BMW 5 Series E34 (1987-1995)

OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...

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T#:38890943

Part#: HWU0065

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$ 23.99 USD

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As components in the differential begin to wear, metal particles become loose in the diff fluid, which can lead to excess wear. This magnetic plug pulls these particles out of suspension, helping to reduce wear over time. Replaces BMW # 33117525064

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Rein Power Steering Reservoir

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T#:592377

Part#: 32416851217

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$ 26.07

This product was last offered at the strikethrough price on
04-23-2026

$ 21.50 USD

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Replaces your cracked and leaking reservoir

Rein Driveshaft Center Mount - E30, E32, E34

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T#:375738

Part#: 26121226723

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$ 43.99 USD

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Used to support the center of the driveshaft

Rubber Mounting 22316771221

For vehicles with manual transmission only

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T#:20746

Part#: 22316771221

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$ 22.99 USD

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RUBBER MOUNTING 22316771221

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

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T#:379090

Part#: 11731259996-5

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$ 38.99

This product was last offered at the strikethrough price on
03-17-2026

$ 33.99 USD

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

Rein Oil Pan Gasket - E34, E36, E39, E46, E53, E60, E61, Z3

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T#:370783

Part#: 11131437237

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$ 28.99 USD

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Metal / Rubber gasket

Rein Cloth Braided Fuel/Vacuum Hose - Black - 5 Meter

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T#:378470

Part#: N203531-5

In Stock

$ 80.05

This product was last offered at the strikethrough price on
06-09-2026

$ 62.99 USD

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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID

Rein Piston Ring Set

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T#:379819

Part#: 11251437077

Ships in 3 Business Days

$ 31.99 USD

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Standard bore replacement piston rings

Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36

For vehicles with a production date up to 09/1992

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T#:379806

Part#: 11251713192

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$ 30.99 USD

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For use on stock pistons, will need 6 sets to replace all piston rings in the engine

Aluminum Thermostat Housing Kit - M50

T#:397222

Part#: 14-009

In Stock

$ 56.99

This product was last offered at the strikethrough price on
06-18-2026

$ 52.99 USD

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$ 56.99

This product was last offered at the strikethrough price on
06-18-2026

$ 52.99 USD

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Plastic thermostat housing cracked on your M50?

Here are your choices: you can wait for the plastic factory thermostat housing cover to break and cause major overheating. (Even with a new stock cover, it won’t take long.) Or you can install a thoughtfully engineered all-aluminum thermostat housing cover from Active Autowerke and never experience this type of failure again. Currently there is no factory upgraded part to this problem. This is an aluminum extruded part that has all of the openings machine properly to fit like factory; from the mounting bolt holes, the seating of the thermostat to the sealing opening for the ORANGE gasket. Forged to exact factory tolerances, everything fits and this unit is a true easy bolt-on – especially suited for racing or load conditions like heavy traffic, where engine temp can rise rapidly. The housing is guaranteed never to break from overheating or over-tightening, and its CNC machined surface ensures a precise seat.

Unit comes complete with a new ORANGE sealing gasket; a new thermostat is recommended but not included.
For hotter climates, a 71 degree thermostat is recommended over the 82 degree unit.

Anything and everything BMW is the mantra at Active Autowerke. Since 1981 they have been serving the BMW community with custom turbocharger kits to a myriad of other innovative and inspiring performance parts.

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OEM Rein Power Steering Pump - New - E34, E39

Not for cars with Self Levelling Suspension.

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T#:599641

Part#: 32411141570

In Stock

$ 244.99

This product was last offered at the strikethrough price on
06-29-2026

$ 226.99 USD

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$ 226.99 USD

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Direct replacement power steering pump

Rein Water Pump Pulley - E34, E36, E39, Z3

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T#:591716

Part#: 11511730554

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$ 49.99 USD

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Located behind the fan blade, fan clutch bolts to this pulley

Rein Rear Crankshaft Seal - E30, E32, E34, E36, E39, E46, E53, E60, E...

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T#:361056

Part#: 11142249533

In Stock at Vendor

$ 22.99 USD

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Replace when doing a clutch job.

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

T#:51848535

Part#: 51731257971-5M

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$ 38.66 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.

Active Autowerke Rotrex Traction Fluid - One Liter

T#:397307

Part#: 12-032

Ships in 1 Business Day

$ 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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BMW Oil Separator Valve | M60 3.0 / 4.0L

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T#:39059261

Part#: 11151747066

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$ 31.99 USD

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BMW Oil Separator Valve | M60 3.0 / 4.0L is a vital component that ensures proper crankcase ventilation by separating oil vapors from blow-by gases, preventing excessive oil consumption and maintaining engine efficiency. Designed for BMW models equipped with the M60 3.0L and 4.0L engines, this oil separator valve helps reduce carbon buildup and extends the life of essential engine components. For optimal results, it is recommended to replace the valve cover and crankcase ventilation system (CCV) when changing the separator valve.

Effectively separates oil vapors to prevent excessive oil consumption
Helps maintain proper crankcase ventilation for optimal engine performance
Reduces carbon buildup and prolongs engine longevity
Direct-fit replacement for BMW M60 3.0L and 4.0L engines
High-quality materials ensure durability and resistance to engine heat
Recommended to replace valve cover and CCV for complete system maintenance

Ensure the longevity and efficiency of your BMW engine by replacing a worn oil separator valve with this high-quality replacement.

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Rein Thermostat - 88ï¿½C - E30, E34, E36, Z3

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T#:591800

Part#: 11537511580

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$ 37.99 USD

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$ 37.99 USD

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Common point of failure in the cooling system.

Rein Tie Rod Assembly - E24, E28, E31, E32, E34

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T#:379667

Part#: 32211135668

Ships in 3 Business Days

$ 45.99 USD

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$ 45.99 USD

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Fits both left and right

Engine Mount - Left

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T#:379691

Part#: 11811094149

In Stock

$ 64.99

This product was last offered at the strikethrough price on
05-07-2026

$ 54.99 USD

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$ 64.99

This product was last offered at the strikethrough price on
05-07-2026

$ 54.99 USD

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Keep your engine secure.

Rein Radiator Hose - Upper - E32, E34

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T#:6960

Part#: 11531722682

In Stock at Vendor

$ 63.99 USD

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$ 63.99 USD

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BMW ENGINE WATER HOSE 11531722682.--

This item fits the following BMWs:
BMW 5 Series -535i
BMW 7 Series - 735i, 735iL

--.

Rein Power Steering Line - E32, E34

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T#:592364

Part#: 32411141505

Ships in 3 Business Days

$ 27.99 USD

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Connects the steering box to the power steering cooler

Active Autowerke Signature Trunk Emblem

T#:590914

Part#: AASIGNATUREPLAQU

Ships in 3 Business Days

4% off MSRP $ 45.00

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

$ 43.00 USD

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4% off MSRP

$ 45.00

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

$ 43.00 USD

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Stand out from the crowd, and give them a hint of what you've got going on under the hood, with the official Active Autowerke Signature Emblem! The emblem can be placed anywhere on the exterior, or interior of your BMW. Hefty stainless steel construction and durable double-sided tape will help ensure that it is never lost, even at speeds over 170+ MPH...Don't ask us how we know! Represent your favorite BMW tuner for all to see today!

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OEM Rein Throttle Body Return Hose - E34 525i

For vehicles with a production date from 03/1991

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T#:379743

Part#: 11531738054

Ships in 3 Business Days

$ 61.99 USD

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$ 61.99 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

OEM Rein Power Steering Feed Line - E34 525i

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T#:19766

Part#: 32411139448

Ships in 3 Business Days

$ 63.99 USD

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This OEM Rein power steering feed line replaces the line that runs from the reservoir to the pump. Replace your leaking hoses before damage occurs to the power steering rack or pump.

OEM Rein A/C Evaporator Assembly - E31 E32 E34

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T#:379644

Part#: 64118391277

Ships in 3 Business Days

$ 270.99 USD

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$ 270.99 USD

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Have a leak in your A/C system but can't find it? The evaporator allows the refrigerant within the A/C system to lose pressure and cool down, allowing it to transfer that chill to the air coming out of the dash vents. If leaking, the A/C system will lose refrigerant and not function how it should.

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Rein Exhaust Valve - E34, E36, E39, E46, Z3

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T#:379738

Part#: 11341739823

Ships on Aug 4, 2026

$ 20.99 USD

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$ 20.99 USD

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Replacement exhaust valve

OEM Rein Engine Mount - Right - E31 E34 E32

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T#:379814

Part#: 11811094150

Ships in 3 Business Days

$ 57.99 USD

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$ 57.99 USD

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This is an OEM Rein engine mount designed to replace your old hardened or broken mount.

OEM Rein Oil Cooler Line O-Ring - Multiple BMWs

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T#:15159

Part#: 17222245358

In Stock

$ 4.99 USD

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$ 4.99 USD

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This is the sealing o-ring used for many oil cooler kits on various BMW models. They're also a prime source for oil leaks because the o-ring gets 'flat' or shrinks or becomes damaged. These are usually easy to change though which puts an end to annoying small oil leaks.

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Rein Bump Stop - E30, E34, E38

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T#:379728

Part#: 31331124449

In Stock

$ 9.15 USD

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$ 9.15 USD

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Provides additional support in the front suspension

Rein Thermostat O-Ring (60 X 3.5 mm) - E28 E30 E32 E34 E36 E39 Z3 E23...

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T#:591144

Part#: 11531265084

In Stock

$ 2.05 USD

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$ 2.05 USD

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This O-ring seals the thermostat to the cylinder head.

OEM Rein Shifter Ball Bushing - Multiple BMWs

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T#:362834

Part#: 25111220600

In Stock

$ 7.57 USD

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$ 7.57 USD

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This bushing is the point where the shifter arm pivots. If you are experiencing excess play in your shifter, this could be the cause. Worn out shifter ball bushings allow too much movement from wear over time.

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OEM Rein Expansion Tank Cap - BMW E32 E34 E36 E38 E39 E46 & More ...

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T#:340541

Part#: 17111742231

In Stock

$ 17.99 USD

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$ 17.99 USD

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This radiator expansion tank cap is used most BMW's from 1991-2006. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.

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Rein Oversize Valve Guide

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T#:379717

Part#: 11121735533

In Stock

$ 9.67 USD

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$ 9.67 USD

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12.7mm (+0.2mm)

Rein Exhaust Valve - Sold Each - E28, E30, E34

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T#:584424

Part#: 11341708896

In Stock

Sale - Save 9% $ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD

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Sale - Save 9%

$ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD

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Replace your worn valves

Rein Exhaust Gasket - E31, E34, E36, E38, Z3

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T#:348948

Part#: 18301716888

In Stock

$ 10.99 USD

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$ 10.99 USD

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Gasket between header and catalytic converter

Rein O-Ring - E28, E30, E34

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T#:6693

Part#: 11151714390

In Stock

$ 6.99 USD

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$ 6.99 USD

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OEM BMW ENGINE O-RING 11151714390

Black Wheel Bolt - Priced Each - Standard Size

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T#:379155

Part#: 36136781150

In Stock

$ 3.99 USD

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$ 3.99 USD

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Standard size - 12x1.5x26mm

Rein Expansion Tank Hose - E12, E21, E23, E24, E28, E30, E32, E34 ...

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T#:19431

Part#: 17121712736

In Stock

$ 13.99 USD

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$ 13.99 USD

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VENT HOSE 17121712736 Manufactured by CRP

Water Pump to Thermostat Cooling Hose - E30 E34 E28

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T#:6917

Part#: 11531287651

In Stock

$ 10.99 USD

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$ 10.99 USD

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Replace your cracked or leaking coolant hose with this radiator coolant hose that goes from the waterpump to the thermostat on cars with the M20 engine. We recommend inspecting cooling system hoses for dry rot / cracks yearly.

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1982-1988 E28 BMW 528e
1989-1990 E34 BMW 525i

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Differential Oil Drain Plug

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T#:27405453

Part#: 33117525064

In Stock

$ 11.99

This product was last offered at the strikethrough price on
05-21-2026

$ 9.99 USD

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$ 9.99 USD

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Rein Exhaust Manifold Nut

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T#:363427

Part#: 11721437202

In Stock

$ 2.03 USD

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$ 2.03 USD

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This metal nut mounts to the back of the flange on the exhaust manifold towards the engine.

Rein Silicone Vacuum Hoses - Blue - 3 Feet

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T#:378472

Part#: 11731259996-1

Ships in 1 Business Day

$ 6.11 USD

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$ 6.11 USD

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Replace your cracked or frayed vacuum lines. 3.5mm

Rein Coolant Bleeder Screw CHW1575 - Priced Each

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T#:591955

Part#: 17111712788

In Stock

$ 4.99 USD

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$ 4.99 USD

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Coolant Bleeder Screw is a critical component for maintaining your BMW’s cooling system. Designed to release trapped air from the coolant lines, this screw ensures efficient coolant flow and prevents overheating. Specifically engineered for BMW models, it enhances the overall performance and longevity of your engine by maintaining proper temperature regulation. Comes with O-Ring.

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Rein Self-Locking Nut

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T#:12678

Part#: 18301737774

In Stock

$ 4.99 USD

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$ 4.99 USD

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Be sure to install new hardware with your new parts to ensure proper tightening and fitment. This is an M10 self-locking nut, used in various locations in the vehicle. Be sure to check for proper size and application prior to ordering.

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Rein Water Pump O-Ring (Small) - E32, E34, E38, E39

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T#:379680

Part#: 11531710055

In Stock

$ 2.03 USD

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$ 2.03 USD

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When it comes time to replace the water pump, be sure to replace all the O-Rings associated with it to ensure that your car stays leak free. If you are experiencing leaking issues, be sure to inspect these rings, as they might have worn down. This specific ring is used when replacing water pump on cooling pipe to the water accumulator. There are two per car.

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Rein Cloth Braided Fuel/Vacuum Hose - Black - 1 Meter

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T#:363139

Part#: N203531-1

In Stock

$ 12.99 USD

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$ 12.99 USD

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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID

Rein Driveshaft Center Support Bearing

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T#:379700

Part#: 26121225071

In Stock

$ 13.50 USD

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Qty

$ 13.50 USD

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Commonly referred to as "carrier bearing"

Rein Crankcase Ventilation Hose - E34, E36

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T#:379698

Part#: 11151726828

Ships in 3 Business Days

$ 9.17 USD

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$ 9.17 USD

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Connected to valve cover connector

Rein Water Hose (Right Outlet) - E32 E34

Also use- (Qty.) (1) 17 21 1 723 943 O-Ring. ¦ Right

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T#:593082

Part#: 17221728944

Ships in 3 Business Days

$ 28.99 USD

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Qty

$ 28.99 USD

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Transmission Oil Cooler to Water Manifold

OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 ...

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T#:379685

Part#: 24311422671

Ships in 3 Business Days

$ 10.99 USD

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$ 10.99 USD

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The input shaft seal on your transmission ensures that you will not experience any fluid loss from behind the guide sleeve. If you have a leak, be sure to replace it as soon as possible to avoid losing too much fluid, which can ultimately damage your transmission.

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