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- USA
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
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For Your Every Summer RSVP, with Code: SUMMER15
Description
APR Air-To-Water Intercooler System - Audi / B9 / 2.9T / RS4 / RS5The APR Air to Water Intercooler System for the B9 RS4 RS5 2. 9T EA839 offers a substantial leap in performance that directly translates to more horsepower and torque, and consistent performance that's unmatched by the factory cooler. The factory cooler struggles to cool the charged air resulting in excessive intake air temperature due to its small size. This struggle results in ECU protecting the engine by pulling power during a single quarter mile
The APR Air-to-Water Intercooler System for the B9 RS4 / RS5 2.9T EA839 offers a substantial leap in performance that directly translates to more horsepower and torque, and consistent performance that's unmatched by the factory cooler. The factory cooler struggles to cool the charged air resulting in excessive intake air temperature due to its small size. This struggle results in ECU protecting the engine by pulling power during a single quarter mile pass, lap around a track, or even during a spirited drive. Simply bolting on the APR System relieves this issue, resulting in an instant boost in power and consistency. The APR system has no trouble remaining consistent thanks to its ability to resist power-robbing heatsoak!
Features:
- 194% larger than the factory intercooler
- 5,500cm³ vs the undersized 1,870cm³ factory unit
- Dramatically lowers intake air temperature
- Consistently more horsepower and torque
- Flows more than stock at every measured pressure differential
- CFD optimized cast aluminum end tanks
- Proprietary aluminum cooling core
- CNC machined and tig welded construction
- Application specific coolant hoses
- Application specific ez-flow charge air hoses
- CNC bent and laser cut brackets
- Does not negatively impact emissions
- Does not require tuning
- Instructions and support included
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Great shoe: 5th pair purchased!
I love these shoes! They fit true to size and never wear out. Both of my girls have worn these exclusively from 9 months through kindergarten. My oldest just learned to tie laces and that’s the only reason I’m moving her on to different shoes. These are stylish and they grow out of them before the tread even begins to show wear. Additionally, unlike cheap sneakers from Walmart or Target the Velcro holds strong despite a year of use by two different children.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2019
★★★★★ 5
Great purchase!
My child is 14 months and has been on the move for a long time, these shoes are so great, he moves great in them and never has a problem wearing them!
They are slightly narrow so the strap doesn’t go all the way, but has never come undone!
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Reviewed in the United States on August 10, 2023
★★★★★ 5
Worth every penny
My son’s favorite shoes! High quality, very durable, look nice even when they aren’t freshly cleaned. Easy to take on and off. Definitely worth the money! This color tends to go with everything. Such great support.
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Reviewed in the United States on June 15, 2021
★★★★★ 5
Perfect fit.
Color: Grey/Navy/Green, Size: 3.5 Big Kid
Nice looking shoes, Saucony is always very durable for my child and myself. Very comfortable and fit perfectly. Great for just hanging out or running.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
👍
Super cute and comfortable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
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