The 71R4050 control knob is designed to improve operator feel while allowing quick, precise adjustments on mobile HVAC control panels. Built for 1/4-inch shaft applications, this knob uses a set-screw retention design to hold securely in place under vibration.
It features a flush-mount profile with a 45° offset, making it well suited for tight dash and panel installations. In addition, this control knob is commonly used on Red Dot R-290 and R-295 control setups, making it a reliable replacement option for heavy-duty HVAC applications.
Use the specifications and interchange numbers below to confirm compatibility before ordering.
Product Specifications
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Part Type: Control Knob
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Red Dot Part No.: 71R4050
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Red Dot Factory Part No.: RD-4181-0P
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Mount Style: Flush mount
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Shaft Fitment: 1/4″ shaft
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Retention Method: Set screw
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Offset: 45°
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Overall Diameter: 1.25″
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Overall Height: 0.85″
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Shaft Recess Depth: 3/4″
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Fits Applications: Red Dot R-290, R-295
Cross Reference Numbers
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Texas Truck AC: 850-7301
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AirSource (MEI): 1272
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Alliance: ABP N83 316035
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Bergstrom: 526312, 573260
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Climatech: FD1035
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TRP / Climatech: FD10350
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CoolStar (MEI): 765-1048
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Euclid Industries: E-807987
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Kysor: 2575004
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Kysor (Old): 380041
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NDNS: ABPN83316035
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Primatech: PTAC1272
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Truck Air (MEI): 18-2660
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TruckAC+: T2837
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TTA/C: 44896
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Western Star: 60306-5002
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Red Dot (Aftermarket): 71R4050
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Red Dot (Factory): RD-4181-0
Interchange Numbers
1272, 1696480, 18-2660, 232-8443, 2575004, 2575006, 380041, 380061, 4379-RD41810, 4379-RD41810P, 60306-5002, 71R4050, 765-1048, 850-7301, ABP N83 316016, ABP N83 316035, E-807987, FD10350, FD10700, LOU3048, RDHRD41810P, RDT71R4050, VE2058, VJ8323-1
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