BMW Intake Boots & Hoses for BMW 4 Series F36 (2015+)

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The intake boot provides a pathway for air from the air flow sensor to the intake manifold. On most BMWs the boot is made of rubber with an accordian shape that allows the engine to shift and vibrate. As with any rubber component the rubber can dry out and crack and that can lead to serious running and drivability issues. A crack in the boot means that air is entering the engine that is not being monitored by the airflow sensor. The engine computer relies on data from the airflow sensor to set the fuel mixture in the engine. Excess unmetered air can result in lean condition faults, rough running, misfires, and other performance issues. For misfire and lean condition faults, check your intake boots first.

As an alternative to the original rubber, we also offer silicone boots that are both stronger and last longer with a 4-layer silicone design. Samco silicone boots can also decrease your BMW's intake turbulence and restriction by replacing the accordian design with a smoothed internal surface. Samco boots are also perfect as part of a kit to eliminate the factory traction control system (sometimes called an ASC delete boot).
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4MM Silicone Vacuum Hose - Black - 9 Feet
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
In Stock
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
Add to Wish List
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
Add to Wish List
Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter. 
3MM Silicone Vacuum Hose - Red - 9 Feet
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
Add to Wish List
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
Add to Wish List

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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