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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VTT is proud to announce the S65 Billet Valve cover set. VTT created these for the S65 owner who wants to add a great look to their engine bay while also getting rid of the stock valve cover which are very problematic and can crack/leak/delaminate with higher mileage. Eliminating the leak-prone factory oil cap design with a threaded cap with O-ring Seal, VTT has also added two -10 ORB bungs which allow you complete freedom to plumb in a catch can, or vent system of your choice. The internal baffling is 100% in place to knock down any oil from the vapors before being expelled. Factory PCV has also been kept in place so these can be run in essentially any configuration required. 100% CNC 6061-T6 Aircraft aluminum construction Anodized in a variety of colors Lightweight; 9.7 lbs. (compared to 7.9 lbs for a stock cover – only 1.8 lbs difference) TWO shrouded -10 ORB ports which Give the end-user variety for setting up their Valve Cover and PCV System Only Billet option on the market with a threaded oil cap, and PCV choices Works with our 1' one-way breather for ultimate crankcase venting Kit includes: Two Billet Valve covers Two US-sourced Viton Gaskets
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