BMW Intake Boots & Hoses for BMW 3 Series E46 (1999-2005)

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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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Febi Air Intake Boot - E39, E46, Z3
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Febi - Corporate Logo
T#:381821
Part#: 13541435627
In Stock at Vendor
$ 20.18

This product was last offered at the strikethrough price on
05-11-2026

$ 17.72 USD
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$ 17.72 USD
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Connects directly to the throttle body
OEM Rein Air Intake Boot - E46 Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:386410
Part#: 13541438759
In Stock
$ 29.99

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

$ 16.99 USD
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$ 16.99 USD
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This intake boot connects directly to the throttle body. Susceptible to cracking over time, this boot could be the cause of a check engine light, showing that the engine is running lean, and rough idle issues.
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URO Throttle Body Boot - E46 M3, Z3 M
For vehicles with production date up to 10/2004
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:43750230
Part#: 11612466477
Ships in 2 Business Days
$ 25.99 USD
Free Shipping on orders $49 and up
$ 25.99 USD
Free Shipping on orders $49 and up
This hose attaches the intake plenum to the throttle body, six required per vehicle.

Rein Air Intake Boot - E39, E46, Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:362650
Part#: 13541435627
In Stock
$ 16.99

This product was last offered at the strikethrough price on
06-11-2026

$ 14.99 USD
Free Shipping on orders $49 and up
$ 14.99 USD
Free Shipping on orders $49 and up
Connects directly to the throttle body

Burgaflex - Corporate Logo
T#:596612
Part#: 13541435627
Ships in 4 Business Days
$ 20.99

This product was last offered at the strikethrough price on
09-26-2026

$ 14.99 USD
Free Shipping on orders $49 and up
$ 14.99 USD
Free Shipping on orders $49 and up
Eliminate boost-robbing intake leaks and safeguard your engine’s power delivery with the Burgaflex Air Intake Boot.
Burgaflex - Corporate Logo
T#:596613
Part#: 13541705209
Ships in 4 Business Days
$ 16.99

This product was last offered at the strikethrough price on
09-26-2026

$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up
This intake boot from Burgaflex is built to European standards, providing the reliable sealing needed to keep your powertrain running at peak efficiency.

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

This product was last offered at the strikethrough price on
09-18-2026

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
09-18-2026

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.
3" To 2.5" Silicone Coupler 3" Length
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:363896
Part#: 003402ECS04A-02
Special Order: No Guaranteed ETA
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
Free Shipping on orders $49 and up

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
Back Ordered
Sale - Save 19% $ 167.99

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

$ 136.79 USD
Free Shipping on orders $49 and up
Sale - Save 19%
$ 167.99

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

$ 136.79 USD
Free Shipping on orders $49 and up

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#:370919
Part#: VC04B
In Stock
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
09-18-2026

$ 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
09-18-2026

$ 13.46 USD
Free Shipping on orders $49 and up
Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter. 
Forge - Corporate Logo
T#:370915
Part#: VC03R
In Stock
Sale - Save 10% $ 14.99

This product was last offered at the strikethrough price on
09-18-2026

$ 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
09-18-2026

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

This product was last offered at the strikethrough price on
09-18-2026

$ 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
09-18-2026

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