1977–1987 GM Truck Dual 14-Inch SPAL Brushless Fan Shroud | Dewitts 32-3239019A
Build your GM truck's dual 14-inch SPAL brushless fan setup around a shroud designed for the Dewitts 3239019A radiator. The custom-contoured design overlaps the side tanks to accommodate the listed drop-in fans, while flap doors allow air to pass through at road speed.
Important clearance warning: This shroud may or may not fit with a stock steering box. Double-check clearance and shroud dimensions before ordering. Contact Monty with dimensional questions.
Vehicle & Radiator Fitment
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Vehicle: 1977–1987 GM Trucks.
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Radiator: Dewitts 32-3239019A (3239019A).
- Designed for the 14-inch SPAL brushless drop-in fans listed below only. Contact Monty about other fans.
Need fans too? Save around 5% on the entire kit. Shroud & Fan Kit Builder — Build your kit here.
Compatible SPAL Brushless Fans
Fans are sold separately.
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SPAL 30107102-PKG: 14-inch, 500W drop-in brushless fan, VA116-ABL505/105A. Buy here
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SPAL 30107103-PKG: 14-inch, 300W drop-in brushless fan, VA116-ABL324P/N-105A. Buy here
Compare real-world performance in Monty's independent fan CFM test results.
Construction & Finish Options
- Precision CNC-cut aircraft-grade aluminum, made in the USA.
- Available in raw bolted, raw welded, or welded and powder coated versions.
- Raw aluminum has witness marks that can be cleaned with Scotch Brite or a Magic Eraser.
- For powder coating, review the color options. We'll email after your order for your color preference.
Installation Hardware & Accessories
Fans and installation accessories are not included.
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Fan mounting hardware: eight M6x1 fasteners, 32mm long.
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Bolted version: eight additional M6x1 fasteners, 16mm long.
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Flap doors: nine SPAL 30130012 rubber flap doors. Buy here
- Brushless fan controller, optional but PWM control is highly recommended.
- Fan relay and wiring harness, if not already installed. Each relay should be rated for 30–50 amps depending on the fan selected. Follow the selected fan's wiring instructions.
PWM control options include SPAL temperature sensors SBL-TS165P, SBL-TS175P, and SBL-TS185P, Lingenfelter controllers, and compatible fuel-injection systems such as the Holley Sniper. These fans can alternatively be operated in an on/off configuration.
Relay and harness manufacturers include SPAL, Painless Performance, Derale, Ron Davis, and American Autowire. Monty's personal Painless Performance setup uses 195°F on and 185°F off.
See our Radiator Fan Shroud Installation Guide for step-by-step instructions.
Shipping & Lead Time
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Raw aluminum: approximately one week.
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Powder coated: approximately two weeks.
This is an aftermarket shroud designed for the Dewitts 3239019A radiator. It is not manufactured by Dewitts. Fans and installation accessories are sold separately.
Looking for a deal? Check Monty's Discounted Parts and Blems for working shrouds with minor cosmetic blemishes.
