Polished Billet Aluminium Top Pulley - Type 1 Engines (Fits Alternator Or Dynamo) - 12 Volt

Enhance both the performance and appearance of your engine with this polished billet crankshaft pulley, designed for all upright fan shroud Type 1 aircooled engines from 1200cc through to 1600cc. Precision machined from solid billet aluminium and finished to a high polish, this pulley delivers a clean, show-quality look while offering significant durability and performance benefits over standard pulleys.

The crankshaft pulley is a key component in the engine’s cooling and charging system. It drives the fan belt, which powers the cooling fan and either the dynamo or alternator. A pulley that runs true is essential for maintaining correct belt alignment, reducing vibration and ensuring efficient airflow through the cooling system.

Unlike original pressed steel pulleys that can warp or wear over time, this billet version is solid, accurately balanced and spins exceptionally true. This helps minimise belt wear, reduce the risk of slipping and improve overall engine smoothness—especially important on higher RPM or performance engines.

Ideal for both restoration projects and upgraded engines, this polished pulley offers a perfect combination of function and visual appeal.

Important Fitting Information:
This pulley requires specific hardware for correct installation and adjustment:
• 1 x Billet Pulley Nut (AC903112D)
• 1 x Pulley Washer
• 7 x Billet Pulley Shims (AC903112S)

A complete bundle kit including pulley, nut, washer and shims is also available under part number AC903112CKIT.

Fits:

Aircooled VW Type 1 Upright Engine Applications (1200cc–1600cc):
Beetle: 1960-1979 – 1200cc, 1300cc, 1500cc, 1600cc
Splitscreen Bus: 1960-1967 – 1200cc, 1300cc, 1500cc, 1600cc
Baywindow Bus: 1968-1979 – 1600cc (Type 1 engine models)
Karmann Ghia: 1960-1974 – 1200cc, 1300cc, 1500cc, 1600cc
Trekker (Type 181): 1968-1983 – 1500cc, 1600cc
VW Buggy / Baja: 1960-1979 – Type 1 based engines