G4 Alternator - 70AMP

This high-quality 70AMP alternator is a direct replacement for a wide range of VW petrol engines across the New Beetle, Bora, Golf Mk4 and Polo 9N ranges. Designed to provide stable, efficient charging for 12-volt electrical systems, this alternator supplies up to 70A of output—ideal for everyday driving and standard electrical loads.

Featuring a 56mm diameter, 6-rib pulley, this unit matches the original auxiliary belt configuration used on many late-90s and early-2000s VW petrol engines. The internal regulator maintains a consistent 14V charging voltage, protecting the battery and electrical components from fluctuations. A failing alternator can cause dim or flickering headlights, erratic dashboard behaviour, slow cranking, and battery warning lights; replacing it restores dependable charging and prevents electrical interruptions.

Built to OE-matched standards, this alternator includes high-grade bearings, a durable stator and rotor assembly, and heat-resistant components engineered for longevity. For best results, we recommend inspecting the auxiliary belt, tensioner and electrical connectors during installation to ensure a clean, reliable fit.

Technical Specification

• Charging Current: 70A

• Voltage: 14V

• Pulley Diameter: 56mm

• Pulley Type: 6-rib multi-V

Confirmed Vehicle Fitment

VW New Beetle

• 1.6 Petrol (102hp) – Convertible – 01/2003

• 2.0 Petrol (115hp) – Convertible – 09/2002

• 2.0 Petrol (115hp) – Hatchback – 01/1998

• 1.8T Petrol (150hp) – Hatchback – 10/1999

• 1.8T Petrol (180hp) – Hatchback – 11/2001

VW Bora

• 1.6 Petrol (100–101hp) – Saloon / Estate – 1998–1999

• 2.0 Petrol (115hp) – Saloon / Estate – 1998–2000

• 1.8 Petrol (125hp) – Saloon – 02/1999

• 1.8 Petrol (150hp) – Saloon / Estate – 05/2000

• 1.8 Petrol (180hp) – Saloon / Estate – 03/2002–05/2002

VW Golf Mk4

• 1.4 Petrol (75hp) – Hatchback / Estate – 1997–1999

• 1.6 Petrol (100–102hp) – Hatchback / Estate – 1997–2000

• 2.0 Petrol (115hp) – Hatchback / Estate – 1997–2000

• 2.0 CNG Petrol (116hp) – Estate – 02/2002

• 1.8 Petrol (125hp) – Hatchback / Estate – 1997–1999

VW Polo (9N)

• 1.8 Petrol (150hp) – 09/2005

• 1.8 Petrol (180hp) – 05/2006

A perfect OE-style replacement for restoring smooth, reliable charging across Volkswagen’s late-90s and early-2000s petrol engine ranges.