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Universal parts – spare parts that are not vehicle-specific

The universal parts catalogue enables you to search for lighting and electrics/electronics products that are not vehicle-specific.
Universal parts catalogueVehicle-specific spare parts

Our online catalogue is designed to make it easier for you to search for spare parts. This means that you can, for example, enter the relevant vehicle by using our comprehensive manufacturer list, the type designation or the engine code.
Vehicle-specific spare partsBrief information as PDF download

Information on various products in one database.
Brief informationDownloads on individual topics
Further technical information
Basic Knowledge
Checking the starter - Causes of failure, troubleshooting
Everything you need to know about typical starter motor faults and how to rectify them - with instructions for testing and repair.
Reading time: 9 minutes
Basic Knowledge
Checking the alternator
Detailed solutions for problems with the alternator - from testing to troubleshooting, everything for your vehicle workshop.
Reading time: 8 minutes

Basic Knowledge
NOx sensor - troubleshooting and repair instructions
Everything about the NOx sensor: how it works, typical causes of failure, symptoms and fault diagnosis with the control unit.
Reading time: 8 minutes
Basic Knowledge
NOx-Sensor - Mercedes Benz
If a fault is diagnosed in the NOx sensor when troubleshooting an exhaust gas purification system, this can present a small challenge for a workshop.
Reading time: 7 minutes
Basic Knowledge
Checking an alternator regulator
Function and design of the overrunning alternator pulley explained - including installation instructions for the overrunning alternator pulley on the alternator.
Reading time: 12 minutes
Technical product info
Changing the alternator freewheel clutch - the procedure
We will show you very concisely the recommended procedure if you need to replace the alternator freewheel clutch. With pictorial illustrations.
Reading time: 1 minute
Technical product info
Earth (31) - troubleshooting
The diagnostic process begins with the checking of the power supply. During this process, the connection (earth) to the body, engine or battery is not sufficiently taken into account
Reading time: 2 minutes
Technical product info
Function of the alternator freewheel clutch explained
We explain the function and the structure of the alternator freewheel clutch and provide you with an insight into the advantages of the overrunning alternator pulley on the alternator
Reading time: 1 minute

Basic Knowledge
Starter damage assessment
Faulty starter motor? Discover typical causes such as overloading or misfiring and how to repair damage effectively.
Reading time: 1 minute

Basic Knowledge
Alternator damage assessment
How to diagnose damage to the alternator: from corrosion and short circuits to bearing damage.
Reading time: 1 minute