BMW 5 Series E34 (1987-1995)

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Aluminum Thermostat Housing Kit - M50
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
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
Limited Qty Sale
Free Shipping on orders $49 and up
$ 56.99

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

$ 52.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
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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Active Autowerke Rotrex Traction Fluid - One Liter
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
T#:397307
Part#: 12-032
Ships in 3 Business Days
$ 240.00 USD
Free Shipping
$ 240.00 USD
Free Shipping
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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Forge Motorsport Valve Service Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Forge - Corporate Logo
T#:28271173
Part#: FMDV004S
Ships on Aug 14, 2026
Sale - Save 12% $ 23.99

This product was last offered at the strikethrough price on
07-01-2026

$ 21.18 USD
Free Shipping on orders $49 and up
Sale - Save 12%
$ 23.99

This product was last offered at the strikethrough price on
07-01-2026

$ 21.18 USD
Free Shipping on orders $49 and up

Active Autowerke Signature Trunk Emblem
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Active Autowerke - Corporate Logo
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
Free Shipping
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
Free Shipping
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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4MM Silicone Vacuum Hose - Red - 9 Feet
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Forge - Corporate Logo
T#:370918
Part#: VC04R
Back Ordered
Sale - Save 10% $ 15.99

This product was last offered at the strikethrough price on
07-01-2026

$ 14.36 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 15.99

This product was last offered at the strikethrough price on
07-01-2026

$ 14.36 USD
Free Shipping on orders $49 and up

Enhance Engine Performance with Silicone Vacuum Line

Upgrade your car's vacuum system with the Silicone Vacuum Line, a vital component that significantly impacts engine performance. Engineered to resist heat and contaminants, this silicone hose promises exceptional durability, ensuring prolonged and reliable operation.

Featuring an inner diameter of 4mm and a vibrant red color, this silicone hose arrives in a 9-foot section, offering the flexibility to customize lengths as needed. Damaged vacuum hoses can lead to various performance issues, from rough idling to engine starting problems. Promptly replace worn-out hoses to optimize your vehicle's overall performance.

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Forge Silicone Vacuum Hoses
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Forge - Corporate Logo
T#:558490
Part#: FORGEVAC
Ships in 1-2 days
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
07-01-2026

Starting at $ 13.46 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
07-01-2026

Starting at $ 13.46 USD
Free Shipping on orders $49 and up
Car suffering from vacuum leaks? Choose from a 4mm, 5mm, or 6mm diameter vacuum hose from Forge to fix your leak and bring your BMW back to life.

4MM Silicone Vacuum Hose - Black - 9 Feet
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Forge - Corporate Logo
T#:370919
Part#: VC04B
Back Ordered
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
Free Shipping on orders $49 and up
Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter. 
3MM Silicone Vacuum Hose - Red - 9 Feet
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Forge - Corporate Logo
T#:370915
Part#: VC03R
Back Ordered
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
Free Shipping on orders $49 and up

Upgrade Your BMW with Forge 3MM Silicone Vacuum Hose - Red - 9 Feet

Upgrade your BMW's vacuum system with the Forge 3MM Silicone Vacuum Hose in Red, a high-quality solution designed for optimal performance and durability. This 9-foot silicone vacuum hose provides superior flexibility and resistance to extreme temperatures, making it ideal for various automotive applications. Engineered with precision, it ensures reliable vacuum pressure for efficient engine operation and component functionality. Whether you're replacing worn-out hoses or customizing your BMW's vacuum setup, the Forge Silicone Vacuum Hose offers reliability and performance you can trust.

  • High-quality silicone construction for durability
  • Superior flexibility for easy installation
  • Resistant to extreme temperatures
  • Ensures reliable vacuum pressure for efficient engine operation
  • Ideal for various automotive applications

Car suffering from vacuum leaks? This vacuum hose has a 3mm inner diameter. 

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4MM Silicone Vacuum Hose - Blue - 9 Feet
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Forge - Corporate Logo
T#:370917
Part#: VC04
Back Ordered
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
Free Shipping on orders $49 and up
Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter.