The Red Dot 71R4040 control knob is designed to provide secure, reliable control while maintaining a clean, professional panel appearance. Built for 1/4-inch shaft applications, this knob uses a set-screw retention design to ensure a firm hold, even in high-vibration mobile HVAC environments.
Because it installs easily and locks in place, the 71R4040 is a practical replacement option for a wide range of heavy-duty HVAC control panels. Its simple, durable design makes it well-suited for trucks, off-highway equipment, and other mobile HVAC systems.
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.: 71R4040
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Red Dot Factory Part No.: RD-5-5928-0P
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Shaft Fitment: 1/4″ shaft
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Retention Method: Set screw
Cross Reference Numbers
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Texas Truck AC: 850-7300
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AirSource (MEI): 1271
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Alliance: ABP N83 316050
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Climatech: FD1075
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CoolStar (MEI): 765-1050
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Euclid Industries: E-807988
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Kysor: 2575008
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Kysor (Old): 380076
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NDNS: ABPN83316050
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Omega: 28-R4040
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Primatech: PTAC1271
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RoadForce: RF196B380995
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TRP / Climatech: FD10750
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Truck Air (MEI): 18-2662
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TruckAC+: T2836
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TTA/C: 36861
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Red Dot (Aftermarket): 71R4040
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Red Dot (Factory): RD-5-5928-0
Interchange Numbers
1271, 1311206, 18-2662, 232-8442, 2575008, 279-2088, 380076, 4379-RD559280, 4379-RD559280P, 71R4040, 765-1050, 850-7300, 90031675, ABP N83 316050, E-807984, E-807988, FD10750, LOU3050, RDH RD5 5928 0, RDHRD559280P, RDT71R4040, VJ8323, VJ8323-2
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