BMW 3 Series E90 (2006-2011)

Rein Silicone Vacuum Hoses - Black - 5 Meters (3.5mm ID)

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T#:51848535

Part#: 51731257971-5M

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08-31-2026

$ 37.04 USD

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$ 37.04 USD

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This silicone hose has an inner diameter of 3.5mm and outer diameter of 7.5mm, is black in color, and arrives in a 5 Meter section that can be cut down to size.

Rein Turbocharger Vacuum Reservoir - E chassis - N54

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T#:53856273

Part#: 11652247620

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$ 24.74 USD

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The Rein Automotive OE Series vacuum reservoir is engineered to maintain peak pneumatic response within your vehicle’s forced induction system.

Rein Charge Air Intake - E82, E88, E9x, E84 - N55

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T#:53856280

Part#: 13717615026

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$ 199.27 USD

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Rein Automotive OE Air Intake Hose is a precision-manufactured component designed for teams and owners who refuse to compromise on volumetric efficiency.

Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55

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T#:53750144

Part#: CHU0629

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$ 53.93 USD

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Upgraded Coolant Hose from Rein Featuring Metal Flanges to Reduce Leaks

Active Autowerke Rotrex Traction Fluid - 1 Liter

T#:57616348

Part#: RTF-1L

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$ 240.00 USD

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$ 240.00 USD

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Rotrex superchargers utilize a unique traction drive system that sets it apart from other centrifugal-style superchargers. For best performance, Rotrex recommends replacing this fluid every 50,000 miles. This bottle of traction fluid is plenty enough for one supercharger service (typically 750ml).

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Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X

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T#:52516266

Part#: ELC0090

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$ 66.49 USD

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The Rein ELC0090 is a critical component for BMW N52-series engines, replacing the often-ignored "angle connector" located beneath the intake manifold.

Rein Aluminum Power Steering Pump Pulley - E Chassis M3, M5, M6 - S65...

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T#:53750179

Part#: PKP0122

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$ 52.95 USD

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Upgrade the Plastic Pulley in Your BMW with an All Aluminum Construction Replacement from Rein

Water Pump Service Kit

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T#:57616366

Part#: 115175869251

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$ 1,260.18 USD

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Refresh your cooling setup with full confidence and protect your investment against heat-induced power loss.

Water Pump Service Kit

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T#:57616362

Part#: 1151758692550

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$ 1,201.28 USD

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This CRP/Rein service kit offers an all-in-one overhaul solution designed to restore maximum cooling system integrity.

Water Pump Service Kit

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T#:57616365

Part#: 115175869253

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$ 1,202.05 USD

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Engineered to deliver factory-level reliability, the Rein Electric Water Pump Service Kit is an essential maintenance upgrade for your BMW.

Coolant Pipe

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T#:57616351

Part#: 11537802632

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$ 205.69 USD

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Keep your M57 diesel engine running cool and leak-free with this premium replacement engine coolant pipe engineered by Rein Automotive.

Water Pump Service Kit

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T#:57616363

Part#: 115175869259

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Sale - Save 5% $ 1,687.99

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$ 1,603.14 USD

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Protect your high-performance driving machine from the devastating consequences of thermal overload with the Rein Water Pump Service Kit.

Active Autowerke - S65 Power Pulley DPK Belt Kit - E9X M3

For vehicles with production date from 6/2008

T#:50934275

Part#: 13-001D

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$ 75.00 USD

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$ 75.00 USD

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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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Water Hose

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T#:57616352

Part#: 17127599452

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$ 60.06 USD

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$ 60.06 USD

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Rein Automotive cooling hoses are designed as precision OEM-quality replacements that withstand the rigorous demands of hard driving.

Active Autowerke Supercharger Kit Gen 2 Level 4 - E9X M3 S65 4.0L ...

T#:57616347

Part#: 12-032-C38

Ships on Sep 18, 2026

$ 23,749.00 USD

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$ 23,749.00 USD

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The Active Autowerke Supercharger System is powered by a Rotrex C38-92R Supercharger Unit mounted with a custom CNCed bracket that uses a dedicated drive belt system, while eight high flow fuel injectors are used to supply the additional required fuel. Active Autowerke's Performance Software, available for 91-93 octane, race gas, and octane levels unique to other countries, is carefully calibrated, and is at the heart of the system to provide an unparalleled driving experience. Keeping within the factory's OBDII parameters, the Active Autowerke Supercharger System ensures consistency for everyday driving. The Level 4 system includes a water/methanol injection system with upgraded pulley and custom software.

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Rein Magnetic Transmission Drain Plug

2X Entries Into Our F80 M3 Sweepstakes

T#:53785537

Part#: HWU0117

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$ 16.09 USD

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Magnetic Rein Transmission Plug Features Aluminum Construction with OE Dimensions and Threading. Magnetic Tip for Upgrade over Stock. Lightweight and Durable Construction Designed to Interface Perfectly with Modern Alloy Gear Housings

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Rein Silicone Vacuum Hoses - Black - 5 Meters (3.5mm ID)

Rein Turbocharger Vacuum Reservoir - E chassis - N54

Rein Charge Air Intake - E82, E88, E9x, E84 - N55

Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55

Active Autowerke Rotrex Traction Fluid - 1 Liter

Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X

Rein Aluminum Power Steering Pump Pulley - E Chassis M3, M5, M6 - S65...

Water Pump Service Kit

Water Pump Service Kit

Water Pump Service Kit

Coolant Pipe

Water Pump Service Kit

Active Autowerke - S65 Power Pulley DPK Belt Kit - E9X M3

Water Hose

Active Autowerke Supercharger Kit Gen 2 Level 4 - E9X M3 S65 4.0L ...

Rein Magnetic Transmission Drain Plug

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