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

Clear BMW chassis

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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Rein Silicone Vacuum Hoses - Blue - 5 Meters (3.5mm ID)

TEST ETS TESTa TEST ETS TESTa TEST ETS TESTb TEST ETS TEST2 TEST ETS TESTa

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T#:379090

Part#: 11731259996-5

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Sale - Save 17% $ 38.99

This product was last offered at the strikethrough price on
03-17-2026

$ 32.29 USD

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$ 38.99

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$ 32.29 USD

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This silicone hose has an inner diameter of 3.5mm and outer diameter of 7.5mm, is blue in color, and arrives in a 5 Meter section that can be cut down to size. 1 1 1 1 1

Rein Cloth Braided Fuel/Vacuum Hose - Black - 5 Meter

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T#:378470

Part#: N203531-5

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This product was last offered at the strikethrough price on
07-27-2026

$ 59.84 USD

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$ 80.05

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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID

Rein Silicone Vacuum Hoses - Black - 5 Meters (3.5mm ID)

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T#:51848535

Part#: 51731257971-5M

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This product was last offered at the strikethrough price on
08-31-2026

$ 37.04 USD

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This silicone hose has an inner diameter of 3.5mm and outer diameter of 7.5mm, is black in color, and arrives in a 5 Meter section that can be cut down to size.

Air Intake Boot

For vehicles with production date up to 09/1998

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T#:378872

Part#: 13711432410

Ships in 2 Business Days

$ 64.34 USD

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$ 64.34 USD

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Located between mass air flow meter and intake manifold

Bremmen Parts Intake Boot - E39

For vehicles with production date up to 09/1998 and with secondary throttle body

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T#:399456

Part#: 13541740931

Ships in 1-2 days

Sale - Save 5% $ 28.55

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

$ 27.12 USD

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This product was last offered at the strikethrough price on
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$ 27.12 USD

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Intake boot for the air flow meter

Intake Boot

For vehicles with production date from 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:591892

Part#: 13541435625

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This product was last offered at the strikethrough price on
08-31-2026

$ 19.94 USD

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Boot that attaches to the mass air sensor

1 Meter Vacuum Hose (3.5x7.5)

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T#:9448313

Part#: 11727545323-1M

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$ 8.99 USD

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$ 8.99 USD

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Used in many locations on the engine

4MM Silicone Vacuum Hose - Red - 9 Feet

T#:370918

Part#: VC04R

In Stock

Sale - Save 10% $ 15.99

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

$ 14.36 USD

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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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Rein Cloth Braided Fuel/Vacuum Hose - Black - 1 Meter

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T#:363139

Part#: N203531-1

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Sale - Save 5% $ 12.99

This product was last offered at the strikethrough price on
08-31-2026

$ 12.34 USD

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$ 12.99

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$ 12.34 USD

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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID

Air Intake Boot

For vehicles with production date from 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:38676207

Part#: 13541435627

In Stock

Sale - Save 24% $ 15.99

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

$ 12.23 USD

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$ 15.99

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$ 12.23 USD

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Conti Tech Vacuum Hose (3.5x7.5) - 1 Meter

We Price Match - Give Us A Call or Chat!

T#:374693

Part#: 11727545323

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$ 8.25 USD

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$ 8.25 USD

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Used in many locations on the engine

Rein Silicone Vacuum Hoses - Blue - 3 Feet

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T#:378472

Part#: 11731259996-1

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08-31-2026

$ 5.80 USD

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$ 5.80 USD

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Replace your cracked or frayed vacuum lines. 3.5mm

Air Intake Boot

For vehicles with production date from 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:377526

Part#: 13541435627

Ships in 2 Business Days

$ 12.99 USD

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$ 12.99 USD

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Connects directly to the throttle body

Intake Boot

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T#:402080

Part#: 13547505838

In Stock at Vendor

Sale - Save 5% $ 19.99

This product was last offered at the strikethrough price on
08-31-2026

$ 18.99 USD

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Connects to the mass airflow meter

Intake Boot

For vehicles with production date up to 09/1998 and with secondary throttle body

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T#:402027

Part#: 13541740931

Ships in 4 Business Days

Sale - Save 5% $ 18.99

This product was last offered at the strikethrough price on
08-31-2026

$ 18.04 USD

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Intake boot for the air flow meter

Rein Air Intake Boot - E39, E46, Z3

For vehicles with production date from 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:362650

Part#: 13541435627

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

$ 14.24 USD

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Connects directly to the throttle body

Forge Silicone Vacuum Hoses

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

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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.

4MM Silicone Vacuum Hose - Blue - 9 Feet

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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$ 13.46 USD

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

4MM Silicone Vacuum Hose - Black - 9 Feet

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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$ 14.99

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$ 13.46 USD

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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

T#:594356

Part#: 13541703726

In Stock

$ 30.81

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

$ 22.99 USD

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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.

3MM Silicone Vacuum Hose - Red - 9 Feet

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
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$ 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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