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.
| Name | Value |
|---|---|
| Brand | K&N Filters |
| Type | Gen I Air Intake System |
| Features | Durable |
| Performance Part | Yes |
| Manufacturer Part Number | 57S-4000 |
| Country/Region of Manufacture | United States |
| Items Included | Roto Mold Tube |
Fitment
| Make | Model | Year | Engine |
|---|---|---|---|
Please contact us regarding fitment information. |
Our Range of Products
Top 7 Reasons to Upgrade to a K&N Air Filter
- Enhanced Performance: K&N air filters are designed to improve airflow, allowing your engine to breathe easier and generate more power. This can lead to noticeable gains in horsepower and acceleration.
- Cost Savings Over Time: Unlike disposable filters, K&N air filters are washable and reusable. This means you only need to buy one filter for the lifetime of your vehicle, saving you money in the long run.
- Superior Filtration: K&N filters provide excellent filtration, protecting your engine from harmful particles and debris. This helps maintain engine health and performance.
- Easy Maintenance: Cleaning and re-oiling a K&N filter is straightforward and can be done at home. This convenience adds to the overall value and longevity of the filter.
- Eco-Friendly: By using a reusable filter, you reduce waste and contribute to a more sustainable environment. This is a small but impactful way to lessen your environmental footprint.
- Material: K&N's reusable High-Flow Air Filter enhances performance by combining pleated, breathable cotton with their signature red filter oil. Unlike paper filters that clog quickly, K&N's oiled cotton filter absorbs dirt and dust, allowing up to 50% more airflow. This ensures a continuous flow of clean air into your engine. Additionally, while disposable filters need replacement every 12-15,000 miles, K&N filters can last up to 100,000 miles before requiring cleaning under normal driving conditions.
KNFILTERSHOP Filter Shop is an authorized retailer of K&N on eBay.
For over 50 years, K&N has been an industry-leader in automotive filtration and technology - offering products to increase performance, protection, and longevity in thousands of vehicle applications for consumers worldwide.
K&N products are designed and manufactured on-site. K&N is headquartered in Riverside, California, in a building complex spanning nearly 400,000 square feet, and also operates facilities in Grand Prairie, TX, England, China, and the Netherlands. K&N facilities include departments for engineering, product design, manufacturing, warehousing, test facilities, purchasing, sales, customer service, marketing, and corporate offices.
Our Return Policy:
We hope you will love your purchase, however if you need to return it, we have a 60 day return policy.
Shipping Information:
We despatch everyday Monday - Friday.
All in stock orders placed before 2pm will be despatched the same day.
We ship orders with recognised couriers, mostly Fedex, DPD or Royal Mail.
All orders will come with a tracking number for you to follow with the courier.
For any more information please do not hesitate to get in touch.
We do our best to have items listed that are in stock, feel free to get in touch if you want to double check.
PayPal is the preferred payment method.
All items are not reserved or processed until payment is received.
K&N 10-Year/ Million Mile Limited Warranty
This warranty covers defects in materials and workmanship of your K&N OE Replacement Air Filter, Intake System and Industrial Air Filter (the "Product"), with the exceptions stated below. This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use, or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters)..
K&N 5-Year Limited Warranty - Industrial
This warranty covers defects in materials and workmanship of your K&N Industrial Air Filter (the "Product"), with the exceptions stated below.This warranty only covers use on specific applications and applies to use as intended for. It is the customer's responsibility to provide K&N with the intended application prior to installation.
K&N 3-Year/ 300,000 Mile Limited Warranty
This warranty covers defects in materials and workmanship of your K&N Commercial Grade Diesel Air Filter (the "Product"), with the exceptions stated below. This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use, or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
K&N "NO-Hassle" Lifetime Limited Warranty
This warranty covers defects in materials and workmanship of your K&N OE Replacement Air Filter and Intake System (the "Product"), with the exceptions stated below. This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use, or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
K&N 90-Day Limited Warranty
This warranty covers defects in materials and workmanship of your All K&N POWERLID, Clothing, Promotional Material or Raw Material (the "Product"), with the exceptions stated below. This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
K&N "NO-Hassle" Lifetime Limited Warranty
This warranty covers defects in materials and workmanship of your K&N OE Replacement Air Filter and Intake System (the "Product"), with the exceptions stated below. This warranty does not cover damage due to (a) transportation, (b) storage, (c) improper use, (d) failure to follow the Product instructions or to perform any preventive maintenance, (e) modifications, (f) unauthorized repair, (g) normal wear and tear, (h) any type of racing or competition, (i) any off-road use, or (j) external causes such as accidents, abuse, or other actions or events beyond our reasonable control (e.g., acts of God and natural disasters).
