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BMW Underdrive Power Pulleys

Reduce parasitic loss of power on your BMW's engine by safely under driving the belt driven auxiliary systems. Reducing this drag on your engine results in MORE HORSEPOWER AND TORQUE to the wheels of your BMW. Our BMW underdrive power pulley kits are specifically designed for each BMW application to make the best power while maintaining stock driveability and reliability, eliminating potential downsides. Others may advertise "their" pulleys boasting more power, but we concluded that for street and track driven BMWs, ours are the best size and design to ensure both your engine and it's belt-driven systems (alternator, water pump, power steering etc) are well within safe operation. We run these under drive pulleys on our own BMWs, so we would not want them any other way.
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Active Autowerke Power Pulley Kit - E9x M3
Active Autowerke Power Pulley Kit - E9x M3
For vehicles with production date 2007-5/2008
Active Autowerke - Corporate Logo
T#:397285
Part#: 13-001
Ships in 3 Business Days
5% off MSRP $ 399.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 379.99 USD
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5% off MSRP
$ 399.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 379.99 USD
Free Shipping
Add to Wish List
Easy to install - reduces parasitic losses from belt driven auxiliary components. Engine crankshaft pulley remains the same, this modification simply unleashes untapped potential from your vehicle. Expect to see gains around 10 RWHP from your S65. All BMW power pulleys included, including alternator, water pump, and power steering pulleys.
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ATI Super Damper / Harmonic Balancer - Stock Size - BMW B58A (Gen1), B58C B58D (Gen2/TU) 3.0L
ATI Super Damper / Harmonic Balancer - Stock Size - BMW B58A (Gen1), ...
ATI - Corporate Logo
T#:43142742
Part#: 918573
In Stock at Vendor
$ 418.99 USD
Free Shipping on orders $49 and up
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$ 418.99 USD
Free Shipping on orders $49 and up
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ATI Super Damper / Harmonic Balancer - 10% Underdrive - BMW B58A (Gen1), B58C B58D (Gen2/TU) 3.0L
ATI Super Damper / Harmonic Balancer - 10% Underdrive - BMW B58A (Gen...
ATI - Corporate Logo
T#:43142743
Part#: 918352
Back Ordered
$ 451.99 USD
Free Shipping on orders $49 and up
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$ 451.99 USD
Free Shipping on orders $49 and up
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This ATI Super Damper is a direct replacement for the OEM Harmonic Balancer, designed to further reduce harmful engine harmonics that could lead to damage to sensitive engine components. The 10% underdrive function of this super damper is designed to increase usable horsepower by reducing parasitic power loss without greatly affecting engine accessories.
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ATI Super Damper / Harmonic Balancer - 21% Underdrive - BMW B58A (Gen1), B58C B58D (Gen2/TU) 3.0L
ATI Super Damper / Harmonic Balancer - 21% Underdrive - BMW B58A (Gen...
ATI - Corporate Logo
T#:43142744
Part#: 918351
Back Ordered
$ 418.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 418.99 USD
Free Shipping on orders $49 and up
Add to Wish List
This ATI Super Damper is a direct replacement for the OEM Harmonic Balancer, designed to further reduce harmful engine harmonics that could lead to damage to sensitive engine components. The 21% underdrive function of this super damper is designed to greatly increase usable horsepower for racing applications by driving engine accessories slower, reducing overall parasitic power loss.
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