Breathe Deeper. Sound Meaner.

BMW N52B30 Dual-Source Cold Air Intake & Airbox System

E82 / E88 128i & E90 / E91 / E92 / E93 328i, 330i — Built for the N52

Dual-Source Cold Air Feed Sealed, Heat-Isolated Airbox Sharper Throttle Response Bolt-On Kit

Fits BMW E82/E88 128i and E90/E91/E92/E93 328i / 328xi / 330i (N52B30 3.0L)
Also fits BMW E90/E91 325i / 325xi / 323i / 323xi (N52B25 2.5L)
Does NOT FIT any other N52 model outside E9X E82 & E88 (e.g. 525i, X3 2.5si). Also not compatible with turbocharged E9X N54/N55 models.

Why You'll Want It

Dual-Source Air Feed: Draws cold air through the factory front scoop duct and adds a second lower inlet pulling air from the headlight area — more usable volume than a single-path setup, even at low road speed.
Sealed Airbox Construction: A fully enclosed custom housing keeps the filter isolated from engine bay heat, so the air charge reaching the throttle body stays cooler and denser.
High-Flow Filter Included: Replaces the restrictive factory paper element with a high-flow filter matched to the housing for a straighter, less obstructed path.
Purpose-Built MAF Housing: Sized and shaped to keep the factory MAF sensor properly positioned in the airstream — no check-engine surprises from a mismatched sensor bore.
Induction Sound, Dialed In: Opens up the six-cylinder intake note under acceleration for a noticeably more mechanical, aggressive pull without turning your daily into a drone box.
ASA Construction: Engineering-grade, heat- and UV-resistant material built to live in the engine bay long-term — won't warp, sag, or go brittle.

Complete Kit

Custom dual-source airbox (front scoop + lower headlight-area inlet)
Matched MAF sensor housing
High-flow performance air filter
All mounting hardware
Digital install guide

Finish: Raw ASA (unpainted). Leave it aggressive, or sand/paint to match your build.

Quick Specs

Engine: N52B30 (E82 128i, E9X 328i/328xi) & N52B25 (E9X 325i/325xi, 323i/323xi)
Chassis: E82/E88 (128i only) • E90/E91 (325i, 325xi, 323i, 323xi, 328i, 328xi) • E92/E93 (328i, 328xi only)
Material: ASA (heat/UV resistant)
Air Path: Dual-source (front scoop + lower inlet)
MAF Housing: Included, factory sensor position maintained
Lead Time: 2–3 weeks before shipment

Install Notes

Direct replacement for the factory airbox — mounts using the existing front scoop duct connection.
Lower inlet routes to the headlight-area opening for the secondary air feed; confirm clear routing on your specific model year before final install.
MAF housing bolts in place of the factory unit — no sensor recalibration or tune required.
Please allow 2–3 weeks for your kit to be built, inspected, and shipped — this is a lower-volume kit with a longer lead time than our standard listings.
Aftermarket performance part — install at your own risk.

Shipping Lead Time

This is a lower-volume kit built in small batches. Please allow 2–3 weeks from order date before your kit ships. If you need it by a specific date, message us first and we'll let you know if that's realistic.

Proudly built and shipped from Toronto, Canada. Cross-border orders ship compliant with CUSMA/USMCA — no surprise duties for US buyers.

HEADS UP: This intake will make your N52 pull harder and sound like it means it.

Have questions about compatibility or install? Message us with your model, year, and engine code and we'll confirm this kit fits your build before you order.

CONTACT US TO CONFIRM FITMENT

Inertia Werks — Performance engineered. Street proven.