Sale

Air and Fuel› Superchargers, Turbochargers and Components

Active Autowerke

BMW S65 4.0L Power Pulley Kit

$399.00 $312.55 Save $86.45

SKU: 13-001

In Stock
In Stock
Ships by Jul 30
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Active Autowerke 13-001 is a power pulley kit designed for the BMW E9X M3 S65 4.0L. This kit is easy to install and reduces parasitic losses from belt-driven auxiliary components, freeing up untapped potential. It includes all necessary BMW power pulleys, such as those for the alternator, water pump, and power steering.

A key feature is the custom-manufactured double-sided belt (DPK) for the air conditioner, which is necessary when altering the crankshaft main pulley size. This aftermarket DPK maintains BMW quality standards and an extra spare is included for emergency situations.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandActive Autowerke
Part Number13-001
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy