K&N E-0661 High-Flow Drop-In Filter for 2014-2019 Mercedes CLA45 GLA45 A45 AMG

Vehicle Fitment

• 2014-2019 Mercedes-Benz CLA45 AMG - 4Matic (C117, 2.0L Turbo I4, M133, AWD)
• 2015-2019 Mercedes-Benz GLA45 AMG - 4Matic (X156, 2.0L Turbo I4, M133, AWD)
• 2014-2018 Mercedes-Benz A45 AMG - 4Matic (W176, 2.0L Turbo I4, M133, AWD)

Fitment Notes

• AMG 2.0L M133 turbocharged engine only - does not fit standard non-AMG CLA, GLA, or A-Class models equipped with other engines
• All AMG 45-series models are AWD (4Matic) only - no RWD variants were produced
• Direct drop-in replacement into the factory airbox - no modifications or tools required
• Sold individually - one filter per vehicle

Features

• High-flow oiled cotton gauze media delivers increased airflow over the factory paper filter, supporting improved horsepower and throttle response from the M133 turbo engine
• Multi-layer cotton gauze construction with K&N's tacking agent traps contaminants without restricting the airflow demands of the high-output AMG application
• Custom-engineered to fit directly into the factory airbox on all three AMG 45 platforms - no adapters or modifications required
• Pre-oiled and ready to install straight out of the box
• Service required only every 75,000 miles under normal highway driving conditions
• Washable and reusable - eliminates recurring OEM paper filter replacement costs over the life of the vehicle
• Durable construction built to withstand the thermal and airflow demands of a high-performance turbocharged engine
• Backed by K&N's 10-Year/Million Mile Limited Warranty

Specifications

• Part Number: E-0661
• Filter Shape: Round Straight
• Filter Material: Multi-Layer Oiled Cotton Gauze
• Filter Color: Red
• Inside Diameter: 3.063 in (78 mm)
• Outside Diameter: 5.625 in (143 mm)
• Height: 6.75 in (171 mm)
• Filter Re-Oiling Amount: 1.5 oz (44 ml)
• Inner Wire: No
• Pre-Oiled: Yes - ready to install
• Service Interval: Every 75,000 miles (normal highway driving)
• Washable and Reusable: Yes
• Quantity: Sold individually
• Warranty: 10-Year/Million Mile Limited

Included Components

• 1x K&N E-0661 High-Flow Round Replacement Air Filter (pre-oiled cotton gauze)

Product Description

The K&N E-0661 is a direct drop-in high-flow replacement air filter designed for the 2014-2019 Mercedes-Benz CLA45 AMG (C117), 2015-2019 GLA45 AMG (X156), and 2014-2018 A45 AMG (W176) - all equipped with AMG's hand-built 2.0L turbocharged M133 inline-four engine and 4Matic all-wheel drive. The filter installs directly into the factory airbox on all three platforms with no modifications required, delivering K&N's signature multi-layer oiled cotton gauze filtration in place of the restrictive OEM paper element. The result is improved airflow into the M133's turbocharger, supporting better throttle response and more consistent performance delivery at the top of the rev range.

The E-0661 ships pre-oiled and ready to install, with a service interval of 75,000 miles - significantly longer than OEM paper filter replacement schedules. Its washable and reusable design eliminates the ongoing cost of disposable filters and reduces environmental waste. Backed by K&N's 10-Year/Million Mile Limited Warranty, the E-0661 is the most straightforward and cost-effective performance upgrade available for first-generation AMG 45-series owners looking to improve airflow without replacing the factory intake system.