K&N High-Flow Washable Reusable Air Filter for BMW 1 Series 135i N55 (E81 E82 E87 E88) 2007–2012 | Drop-In Panel OEM Replacement Performance Filter

K&N High-Flow Washable Reusable Air Filter for BMW 1 Series 135i N55 (E81 E82 E87 E88) 2007–2012 | Drop-In Panel OEM Replacement Performance Filter

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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Upgrade your BMW 1 Series 135i with a K&N Performance Air Filter for maximum airflow, filtration and reusable value. This direct replacement panel filter is designed for the BMW 1 Series E81, E82, E87 and E88 135i with the N55 engine, model years 2007 to 2012. It drops straight into the factory airbox, improving horsepower and acceleration while maintaining excellent engine protection. Ideal if you want a simple, hassle free intake upgrade that works with original equipment electronics and does not void your warranty.

At Nforcd we run K&N filters on our own cars and our customers consistently report sharper throttle response, smoother acceleration and the convenience of a washable, reusable filter that pays for itself over time. It is a proven performance upgrade for the BMW 135i N55 and a smart alternative to disposable paper filters.

Key features and benefits

  • Designed to boost horsepower and rate of acceleration on BMW 1 Series 135i N55
  • High airflow with exceptional filtration for reliable engine protection
  • Washable and reusable drop in replacement panel filter
  • Fits the factory air box for an easy, tool free install on E81, E82, E87, E88
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Will not void your vehicle warranty
  • Covered by K&N’s famous Million Mile Limited Warranty

Why choose this BMW 135i air filter

This K&N performance air filter is a simple, cost effective BMW 1 Series intake upgrade that increases airflow compared to a standard paper filter. More airflow helps the N55 turbocharged engine breathe better for improved acceleration and responsiveness. Because it is washable and reusable, you save money over repeated paper filter replacements and reduce waste without compromising filtration.

Fitment

BMW 1 Series 135i N55 engine 2007 to 2012: E81, E82, E87, E88. If you are unsure about compatibility, contact us and we will confirm fitment for your registration or VIN.

Fitting service

Simple drop in installation at home, or we can fit it for you at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.

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