The SPAL EF3510 (VA18-AP51/C-41S) is a heavy-duty 16-inch low-profile performance electric fan engineered for front-mounted pusher (blower) configurations. Designed for large-core radiators where space between the engine block and the radiator shroud is completely non-existent, this compact yet massive 16" fan delivers high-volume primary or supplementary cooling without the bulky footprint.
 

Common Applications & What People Use It For

Thanks to its expansive 16-inch diameter and slimline depth, the EF3510 is a premium choice for full-sized automotive, commercial, and transport cooling builds:

• Primary Radiator Cooling: Often used as the main electric fan upgrade on large-core radiators in classic muscle cars, custom trucks, and 4x4s where mechanical fans have been deleted.
• Large A/C Condenser Boosters: Perfect for mounting to the front of large-scale air conditioning condensers to drastically reduce head pressures and improve cabin cooling during idling.
• Custom Front-Mount Heat Exchangers: Ideal for high-horsepower builds requiring maximum airflow forced through large front-mounted oil, transmission, or water-to-air intercooler setups.
   

Part Number Cross-Reference Matrix

If you're replacing an existing fan, look for these part numbers or designations on your unit:

• SPAL Part Number: 30101517
• SPAL Type: VA18-AP51/C-41S
   

Key Features & Benefits

• Genuine SPAL Quality: Fully engineered and manufactured in Italy to meet strict global motorsport and heavy-duty OEM specifications.
• Maximum Coverage, Minimum Depth: Features an expansive 16-inch diameter to cover massive surface areas while maintaining a slim total depth of just 52mm.
• IP68 Dust & Waterproof Motor: The fully sealed motor casing delivers flawless operation and exceptional durability against rain, road grime, mud, and dust.
• Precision Balanced Straight Blades: Engineered to move massive volumes of air efficiently, ensuring uniform cooling across dense radiator fins.
   

EF3510 16" SPAL Thermo Fan Specifications

• Voltage: 12 Volts
• Airflow Direction: Pusher (Blower / Mounts in front of radiator)
• Current Draw: 10.2 Amps (Nominal) / 11.2 Amps (Maximum continuous load under static pressure)
• Airflow Volume: 1171 CFM (Up to 1290 CFM max free air) / 1987 m³/h
• Blade Type: Straight Blade
• Motor Protection: IP68 Dust & Waterproof
   

EF3510 Fitting Dimensions

• A (Total Height): 414mm (16.30")
• B (Total Width): 400mm (15.75")
• C (Core Diameter): 385mm (15.16")
• D (Total Depth): 52mm (2.05")