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BMW Intake Boots & Hoses for BMW 7 Series E23 (1978-1987)

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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

In Stock

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

In Stock at Vendor

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.

Genuine BMW Rubber Boot - E23 735i E24 635CSi M30 3.4L E28 535i ...

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T#:367832

Part#: 13541707080

In Stock

$ 43.99 USD

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$ 43.99 USD

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Intake Boot - E28 E24 E23

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T#:42839

Part#: 13711287327

Ships in 4 Business Days

4% off MSRP $ 52.99

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

$ 50.99 USD

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4% off MSRP

$ 52.99

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

$ 50.99 USD

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Replace your cracked or damaged intake air boot to maintain proper performance and engine longevity. This Genuine BMW intake hose directs air into the factory air box assembly from outside.

This item fits the following BMWs:
2/1983-1988 E28 BMW 524td 528e 533i 535i 535is M5
2/1983-1989 E24 BMW 633csi 635csi M6
2/1983-1987 E23 BMW 733i 735i

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

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T#:51848535

Part#: 51731257971-5M

In Stock at Vendor

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
06-29-2026

$ 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.

Genuine BMW Intake Tube

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T#:367864

Part#: 13711261370

In Stock

3% off MSRP $ 91.99

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

$ 88.99 USD

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3% off MSRP

$ 91.99

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

$ 88.99 USD

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Genuine BMW Air Intake Boot

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T#:7280

Part#: 13711260372

Ships in 4 Business Days

2% off MSRP $ 48.99

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

$ 47.99 USD

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2% off MSRP

$ 48.99

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

$ 47.99 USD

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GENUINE BMW FUEL PREPARATION RUBBER BOOT 13711260372
Fits BMW Engines including:
M30

Genuine BMW Vacuum Hose

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T#:37535

Part#: 11747797129

In Stock

Sale - Save 7% $ 42.00

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

$ 38.85 USD

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Sale - Save 7%

$ 42.00

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

$ 38.85 USD

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Genuine BMW Vacuum Hose Black - 3,5X2,0

Genuine BMW Throttle Body Boot - E24 633CSi E23 733i E28 533i ...

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T#:7222

Part#: 13541272472

Ships in 6 Business Days

$ 58.99 USD

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$ 58.99 USD

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GENUINE BMW FUEL PREPARATION RUBBER BOOT 13541272472.--

This item fits the following BMWs:
BMW 5 Series - 533i
BMW 6 Series - 633cSi
BMW 7 Series - 733i

--. Fits BMW Engines including:
M30

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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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$ 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

1 Meter Vacuum Hose (3.5x7.5)

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T#:9448313

Part#: 11727545323-1M

In Stock

$ 7.99 USD

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$ 7.99 USD

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Used in many locations on the engine

Genuine BMW Hose Clamp 07129952104

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T#:6533

Part#: 07129952104

In Stock

$ 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

In Stock

$ 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

Vacuum Hose (3.5x7.5) - 1 Meter

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T#:53644191

Part#: 11727545323-1

In Stock

$ 41.99 USD

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$ 41.99 USD

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Engine Vent Hose 11151276485

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T#:6676

Part#: 11151276485

Ships in 1 Business Day

$ 4.99

This product was last offered at the strikethrough price on
04-10-2026

$ 3.99 USD

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$ 3.99 USD

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ENGINE VENT HOSE 11151276485

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
06-29-2026

$ 345.34 USD

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

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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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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Replace your cracked or frayed vacuum lines. 3.5mm

Genuine BMW Breather Hose - E12 E23 E24 E3

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T#:6674

Part#: 11151261161

Ships in 4 Business Days

$ 11.99 USD

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$ 11.99 USD

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Genuine BMW Vent Hose
This item fits the following BMW Chassis:
E34 M5,E34

Fits BMW Engines including:
M30,S38

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