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BMW Intake Boots & Hoses for BMW 2 Series F44 (2020+)

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

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T#:378470

Part#: N203531-5

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Sale - Save 25% $ 80.05

This product was last offered at the strikethrough price on
06-09-2026

$ 59.84 USD

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Sale - Save 25%

$ 80.05

This product was last offered at the strikethrough price on
06-09-2026

$ 59.84 USD

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

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

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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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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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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.

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

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T#:51848535

Part#: 51731257971-5M

In Stock

Sale - Save 5% $ 38.66

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

$ 36.73 USD

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Sale - Save 5%

$ 38.66

This product was last offered at the strikethrough price on
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$ 36.73 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.

1 Meter Vacuum Hose (3.5x7.5)

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T#:9448313

Part#: 11727545323-1M

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$ 7.99 USD

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$ 7.99 USD

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Used in many locations on the engine

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

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T#:363139

Part#: N203531-1

In Stock

Sale - Save 5% $ 12.99

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

$ 12.34 USD

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Sale - Save 5%

$ 12.99

This product was last offered at the strikethrough price on
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$ 12.34 USD

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

Genuine BMW Hose Clamp 07129952104

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T#:6533

Part#: 07129952104

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$ 3.99 USD

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$ 3.99 USD

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GENUINE BMW HOSE CLAMP 07129952104

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

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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

In Stock

Sale - Save 5% $ 6.11

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

$ 5.80 USD

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Sale - Save 5%

$ 6.11

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$ 5.80 USD

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Replace your cracked or frayed vacuum lines. 3.5mm

Bremmen Filtered Air Pipe w/ Resonator - BMW F44 F48 F39 B46/B48 2.0L...

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T#:50381392

Part#: 13717619268

In Stock

Sale - Save 18% $ 125.99

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

$ 102.99 USD

Limited Qty Sale

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$ 125.99

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05-03-2026

$ 102.99 USD

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Replacement turbo inlet pipe matching the factory design - Connects the intake air box to the turbo inlet

Vacuum Hose (3.5x7.5) - 1 Meter

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T#:53644191

Part#: 11727545323-1

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$ 41.99 USD

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$ 41.99 USD

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Rein Silicone Vaccum Hose - Black - 65 Feet

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T#:378475

Part#: 5173125797120BLK

Ships in 3 Business Days

Sale - Save 5% $ 175.99

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

$ 166.75 USD

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$ 175.99

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

$ 166.75 USD

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Replace your cracked or frayed vacuum lines. 3.5mm

Rein Cloth Braided Fuel/Vacuum Hose - Black - 20 Meter

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T#:378471

Part#: N203531-20

Ships in 3 Business Days

Sale - Save 5% $ 363.52

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

$ 345.34 USD

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Sale - Save 5%

$ 363.52

This product was last offered at the strikethrough price on
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$ 345.34 USD

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

Genuine BMW Filtered Air Pipe w/ Resonator - BMW F44 F48 F39 B46/B48 ...

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T#:191295

Part#: 13717619268

Ships in 2 Business Days

4% off MSRP $ 312.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 301.99 USD

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4% off MSRP

$ 312.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 301.99 USD

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Factory replacement turbo inlet pipe - Connects the intake air box to the turbo inlet

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