A-Premium Radiator Cooling Fan Blade for BMW Inline-6 — 16.54" 11-Blade Steel-Plastic

High-strength A-Premium radiator cooling fan blade engineered to replace worn OEM units on a wide range of BMW inline-six models, featuring 11 blades, steel-plastic construction, and a 16.54-inch diameter for reliable airflow and long service life.

This replacement cooling fan blade is built to restore proper engine bay airflow and maintain safe operating temperatures on compatible BMW vehicles. It’s a purpose-made assembly that matches factory mounting geometry and blade count, so you get predictable performance and straightforward fitment without modifying your vehicle. The component combines a steel hub with reinforced plastic blades to balance strength, weight, and vibration resistance.

Which BMW models will this fan blade fit?

This A-Premium fan blade fits many BMW models that use inline-six engines across E36, E39, E46, E53, E32 and related platforms. Fitment covers 2.5L, 2.8L and 3.0L engines from the early 1990s through the mid-2000s; always confirm by selecting your Year/Make/Model or matching part reference numbers before ordering.

• Common E46 fits: 323i/323ci/323is, 325Ci/325i/325xi, 328i/328ci, 330i/330ci/330xi
• E36 and E39 entries: 325i/325is, 328i/328is, 525i, 528i, 530i
• Other fits: M3 E36, X5 E53, Z3 E36, 735i/E32 variants
• Reference numbers: 621-584, 621584, 11521712058, 11806009738

How is this fan blade constructed and why does that matter?

The blade uses a steel center and reinforced plastic blades to strike a balance between rigidity and weight savings. That combination reduces the risk of bending or cracking under heat and vibration while keeping inertia low for smoother engine response and less load on the motor or clutch assembly.

• 11 aerodynamic blades for consistent airflow distribution
• Steel hub for secure mounting and torsional strength
• Durable plastic blades resistant to heat and impact
• 16.54" diameter to match OEM airflow specifications

Is installation straightforward and what should I check before fitting?

Installation is typically direct—replace the old fan blade using the factory mounting points. Before you begin, verify fitment by checking your vehicle details and the listed reference numbers; inspect the fan clutch, shroud clearances, and mounting hardware to avoid interference and ensure safe rotation.

• Confirm Year/Make/Model or part reference numbers first
• Inspect and replace worn clutch or hardware if necessary
• Ensure shroud clearance and secure torque on hub bolts
• Balance-check recommended after installation for vibration-free operation

What performance and warranty protections are included?

This fan blade is designed to deliver dependable cooling performance comparable to OEM units when fitted correctly. A-Premium supports the product with a one-year unlimited-mileage guarantee, giving added assurance against manufacturing defects or premature failures under normal use.

• OEM-style blade count and diameter for expected airflow
• Materials chosen for long-term durability in engine heat
• One-year unlimited-mileage warranty from A-Premium
• Sold as direct-replacement component for compatible BMW models

Who this is for: This fan blade is aimed at BMW owners, DIY mechanics, and independent shops servicing E36/E39/E46 and related platforms with inline-six engines who need a reliable, cost-effective replacement. It’s suitable for those who want a factory-like fit and performance without buying a complete assembly, provided they confirm compatibility with their vehicle year and engine code.