Grimmspeed Air Oil Separator Black
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Grimmspeed Air Oil Separator Black

The Grimmspeed Air-Oil Separator (AOS) is one of RallySport Direct's highly sought after items. Grimspeed uses...

Grimmspeed Air Oil Separator Black

The Grimmspeed Air-Oil Separator (AOS) is one of RallySport Direct's highly sought after items. Grimspeed uses a unique patent pending design which allows you to maintain your PCV valve while separating oil from the air in both the heads and crankcase. These boxer engines have inherent issues with harmful oil and vapors getting into the intake system of your vehicle which can cause issues like having an effect on the octane rating with your gas, and after long periods of use and mileage can cause buildup on your valves.

This particular air-oil separator takes the place of an oil catch can, or a tank which is convenient to eliminate the need to empty the catch can. This is a subtle installation that replaces your factory oil filler cap.

New lines, fittings, and zip ties will be included to make this catch can system ready for the installation. 

Note that this particular unit will come in the anodized black finish for protection against corrosion, and to add a nice touch to the theme of your engine bay. 

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We ship in majority of our products. If we do not have stock on the item, it will be in our distribution channel. The item should arrive no later than 15 days, unless it is a special item.

Returns Policy

Special items are not valid for returns if the manufacturer has already finalized the purchase order. Refunds can be applied within 15 day period of receiving the items. Items must be brand new, returned in the same condition as they were. Refunds on items like electronics, Turbochargers, Turbo Kits, Superchargers are at the discretion of Elevate Autosports and their distribution partners.


All items labelled in stock should be received no later than 15 days. In the event, an item takes longer, someone from our customer service team will reach out to give an ETA of the item(s). For special items, ETA's come from the vendor. Timeframes will be updated once we receive the ETA from the vendor.

If a product is defective, we will process it back with the manufacturer. The item needs to be returned within 7 business days for us to expedite the process. The item needs to be in the same condition as it was received, and not installed on the car...

if you need to cancel your order, please contact us at If your order has not processed yet, than we will be able to cancel the order. If your order is in processing, or has shipped…you must go through the complete return process in order to obtain a refund for your order. For more information about the terms and conditions which apply to your return, please refer to our Return Policies page..

Yes. We will price match any major brand that we can. We will either match or beat it, or we will have a substitute product line that we will offer to you!.

If you think you’ve received the wrong product, please double check the part number on the product label, with the part number listed on your packing slip. If those numbers do not match, please contact before opening the product. We recommend having your Order number on hand to expedite your call. For special items, if you ordered the wrong item, we will work with out distributors to returning the item and getting the proper one for you!

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