Crawford Air Oil Separator 02-07 WRX / 04-07 STI

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Our Price: $384.95

Product Code: S0715B.S0714B

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Description

Crawford Air Oil Separator 02-07 WRX / 04-07 STI

*The AOS is located in the same location as the cruise control for the 02-07 WRX and STi. The cruise control will need to be removed or relocated for the AOS to fit.

In the stock configuration, the crankcase is vented to the intake system in three different places. Each of these vents have a baffle system built within the motor to minimize the transfer of oil to the intake, but some oil can still make its way into the combustion chambers. When the oil enters the combustion chambers, it effectively lowers the octane of the fuel, leading to detonation.

– The first step in the process is a large volumetric swirl pot. The function of the swirl pot is to use centrifugal force to remove the oil from the air. The air is then passed through a second chamber and extracted through the top of the AOS. Gravity then sends the remaining oil down the walls of the swirl pot and collects in the bottom of the AOS. At this point the separated oil sitting on the bottom of the AOS is returned to a baffled chamber in the center of the engine block.

– The second step involves a second chamber located within the first chamber. As the separated air moves up inside the AOS, it must enter the second chamber before it can vent out the top of the AOS. The function of the secondary chamber is to remove any residual oil that may have made its way up the swirl pot. The secondary chamber also has a drain to return any separated oil back to the engine.

INCLUDES

- Crawford Air/Oil Separator (powder coated)

- Crank case breather connector "Y"

- 5/8" hose: 23" and 18" lengths

- 1/2" hose: 29", 16", 15", 12" lenghts

- 1 large rubber cap

- 1 1/4" pipe plug

- 9 large zip ties

- 1 small zip tie

- 4 hose clamps

- 14" fire sleeve

- 2 bolts