires were connected correctly. Reversing the polarity of connection may lead to the breakdown of rectifier diodes and voltage regulator. Remember, if you disconnect the alternator from the battery while the engine is running, this may damage the vehicle’s electrical system. Never try to check if the unit is operable with the help of a spark by connecting the unit’s positive terminal to the car body. Do not jump-start another car while the engine in your car is running.
Keep your engine bay clean. Soiling is dangerous both for the unit housing, as this can lead to its corrosion, and for electrical contacts because they might oxidise. But remember to protect the alternator from splashes when washing the engine, for example, by covering it with a durable plastic bag.
Inspect the drive mechanism regularly. An overtightened belt or improperly installed rollers can cause the pulley bearing to fail prematurely. Remember, the pulley is also a consumable. The car manufacturers specify its service life in the owner’s manual. Replace the pulley when it ends.
Avoid driving through deep puddles. If there is no other way, try to cross them carefully at low speed. Temperature variations can damage the unit.
Symptoms of malfunctions
Diode bridge faults, voltage regulator malfunctions, torn or loose drive belt almost always lead to the undercharging of the battery. Therefore, if your battery warning light is constantly blinking during driving, you will usually need to check your alternator. If your headlights are dim and the horn sounds rattling while the engine is running, this may also indicate malfunctions of the unit. You may notice specific humming from under the bonnet in case the bearing is worn out. Whistling noise usually indicates that the belt is torn or has oil on it.
Causes of malfunctions
Water or a mixture of oil and dirt getting onto the circuit board of the diode bridge, as well as reversing the connection polarity, can cause the bridge to burn out. Reversed polarity is also dangerous for other alternator parts, including the voltage regulator, which can also fail after a short circuit in the vehicle mains. Incorrectly mounted idlers and tensioners, as well as errors in belt installation, can lead to the pulley breakdown. Brushes fail because of normal wear and tear.
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In our online shop, you can always buy an alternator for your car at a bargain price. Subscribe to our newsletter to receive up-to-date information concerning the components for your car.
Alternator for popular car models
- Alternator for Ford Transit
- Alternator for Ford Kuga
- Alternator for Ford Ka
- Alternator for Vauxhall Vivaro
- Alternator for Vauxhall Insignia
- Alternator for Fiat 500
- Alternator for Fiat Punto
- Alternator for Jaguar XF
- Alternator for Renault Clio
- Alternator for Toyota Aygo
- Alternator for Toyota Yaris
- Alternator for Mercedes Sprinter
- Alternator for Honda CRV
- Alternator for Peugeot 207
Useful information on functions, causes of malfunction, diagnosis and replacement intervals
FAQ and people ask: Alternator
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.
Confidence in online shopping! You can return alternator without explanation within 200 days after purchase and get your money back. How? Just use the Safe Order service at the checkout page. The service cost is only £ 3,95.
Each order from £ 130 value of goods, include free shipping within Great Britain.
*Does not apply to large-size auto parts.
*Except/excluding areas with the following postcodes: GY#####, JE#####, IM#####
