aFe 50-70105R Momentum GT Pro 5R Cold Air Intake for 20-25 BMW X3/X4 M40i 3.0L

Vehicle Fitment

• 2020-2024 BMW X3 M40i (3.0L I6, AWD - B58 engine)
• 2020-2025 BMW X4 M40i (3.0L I6, AWD - B58 engine)

Fitment Notes

• Will fit Hybrid Models
• Cold air intake system -- replaces factory airbox and intake tube.
• Designed specifically for the B58 3.0L turbo-charged inline-6 in BMW X3/X4 M40i.
• Non-CARB exempt -- not legal for sale or use in California on pollution-controlled vehicles.
• No engine tuning required for stock turbo/boost setups; verify vehicle is M40i and stock intake system.

Features

• Large 6.5" tall 360-degree radial-flow Pro 5R air filter for increased airflow.
• One-piece sealed XLPE (cross-linked polyethylene) housing with clear sight-window for inspection.
• Mandrel-designed intake tube optimized for factory mounting and minimal heat soak.
• Dyno-tested gains of up to +21 HP and +24 lb-ft torque over stock intake.
• Washable & reusable filter element -- cost-effective over time.
• All necessary couplers, clamps, and mounting hardware included for plug-and-play installation.
• Engine sound enhancement via increased induction tone while retaining daily drive manners.

Specifications

• Part Number: 50-70105R
• Product Line: Momentum GT Pro 5R Cold Air Intake
• Expected Gains: Up to +21 HP / +24 lb-ft TQ
• Filter Type: Pro 5R oiled cotton gauze media
• Housing Material: XLPE polymer
• Includes: Intake tube, couplers, clamps, Pro 5R filter
• Legal Status: Not CARB exempt (USA) -- off-road only in California

Included Components

• 1x Sealed intake housing with clear sight-window
• 1x Pro 5R air filter element
• 1x Intake tube assembly
• All required silicone couplers and stainless-steel clamps
• Mounting brackets/hardware and installation instructions

Product Description

The aFe 50-70105R Momentum GT Pro 5R Cold Air Intake is designed exclusively for the BMW X3 M40i and X4 M40i models (2020-24) equipped with the B58 3.0L inline-6 turbo engine. By replacing the stock airbox and intake system with this high-flow sealed system featuring a large Pro 5R filter, you'll experience improved throttle response, better airflow, and measurable performance gains without sacrificing daily-driving manners.

With simple bolt-on installation using factory mounting points and included hardware, the system requires no additional engine tuning when used on stock turbocharged setups. The Pro 5R washable filter and sealed housing make this intake a long-term performance investment. The only caution: this part is not CARB exempt and may be for off-road use only in regulated states such as California.