Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.
Free Up Real S65 Power — Engineered the Turner Way Your S65 is already making the power. This kit simply lets you keep more of it. The Active Autowerke Power Pulley Kit for the BMW E9X M3 reduces parasitic drag at the crankshaft, trimming rotational mass and freeing up horsepower that would otherwise be consumed by accessory drive load. The result is a measurable increase in rear-wheel output without sacrificing the balance, cooling capacity, or long-term durability expected from a properly engineered BMW upgrade. The crank pulley is CNC-machined from billet 6061 aluminum and finished with a hard-coat anodize for durability under sustained high-RPM operation. Unlike undersized pulleys that compromise system function, this design maintains proper operating characteristics while delivering real-world gains. Late-2007 production E9X M3 models transitioned to a double-sided (DPK) A/C belt configuration. Rather than forcing a workaround, Active Autowerke developed a proper DPK-compatible solution — including the correct matched belt. Applicable kits also include a spare DPK belt for added insurance. Dyno testing on a Mustang chassis dyno confirms gains of 10–12+ rear-wheel horsepower on an otherwise stock vehicle. Installation is fully reversible and requires no permanent modification. Product Highlights 10–12+ RWHP gain verified on stock S65 engines Complete bolt-on system CNC-machined 6061 billet aluminum crank pulley Hard-coat anodized finish for durability Includes correct replacement drive and A/C belts Spare DPK belt included where applicable Compatible with manual and DCT-equipped E9X M3 Reduces parasitic drag and rotational mass Designed to maintain proper operating temperatures Works in conjunction with Active Autowerke performance software Available for single-sided and double-sided (DPK) belt configurations Fitment Information Confirm whether your E9X M3 is equipped with a single-sided or double-sided (DPK) A/C belt prior to ordering to ensure correct application. A properly engineered solution for enthusiasts who want measurable gains while preserving OEM-level refinement and reliability.
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The Pure Turbos NEW Pure600 for the BMW B58 (Gen 2) is a precision-engineered turbo upgrade designed specifically for 2-port cylinder head applications, offering a substantial boost in performance without the need for a core exchange. This unit features a custom aftermarket inlet housing similar to the OEM design for a true plug-and-play installation, integrating seamlessly with your factory turbine manifold. Internally, the Pure600 is equipped with an upgraded billet compressor wheel and a high-flow turbine wheel, both optimized to increase exhaust efficiency and support power levels exceeding 550 wheel horsepower, depending on your supporting modifications and fuel type. Durability and reliability are central to this turbocharger’s design, which includes an upgraded bearing housing to withstand the increased stresses of high-load performance. To ensure smooth, long-term operation, every unit is VSR high-speed balanced to exacting standards. While the Pure600 can run on stock tunes or off-the-shelf maps, custom tuning is highly recommended to fully unlock its potential. This upgrade provides a streamlined path to elite B58 performance, combining robust engineering with a straightforward installation process that retains the refined drivability of your BMW.
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The Pure Turbos Pure400 for the BMW B48 is a precision-engineered performance upgrade designed for the first generation of BMW’s modular 2.0L inline-4 engine. This unit is built into a brand-new aftermarket housing that utilizes an OEM-style design, ensuring a seamless plug-and-play installation without the requirement of a core exchange or refundable deposit. The turbocharger features an upgraded Pure Turbos billet compressor wheel and a higher-flowing turbine wheel, which together significantly improve exhaust efficiency and airflow capacity. To maintain long-term reliability under the increased thermal and mechanical stresses of high-boost applications, the Pure400 is equipped with a heavy-duty upgraded bearing housing and undergoes meticulous VSR high-speed balancing. Engineered to support over 350 wheel horsepower, depending on fueling and supporting modifications, this upgrade provides a substantial power increase while maintaining the responsive, low-end torque characteristics of the original B48 engine. It is a direct-fit solution for a wide range of 2014–2019 F-series and G-series models, including the 230i, 330i, and X3 xDrive30i, prior to the Technical Update (TU) changes. While the hardware integrates perfectly with factory connections, custom tuning is mandatory to fully optimize the engine’s performance and ensure safe operation. This kit offers a robust and reliable path for 4-cylinder enthusiasts looking to achieve elite-level performance with a clean, factory-appearing finish.
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