Air and Fuel› Air Cleaners, Filters, Intakes and Components

NM Engineering

Hi-Flow Open-Air-Box Induction Kit

$290.03

SKU: NM.658857

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The NM Engineering Hi-Flow Induction Kit is an 'Open-Air-Box' system designed to provide an unrestricted 360° air source. During testing, it was found that the internal temperature matched ambient after vehicle speed exceeded 20 mph, and the Mass Air Flow (MAF) sensor logged a higher volume of air compared to OEM.

This kit is available with either a pre-oiled and cleanable filter or a dry paper filter option. It utilizes a rigid ABS plastic inlet tube, similar to NM's aluminum/silicone version for earlier models, but the tube itself is not included in this kit for economy.
Show original supplier description
The NM Engineering Hi-Flow Induction Kit replaces the OEM sealed airbox with an 'Open-Air-Box' design, offering an unrestricted 360° air source. This system aims to improve airflow, as indicated by R&D where internal temperatures matched ambient after 20 mph and the MAF sensor showed increased air volume (gr/sec). The kit's design benefits from MINI's 2011 model improvement of a rigid ABS plastic turbo intake tube, though the tube itself is not included to enhance affordability. Fitment is specific and depends on the vehicle's production date. For 2007-2012 models produced up to March, use part number NM.658857. For models produced from April 2012 onwards, use part number NM.658857.1. If a kit was purchased before December 2012 for a post-April '12 production vehicle, an updated bracket can be provided free of charge by contacting NM Engineering. This product is C.A.R.B. Exempt (EO# D-236-22) but is not for sale or use in California on any pollution-controlled vehicle as per the California Air Resources Board. It may also be subject to Prop 65 warnings.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandNM Engineering
Part NumberNM.658857
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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