Vacuum hose size chart

944 turbo

 

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Vacuum fitting chart

Item description

Item Key

Fitting size / barb size

Blow off valve (compressor bypass valve)

H

5.0mm / 6.0mm

Throttle body

C

3.8mm / 4.8mm

Black & blue check valve (near fire wall)

 

5mm on black side 5.2mm on blue side

Temperature valve

I

Both fittings are 5mm at the base reducing to 4mm at the tip

Heater valve

 

5.0mm

Control valve (metal)

K

4.0mm

Shut-off valve (plastic)

J

4.95mm

Inlet manifold small barb

 

3.5mm / 4.5mm

Inlet manifold large barb

 

5.0mm / 6.0mm

Pressure damper

3

5.3mm / 6.0mm

Pressure regulator

4

5.3mm / 6.0mm

Wastegate

 

5.6mm / 6.8mm

 
NAPA - Orange Vacuum hose sizes 7/64 (2.8mm) 5/32 (3.96mm) 7/32 (5.56mm) 1/4 (6.35mm)

 

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