Halogen bulbs by HELLA can be relied upon for their long life and light output. Rigorous testing ensures our bulbs will stand up to the wear and tear of everyday driving. All HELLA bulbs undergo painstaking tests. The engineers in HELLA's Quality Assurance department have specified a clear requirement profile for every bulb type. Headlight bulbs, for example, are scrutinized by our engineers for their light distribution properties, using state-of-the-art light measuring equipment. Paint adhesion tests in accordance with FAKRA guidelines (German Association of Automotive Experts), vibration and shock tests in line with IEC requirements, geometry measurements, light flux and power measurements as well as service life tests guarantee that you receive perfect quality. These and further tests are carried out by HELLA's quality assurance engineers. All HELLA quality bulbs fulfill this performance spectrum.