Active Autowerke Power Pulley DPK Belt Kit
- Mfg Part #
- 13-001D 13-001D
- ECS Part #
- ES#3659438
- Brand
-
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Product Details
Unlock Hidden Power from Your S65 — the ECS Tuning Way
Free up the performance your V8 is already making with the Active Autowerke Power Pulley Kit for the BMW E9X M3. Precision-engineered for the high-revving S65, this complete bolt-on solution reduces parasitic drag and rotational mass, allowing more of the engine’s true output to reach the wheels — without compromising the drivability and reliability you expect from your M3.
At the core of the system is a CNC-machined crank pulley crafted from aircraft-grade billet 6061 aluminum and finished in a durable hard-coat anodize. The result is a lightweight yet robust component built to handle the demands of performance driving while maintaining OEM-like refinement.
Active Autowerke paid special attention to late-2007+ E9X models that utilize the double-sided (DPK) A/C belt. Rather than forcing compromises, they engineered a proper solution — even producing an aftermarket DPK belt to maintain factory-style functionality. An additional spare DPK belt is included where applicable for added peace of mind.
Validated on Active Autowerke’s in-house Mustang dyno, this kit delivers a measurable gain of 10–12+ wheel horsepower on a stock M3. Installation is straightforward and fully reversible, making it an ideal upgrade for enthusiasts who want meaningful performance without permanent modification.
Why This Kit Stands Out
Proven gains of 10–12+ RWHP on stock S65 engines
Complete bolt-on design — no permanent changes required
CNC-machined 6061 billet aluminum crank pulley
Durable hard-coat anodized finish
Includes correct replacement drive and A/C belts
Extra spare DPK belt included where applicable
Compatible with DCT and manual E9X M3 models
Reduces parasitic loss and rotational mass
Engineered to avoid overheating issues common with aggressive pulley designs
Pairs perfectly with Active Autowerke software for additional gains
Available for both single-sided and DPK belt configurations
Fitment Note:
Please verify whether your E9X M3 uses a single-sided or double-sided (DPK) A/C belt prior to ordering.
A smart, OEM-minded upgrade for enthusiasts who want sharper performance without sacrificing the character of their M3.
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| BMW | E90 | M3 | S65 4.0L | Use vehicle selector to confirm fitment |
| BMW | E92 | M3 | S65 4.0L | Use vehicle selector to confirm fitment |
| BMW | E93 | M3 | S65 4.0L | Use vehicle selector to confirm fitment |
This product is not eligible for Lifetime Replacement
Return and Exchanges
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New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
Want to know more about our Lifetime Replacement program?
Click here to learn more.
Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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Prop 65 Warning