The Perrin Performance Subaru Impreza WRX & STi short ram intake system features an aluminium MAF sensor housing, silicone hose from the turbo inlet to MAF housing, mounting bracket, and high-flow dual-stage foam air filter. Perrin's Impreza WRX & STi short ram intake uses proper MAF sizing and placement to optimize power, maintain safe air/fuel ratios, and extract as much power as possible. The Perrin Subaru WRX & STi short-ram intake can be converted to a cold-air intake using the optional Perrin Cold Air Extension, sold separately. Perrin's dual-stage foam air filter can be recharged using the Perrin filter cleaning kit, sold separately.

Returns; Exchanges; Good Merchandise

Returns of good merchandise may be accepted by AirIntakeHeaven.com in its sole discretion under the following conditions:

1. Return/Exchange of merchandise in totally re-saleable condition, without markings on the original packaging will be restricted to extraordinary circumstances with prior approval from AirIntakeHeaven.com. Accepted return will be assessed a 30% restocking charge.          

2. Return/Exchange of merchandise in packaging that has been marked, relabeled or otherwise defaced will be restricted to extraordinary circumstances with prior approval from your AirIntakeHeaven.com. Accepted return will be assessed a 30% restocking charge, except that AirIntakeHeaven.com merchandise returned in packaging that has been marked, relabeled or otherwise defaced will be subject to a 40% restocking charge.  

3. Merchandise classified by AirIntakeHeaven.com as TB (To Be Discontinued), or DC (Discontinued), may not be returned for credit.

4. Merchandise on sales promotion or inventory packages may not be returned for credit.

5. Buyer must pay all return transportation charges.

6. Buyer must obtain and complete an RMA form, issued by AirIntakeHeaven.com, for any good merchandise return or exchanges.

7. Returns/Exchanges will not be accepted under any circumstances after 30 calendar days after the ship date indicated by AirIntakeHeaven.com.

8. Any returns for non-fitment or quality issues will require high quality digital pictures of the products to be emailed to the account manager before an RMA is approved.

9. Order cancellations will take up to 48 hours after a cancellation is requested before the order is officially cancelled and money processed for return.