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BMW Intake Boots & Hoses for BMW 8 Series E31 (1991-1997)

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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.

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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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.

Genuine BMW Hose Connector - E31 850Ci, E31 850CSi

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T#:7297

Part#: 13711725816

Ships in 4 Business Days

4% off MSRP $ 49.99

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$ 47.99 USD

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4% off MSRP

$ 49.99

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$ 47.99 USD

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GENUINE BMW FUEL PREPARATION CONNECTOR 13711725816
Fits BMW Engines including:
M70,M73,S70

Genuine BMW Vacuum Hose

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T#:37535

Part#: 11747797129

In Stock

Sale - Save 7% $ 42.00

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$ 38.85 USD

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$ 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 Intake Boot - Cylinders 7-12 - E31 850Ci, E31 850CSi ...

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T#:43008

Part#: 13711733302

In Stock

Sale - Save 20% $ 100.99

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$ 80.32 USD

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$ 100.99

This product was last offered at the strikethrough price on
05-02-2026

$ 80.32 USD

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Genuine BMW Connector - Zyl.7-12

Fits BMW Engines including:
M70,S70

Genuine BMW Air Intake Boot - E31 840Ci 850Ci 850CSi

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T#:43002

Part#: 13711729992

Ships in 4 Business Days

$ 82.99 USD

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$ 82.99 USD

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Genuine BMW RUBBER BOOT
Fits BMW Engines including:
M60,M62,M70,M73,S70

Genuine BMW Intake Boot - Cylinders 1-6 - E31 850CSi, E31 850Ci ...

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T#:43007

Part#: 13711733301

Ships in 4 Business Days

4% off MSRP $ 105.99

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

$ 101.99 USD

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4% off MSRP

$ 105.99

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$ 101.99 USD

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Genuine BMW Connector - Zyl.1-6

Fits BMW Engines including:
M70,S70

Air Duct - E31

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T#:116786

Part#: 51712252004

Special Order: No Guaranteed ETA

1% off MSRP $ 512.99

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

$ 508.99 USD

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1% off MSRP

$ 512.99

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$ 508.99 USD

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Genuine BMW Air Duct - M Technic

Genuine BMW Intake Boot - E31 840Ci M60 M62

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T#:42896

Part#: 13711433838

Special Order: No Guaranteed ETA

64% off MSRP $ 185.99

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

$ 66.99 USD

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64% off MSRP

$ 185.99

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$ 66.99 USD

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Genuine BMW RUBBER BOOT
Fits BMW Engines including:
M60,M62

Hamburg Tech Air Intake Boot - BMW E31 8-Series M60 M62 M70 M73 S70 ...

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T#:50626661

Part#: 13711729992

In Stock

$ 43.99 USD

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$ 43.99 USD

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This boot connects directly to the intake air box. Replace your torn intake boot to prevent dirty, unfiltered air from entering your intake tract.

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

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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Genuine BMW Intake O-Ring - E31, E32, E38, E39, E46, E53

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T#:1180760

Part#: 13711731893

Ships in 2 Business Days

$ 9.99 USD

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$ 9.99 USD

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Seals the intake intake boot

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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$ 175.99

This product was last offered at the strikethrough price on
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$ 166.75 USD

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Replace your cracked or frayed vacuum lines. 3.5mm

Air Channel - E31

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T#:38939

Part#: 12311747565

Ships in 6 Business Days

6% off MSRP $ 17.99

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$ 16.99 USD

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6% off MSRP

$ 17.99

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$ 16.99 USD

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Genuine BMW AIR CHANNEL
Fits BMW Engines including:
M60,M62

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