The Red Dot 71R8507 Orifice Tube is a purple International/Navistar CCOT fixed orifice tube designed for cycling clutch air conditioning systems. It precisely meters refrigerant into the evaporator to maintain proper cooling performance and compressor protection.
This model features a .075 in. orifice size, making it a higher-flow option commonly used in International/Navistar applications. The purple color allows quick visual identification during service.
Always confirm OE number and orifice size before installation.
Product Specifications
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Part Type: Fixed Orifice Tube
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System Type: CCOT (Cycling Clutch Orifice Tube)
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Color: Purple
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Red Dot Part No.: 71R8507
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Factory No.: RD-5-10757-0P
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Length: 3.55″
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Outside Diameter: .429″
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Orifice Size: .075″
OEM References (Partial List)
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International/Navistar: 3548044-C1
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International/Navistar: 2513533-C1
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OE Reference: BOA80-305-00-949
Cross References
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Texas Truck A/C: 450-7007, 450-7007A
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AirSource / MEI: 1662
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Alliance: ABP N83 308077, ABP N83 308311
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Bergstrom: 540364
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CoolStar / MEI: 530-1055
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Everco HD: 932203
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Four Seasons: 38641
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Kysor: 1813008
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Omega: 31-50008
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Primatech: PTAC1662
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Santech: MT0091
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Truck Air / MEI: 12-0805, 12-0805A
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TruckAC+: T4926
Interchange Numbers
1662, 1813008, 2153533C1, 232-8578,
2513533C1, 31-50008, 3548044C1, 38641,
4379-RD5107570P, 450-7007, 530-1055,
71R8507, ABP N83 308077, ABP N83 308311,
BOA80-305-00-949, EC10800, EV03055,
RDHRD5107570P, RDT71R8507
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