BMW Intake Boots & Hoses for BMW Z4 M Roadster S54 (2003-2008)

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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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Turner Silicone Throttle Body Intake Boot Set - S54
For vehicles with production date up to 10/2004 only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Turner Motorsport - Corporate Logo
T#:588713
Part#: 003313TMS03
In Stock
Sale - Save 25% $ 147.99

This product was last offered at the strikethrough price on
06-14-2026

$ 110.99 USD
Free Shipping
Sale - Save 25%
$ 147.99

This product was last offered at the strikethrough price on
06-14-2026

$ 110.99 USD
Free Shipping
Highly durable under street or race conditions, including forced induction applications. Durable 3 ply construction. Add your preferred clamps to install.
Silicone Throttle Body Boot Set - S54 With Clamps
For vehicles equipped with a CSL airbox or vehicles with production date up to 10/2004 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date up to 10/2004 only
Turner Motorsport - Corporate Logo
T#:596826
Part#: 003313TMS03KT
In Stock
Sale - Save 25% $ 170.99

This product was last offered at the strikethrough price on
06-14-2026

$ 128.24 USD
Free Shipping
Sale - Save 25%
$ 170.99

This product was last offered at the strikethrough price on
06-14-2026

$ 128.24 USD
Free Shipping
Highly durable under street and race conditions, including forced induction applications. Includes euro-style screw clamps.
BMW S54 Silicone Throttle Body Boot Set - With Clamps
For vehicles with production date from 10/2004 only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 10/2004 only
Turner Motorsport - Corporate Logo
T#:4565830
Part#: 016229LA01
In Stock
Sale - Save 25% $ 178.99

This product was last offered at the strikethrough price on
06-14-2026

$ 134.24 USD
Free Shipping
Sale - Save 25%
$ 178.99

This product was last offered at the strikethrough price on
06-14-2026

$ 134.24 USD
Free Shipping

BMW S54 Silicone Throttle Body Boot Set - With Clamps is an essential upgrade for any BMW S54 engine, designed to replace aging and deteriorating rubber intake boots. Engineered by Turner Motorsport, these silicone throttle body boots provide superior durability and reliability under both street and race conditions, including boosted applications. Unlike simple silicone reducers, these boots are meticulously designed with the same internal features as the originals, ensuring a perfect factory fitment. The three-ply construction offers enhanced strength and longevity, making them slightly thicker than the factory boots. This set includes six boots and compatible clamps, providing a complete solution at a fraction of the cost of OEM replacements.

  • Enhanced Durability: Three-ply construction withstands heat cycling, vibrations, and oil exposure.
  • Perfect Fit: Designed with factory fitment in mind, including all internal features of the originals.
  • Complete Set: Includes six boots and compatible clamps for a full replacement.
  • Cost-Effective: Less than half the price of OEM replacement boots.
  • Versatile Compatibility: Fits all intake plenums, including US, CSL, and replicas using OE-style boots.
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Silicone Intake Boot - E46 M3 S54
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Turner Motorsport - Corporate Logo
T#:4662415
Part#: 028521TMS05-02
In Stock
Sale - Save 17% $ 153.99

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

$ 127.99 USD
Free Shipping
Sale - Save 17%
$ 153.99

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

$ 127.99 USD
Free Shipping

Flexible silicone smooths the intake tract while allowing for a range of performance intakes fitments. The ultimate in durability!

In most vehicle applications, the rubber intake elbow found in the intake system is not designed for performance or modification. They were designed to get the job done but when you add a performance filter, intake or tune, the stock elbow will start to show it weakness. The stock rubber elbows disrupt air flow as it passes over the accordion sections causing unwanted turbulence and negating the effects of intake modifications.

With high quality 4 ply construction, the Turner intake boot is strong but flexible, ensuring a secure fit on an OEM or aftermarket intake system. A smooth interior ensures unimpeded airflow, while a smooth, unassuming exterior adds to any engine bay.

Benefits:

Improved throttle response,
Increase induction sound
Increased power output - and power output, Best when paired with an ECS drop-in air filter.(ES4461001 or ES4460965)

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