Valeo 439590 Alternator

Valeo 439590 Alternator for BMW Z4

Restore stable charging performance with this Valeo OE alternator, part number 439590. Built for 12-volt systems and rated at 150 amps, it is a direct-fit electrical replacement for select 2006-2008 BMW Z4 applications.

Valeo’s Alternator line draws on the company’s long OE supply history in electrical systems. This premium alternator is 100% new, uses an internal regulator and internal fan, and is built with an aluminum housing for dependable charging-system service.

Key Features

• 12-volt alternator with 150 amp output
• Internal fan and internal voltage regulator
• Clockwise rotation
• 6-groove pulley configuration
• Aluminum housing construction
• Valeo OE family component
• Technical number: TG15C098

Detailed Description

Valeo 439590 is an OE-style alternator engineered for the BMW Z4 charging system. It is specified for 2006-2008 BMW Z4 models and supports consistent electrical output for vehicle systems that depend on steady voltage. The 150 amp amperage rating and 12-volt design make it a strong match for replacing a worn or failing factory alternator on the BMW Z4.

This part cross-references BBB Industries 11312 and Remy 12929 for the same application. The Valeo Alternator line is positioned as an OE supplier solution, and this unit is built as a new replacement rather than a remanufactured component. Part number 439590 is also identified by technical number TG15C098.

Common Issues This Part Can Address

• Battery warning light caused by low charging output
• Dim lights or fluctuating electrical performance
• Battery discharge from an alternator that no longer maintains voltage
• Charging-system noise or irregular operation from a failing unit
• Electrical instability in 2006-2008 BMW Z4 models

Installation Notes and Tips

Confirm pulley groove count, rotation direction, amperage rating, and connector/pulley match before installation. Verify the vehicle’s charging system condition, battery health, and belt condition during replacement so the new alternator can operate correctly. For best results, compare the original unit to Valeo 439590 before installation on the BMW Z4.

Quality Assurance

Valeo has supplied electrical systems since 1923 and is a recognized OE alternator supplier. This 439590 alternator is a 100% new replacement built to OE-family specifications for 2006-2008 BMW Z4 applications.