BMW Intake Boots & Hoses for BMW 5 Series E39 (1996-2003)

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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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Forge - Corporate Logo
T#:558490
Part#: FORGEVAC
In Stock
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
08-29-2026

Starting at $ 13.46 USD
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$ 14.99

This product was last offered at the strikethrough price on
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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.
3" To 2.5" Silicone Coupler 3" Length
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:363896
Part#: 003402ECS04A-02
Ships in 5 Business Days
Sale - Save 10% $ 9.99

This product was last offered at the strikethrough price on
06-13-2026

$ 8.99 USD
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Sale - Save 10%
$ 9.99

This product was last offered at the strikethrough price on
06-13-2026

$ 8.99 USD
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3" To 2.5" Silicone Coupler 3" Length

Enhance the performance and durability of your BMW or MINI with the 3" To 2.5" Silicone Coupler 3" Length. This silicone coupler provides a reliable connection between components, ensuring optimal airflow and reducing the risk of leaks. Engineered for durability and heat resistance, it withstands high temperatures and harsh conditions. Upgrade your BMW or MINI with this premium silicone coupler for improved performance.

  • Reliable connection for optimal airflow
  • Reduces the risk of leaks for enhanced performance
  • Engineered for durability and heat resistance
  • Fits both BMW and MINI models
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Air Intake Boot Refresh Kit with High-Flow Panel Filter
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:26771752
Part#: M52TUBTFLTRKT2
Ships on Feb 1, 2027
Sale - Save 19% $ 167.99

This product was last offered at the strikethrough price on
05-03-2026

$ 136.79 USD
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Sale - Save 19%
$ 167.99

This product was last offered at the strikethrough price on
05-03-2026

$ 136.79 USD
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If you're seeking to eradicate vacuum leaks and enhance the overall airflow of your intake system, look no further than this comprehensive kit.

The M52TU/M54 air intake boots have gained notoriety for their tendency to crack, resulting in vacuum leaks, triggering check engine lights, and causing various performance issues. The soft rubber boots are constantly exposed to high temperatures from the engine, leading them to become brittle and prone to cracking over time. These cracks permit unmeasured air intake beyond the airflow meter, resulting in rough idling, sputtering, or even engine stalls.

This kit offers a solution by providing both lower and upper air intake boots/hoses for a complete repair. Additionally, as a bonus, the kit includes an ECS Exact-Fit High-Flow Air Filter to optimize your vehicle's intake tract.

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Forge - Corporate Logo
T#:370917
Part#: VC04
In Stock
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
08-29-2026

$ 13.46 USD
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Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
08-29-2026

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Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter. 

Forge - Corporate Logo
T#:370919
Part#: VC04B
In Stock
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This product was last offered at the strikethrough price on
08-29-2026

$ 13.46 USD
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Sale - Save 10%
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This product was last offered at the strikethrough price on
08-29-2026

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Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter. 
Intake Boot
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594356
Part#: 13541703726
In Stock
$ 30.81

This product was last offered at the strikethrough price on
06-15-2026

$ 22.99 USD
Limited Qty Sale
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$ 30.81

This product was last offered at the strikethrough price on
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$ 22.99 USD
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This is the rubber intake boot that the Mass Air Meter clamps to. If your boot has rotted or deteriorated it will cause a rough idle and poor performance.

Forge - Corporate Logo
T#:370915
Part#: VC03R
In Stock
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
08-29-2026

$ 13.46 USD
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Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
08-29-2026

$ 13.46 USD
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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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