DINAN – Cold Air Intake – BMW 540i / 740i / 840i / X5 40i / X6 40i / X7 40i (16–24)

Bring your B58-powered luxury performance BMW to life with the Dinan Carbon Fibre Cold Air Intake, developed specifically for the larger ‘G’ chassis 5, 6, 7, 8, and X Series platforms. Designed to deliver both performance and sound, this intake transforms the restrained character of the factory system into one that breathes freely and sounds as powerful as it performs.

Like its smaller G-chassis siblings, this Dinan intake employs a semi-open design with multiple auditory ports on the lid to let the turbo’s spool and induction tones shine through. The restrictive stock resonator assembly, which muffles sound and airflow, is completely eliminated — replaced by an optimized, smooth-flow carbon-fibre intake tube that delivers both acoustic and performance benefits.

The redesigned system increases airflow by 20% compared to stock and features a 66% larger airbox volume and 44% larger filter area, improving throttle response, reducing turbo lag, and generating measurable power gains. When paired with the optional Dinan Turbo Inlet (D760-0061) and Inlet Fit Kit (D763-0100), the entire intake path is upgraded for even greater flow and sound, achieving a complete high-performance system.

Features & Benefits:

• +7 WHP / +12 lb-ft @ 2500 RPM on a completely stock vehicle

• Flows 20% more air than stock (416 CFM → 506 CFM @ 15" H₂O)

• 66% larger airbox volume (150 in³ → 250 in³) for increased breathing capacity

• 44% larger filter area (56.75 in² → 82 in²) for optimal flow

• Semi-open carbon-fibre design enhances turbo and induction sound

• Improved throttle and turbo response for sharper acceleration

• Optimized carbon-fibre intake tube eliminates turbulence and restrictions

• Washable, reusable high-flow cotton gauze filter

• Quick, direct bolt-on installation

• Compatible with Dinan Turbo Inlet (D760-0061) & Fit Kit (D763-0100) for maximum performance

Fitment Table: