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RR Racing Air/Oil Separator for Lexus ISF R2
Lexus Air/Oil Separator

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Our Price: $209.99

Availability: Usually Ships in 2 to 3 Business Days
Product Code: ISFAOS0002

High Flow PCV Valve:

Hose Color*:


Please note this is a R2 release of our famous Air/Oil Separator System with improved hoses available in Black, Blue or Red colors (see catalog photos) and new black anodized bracket with white lettering (not shown)!

The ISF air/oil separator is a by product of our IS-F track development program. During on track testing and data logging, it became clear that the PCV (Positive Crankcase Ventilation) was allowing for significant ingestion of oil into the engine. Oil ingestion results in ignition retard due to the low octane of engine oil as it burns up. Additionally, oil burning in the engine results in carbon deposits on the intake valves, pistons, and combustion chamber which further increases the propensity for power-robbing detonation. You don't have to take your IS-F to the track to benefit from our Air/Oil Separator. Anyone who drives aggressively on twisty roads with hard acceleration and deceleration will benefit from avoiding oil ingestion into the engine.

The RR-Racing IS-F air/oil Separator is an fully sealed design featuring an advanced zero maintenance air oil separator with a level indicator for easy inspection. We utilize only the finest quality fittings and urethane hoses. All you have to do is check the level indicator and periodically empty the canister.

This is the second version of our AOS product. In this version the canister has almost three times the capacity, and we made a change in the bracket design to better fit Lexus ISF.

We now offer an optional high flow PCV valve. Our experience is that the OEM PCV valve often fails, and is difficult to access since it is located underneath the intake manifold. Failed OE PCV valves result in idle issues, check engine lights, and excessive crankcase pressures.

All components in this product are proudly engineered and manufactured here in the United States of America.

Please click on one of the links below for more relevant detailed information about our approach to engineering great products for your Lexus:

RR Racing Lexus IS-F Project.

Compatibility Table
Make Model Year Range
Lexus IS-F 2008-2013

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 3 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 June 13, 2023
Reviewer: Daniel Tarin from Las Vegas, NV United States  

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  0 of 0 people found the following review helpful:
5 of 5 Installment May 29, 2023
Reviewer: Johann Vega from Silver Spring, MD United States  
Made it really easy to install with the instructions they sent. Looks close to oem and made the car run better

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  0 of 0 people found the following review helpful:
5 of 5 Best on the market February 13, 2023
Reviewer: Ray Perez from fredericksburg, VA United States  
Super straight forward install and looks great

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