The SPAL EF3509 16" Low-Profile Thermo Fan is specifically designed for high-performance automotive and road race applications where space behind the radiator core is heavily restricted. Individually triple-balanced for extended component longevity, this fan features a straight-blade layout optimized for rapid heat dissipation and heavy track duty. Its premium, low-profile shroud includes an integrated finger guard for safety.

Fitment Note: This unit is ideal for tight custom engine swaps (such as LS, RB, JZ, or V8 conversions) where radiator-to-engine clearance is minimal. Pair it with an optional 16" SPAL rubber mounting gasket (EF3552) for maximum shroud sealing efficiency.

Technical Specifications:

• SPAL Model Number: VA18-AP51/C-41A
• US Part Number: 30101516
• Voltage: 12V DC
• Flow Type: Puller (Suction / Mounts behind radiator)
• Blade Diameter: 16 Inch (381mm)
• Blade Style: High-Velocity Straight Blade
• Airflow Capacity: 1600 CFM (2720 m³/h)
• Current Draw: 11.0 Amps
• Profile Depth: 63mm Ultra Low-Profile
• Motor Protection Rating: IP68 Sealed Water & Dust-Proof

Physical Dimensions:

• A (Overall Diameter): 400mm (15.75")
• B (Height): 414mm (16.3")
• C (Center Width): 207mm (8.15")
• D (Mounting Hole Grid): 358mm (14.09")
• E (Thickness/Depth): 63mm (2.48")