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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
K&N Performance Intake Kit for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5The K&N 57S 4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S 4000 Performance Airbox comes with an
The K&N 57S-4000 Performance Airbox replaces the restrictive factory air filter and air box lid. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S-4000 Performance Airbox comes with an oversized conical K&N high-flow air filter and an injection molded air box lid with the K&N logo embossed on top. The air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This performance air box is relatively easy to install into the air box base with commonly available tools. K&N builds these air box systems to last for the life of your vehicle and they are backed by K&N's Million Mile Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.Installation Instructions
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2017 | Ford | C-Max | Energi SE |
| 2013-2016 | Ford | C-Max | Energi SEL |
| 2017 | Ford | C-Max | Energi Titanium |
| 2013-2017 | Ford | C-Max | Hybrid SE |
| 2013-2016 | Ford | C-Max | Hybrid SEL |
| 2017 | Ford | C-Max | Hybrid Titanium |
| 2016-2018 | Ford | Focus | RS |
| 2013-2015 | Ford | Focus | S |
| 2013-2015 | Ford | Focus | SE |
| 2013-2018 | Ford | Focus | ST |
| 2013-2015 | Ford | Focus | Titanium |
| 2014-2016 | Ford | Transit Connect | Titanium |
| 2014-2016 | Ford | Transit Connect | XL |
| 2014-2016 | Ford | Transit Connect | XLT |
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
4.4 ★★★★★
Based on 847 reviews
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Product Reviews
★★★★★ 5
Doggo liked the treats
Size: 3-Pack
Doggo liked the treats
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
★★★★★ 1
Caused Vomiting
Size: 8-Pack
Caused my golden retriever to vomit many times throughout the day on her second birthday. Ruined the whole day for her - who wants to be throwing up all day on their birthday? Ugh.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
★★★★★ 5
Dog cookies
Size: 8-Pack
Very happy with these cookies. Nice big sizes and the dogs love them. They look very appetizing to humans.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value.
By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026
★★★★★ 5
Excellent dog balls — safe design and very durable
Style: Fetch Balls (Pack of 3), Size: 2.5 inch
These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference.
Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design.
Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.
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Reviewed in the United States on December 1, 2025
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