Performance Air Filter for 7 Series 1998-2001 & X5 3L

Optimize Intake Velocity for Your BMW M54 and M52 Engine Families

Who It’s For: Designed specifically for BMW 7 Series (E38) and X5 (E53) owners running the legendary M54 and M52 straight-six engines who want better throttle response without sacrificing filtration.

The Problem: The factory paper filters in these BMW airboxes are designed for silence and low cost, not airflow. Over time, these thick paper elements become a massive restriction for the M54 engine, leading to sluggish low-end torque and reduced efficiency as the engine struggles to pull air through the dense fibers.

The Solution: We use BMC’s multi-layered cotton gauze technology to correct this factory bottleneck. This filter allows for significantly higher CFM (cubic feet per minute) while capturing impurities as small as 7 microns. By utilizing a low-viscosity oil coating and an epoxy-coated alloy mesh, we ensure your M52 or M54 receives the cleanest, coldest air possible within the protected factory airbox environment.

Why This is the Ultimate Upgrade

• Enhanced Flow Dynamics: Increases airflow while maintaining the factory airbox’s protection against engine bay heat soak, which is common with "open" intake kits.
• Full Moulding Construction: Unlike cheap aftermarket filters that use glued joints, this features a "Full Moulding" system. This single-mould design prevents rubber fatigue and ensures a perfect seal against the airbox housing.
• Lifetime Durability: This is a "forever" filter. It is fully washable and rechargeable using a standard regeneration kit, meaning you’ll never have to buy a disposable paper filter again.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1998-2001 BMW 7 Series (E38 Chassis) 728i / 728iL
• 2000-2006 BMW X5 (E53 Chassis) 3.0L i

Interchange Part Numbers:

BMW 13721730449, BMW 13721730946, BMC FB174/01, MANN C33121, MAHLE LX500

The Performance Promise

Buy with confidence. This filter is engineered to meet or exceed OEM filtration standards while providing the increased breathability your BMW straight-six deserves. Backed by real automotive experts and fast shipping.