K&N BMW F90 M5 & F91 F92 F93 M8 S63 Engine High Flow Air Filters

Unlock your BMW’s true performance potential with the K&N High-Flow Air Filters (33-3128), engineered specifically for the BMW F90 M5 and F91/F92/F93 M8 with the S63 4.4L Twin-Turbo V8 engine. Designed to replace your factory filters directly, these precision-built filters deliver measurable gains in horsepower, torque, and throttle response — all while providing superior engine protection and long-term savings.

Each filter is built using four layers of premium cotton gauze, treated with a specially formulated tacking agent to create an intricate filtration mesh capable of trapping up to 99% of harmful contaminants without restricting airflow. The result is cleaner, denser air entering your engine for improved combustion efficiency and sharper throttle response.

Manufactured to exacting standards, K&N’s filters feature rugged construction, a washable and reusable design, and a no-hassle lifetime limited warranty. They’re pre-oiled and ready to install straight out of the box — a simple yet highly effective upgrade that complements both factory and tuned applications.

Key Features

• Engineered for performance: Designed to increase horsepower, torque, and acceleration

• Durable construction: Built using premium materials for long-lasting reliability

• Four layers of protection: Multi-layer cotton gauze filtration with high dust retention

• Washable & reusable: Clean every 75,000 miles under normal driving conditions

• Cost-effective: Reusable design saves money over multiple disposable filters

• Eco-friendly: Reduces waste from single-use air filters

• Easy installation: Direct replacement for OEM filters — no tuning required

• High efficiency: Up to 99% filtration efficiency with maximum airflow

• Lifetime warranty: Backed by K&N’s limited lifetime guarantee

Technical Specification

• Filter Type: Panel

• Material: Cotton Gauze

• Washable: Yes

• Dimensions: 10.375" L x 8.5" W x 1.188" H

• Weight: 2.1 lb (1 kg)

• Included: 2 air filters (pair required)

• Product Line: K&N High-Flow

Compatibility

• BMW F90 M5 (2018–2025)

• BMW F91 M8 Convertible (2020–2025)

• BMW F92 M8 Coupé (2020–2025)

• BMW F93 M8 Gran Coupé (2020–2025)

• BMW 760i / 760i xDrive (2023–2026)

• BMW M760e xDrive (2023–2025)

• Compatible with S63 4.4L Twin-Turbo V8 engines (2 filters required)

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.