K&N High-Flow Air Filters BMW M3 & M4 (G80/G81/G82/G83 – S58 3.0L)

K&N High-Flow Panel Air Filters for BMW M3 & M4 (G80/G81/G82/G83 – S58 3.0L)

Part No: 33-3171  Quantity Required: 1 set (2 filters included per box)

Your G-series M3 or M4 is already a serious piece of kit. The S58 3.0-litre twin-turbo straight-six is hugely capable out of the box – massive torque, big power and huge tuning potential. But even this engine is still breathing through restrictive, disposable paper filters that were designed around cost and emissions, not outright performance.

It’s time to let the S58 breathe properly. The K&N High-Flow Panel Air Filters (33-3171) are the ideal “first mod” for any G8X M3 or M4. Supplied as a pair to suit the twin intakes, they are a direct, drop-in replacement for the factory filters, transforming the way your engine inhales while being engineered to be the last air filters you’ll ever need to buy for the car.

Using K&N’s multi-layered, oiled cotton gauze construction, these filters offer significantly more airflow than the stock paper elements while still providing excellent filtration. In real-world driving, that means sharper throttle response, improved mid-range punch and a more purposeful induction sound every time you lean on the throttle.

Unlike the standard paper filters, these K&N elements are fully washable and reusable. When they become dirty, you simply clean them with the appropriate K&N service kit, re-oil and refit – no more throwing money away on disposable filters at every service.

Key Features & Benefits

• Built for the S58: Designed specifically for the high-output S58 3.0L twin-turbo engine used in the latest G8X M3 and M4 models.

• Increased Airflow: High-flow cotton gauze media allows the engine and turbos to draw air more freely than the restrictive factory paper filters, helping to support gains in horsepower and torque.

• Sharper Throttle Response: Noticeably more eager response and improved spool when you get on the power, especially in the mid-range.

• Reusable for Life: Fully washable and reusable – clean, re-oil and refit instead of replacing, saving money over the lifetime of the vehicle.

• Direct Drop-In Replacement: Designed to fit straight into the OEM twin airboxes with no cutting, drilling or extra hardware required.

• Excellent Engine Protection: Multi-layer oiled cotton gauze provides outstanding filtration, helping to keep dust and debris out of your S58 while still flowing far more air than paper.

• Ideal for Tuned Cars: Perfect supporting mod for Stage 1 and Stage 2 ECU remaps, downpipes and intercooler upgrades – removes a key restriction on the intake side.

MSL Recommends

All G8X M3 and M4 models use twin intake airboxes, which means they use two panel filters per car. K&N 33-3171 is supplied as a matched pair, so you only need one kit per vehicle.

We highly recommend this upgrade as:

• A simple, cost-effective performance enhancement on a completely stock G80/G81 M3 or G82/G83 M4.

• A supporting modification for tuned cars, helping your S58 make the most of extra boost and fuelling.

For long-term ownership, we also suggest keeping a K&N cleaning and re-oiling kit so you can service the filters correctly and keep them performing at their best for years to come.

Full Vehicle Fitment List

This K&N High-Flow Panel Air Filter kit (33-3171) is suitable for the following BMW models equipped with the S58 3.0-litre twin-turbo straight-six and standard twin airboxes:

• BMW M3 – G80 Saloon (including Competition and xDrive variants)

• BMW M3 – G81 Touring (including Competition and xDrive variants)

• BMW M4 – G82 Coupé (including Competition, xDrive and special editions)

• BMW M4 – G83 Convertible (including Competition and xDrive variants)

If you’re unsure whether this is the correct filter kit for your car, just get in touch with your registration or VIN and we’ll be happy to confirm compatibility before you order.