# K&N Performance Intake Kit  for Ford C-Max/Focus II / Volvo C30/S40/V40/V50/V70 / Mazda 3/5

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.

-   K&N Million Mile Limited Warranty
-   Million Mile Limited Warranty

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

## Details

- **Price:** 385.65 CAD
- **Vendor:** K&N Engineering
- **Type:** Cold Air Intakes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 385.65 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Primary
- User 4
- User 4
- User 4
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/k-n-performance-intake-kit-for-ford-c-max-focus-ii-volvo-c30-s40-v40-v50-v70-mazda-3-5)
> Updated: 2026-06-27