The Red Dot 71R8503 Orifice Tube is a blue Ford CCOT-style fixed orifice tube designed for cycling clutch orifice tube (CCOT) air conditioning systems. This component meters refrigerant flow into the evaporator and plays a critical role in maintaining proper pressure balance and cooling efficiency.
Engineered for Ford CCOT applications, the 71R8503 features a .067 in. calibrated orifice and is color-coded blue to match Ford system specifications. It is commonly referenced under multiple Ford OE numbers including E0VY-19D990A and F3SY-19D990A, as well as heavy-duty cross references such as Mack and Volvo applications.
Use the specifications and interchange numbers below to confirm correct fitment before ordering.
Product Specifications
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Part Type: Fixed Orifice Tube
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System Type: Ford CCOT (Cycling Clutch Orifice Tube)
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Color: Blue
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Red Dot Part No.: 71R8503
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Red Dot Factory No.: RD-5-9807-0P
Dimensions
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Length: 3.46″
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Outside Diameter (O.D.): .425″
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Orifice Size: .067″
Application
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Ford CCOT Systems
OEM References (Partial List)
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Ford: E0VY-19D940A, E0VY-19D990A, EOV-19D990A
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Ford: F3SY-19D990A, F3XY-19D990A
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Ford: F5UZ-19D099AB, F5XZ-19D990AB
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Ford: XC4H-19D990A, XC4H-19D990AA
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Mack: 4379-RD598070
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Volvo: 3093574
Cross References
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Texas Truck A/C: 450-7001, 450-7001A
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AirSource / MEI: 1651
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Alliance: ABP N83 308037, ABP N83 308067
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Bergstrom: 540265
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Caterpillar: 232-8574
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CoolStar / MEI: 530-1020
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Delco: 15-5260, 15-5296
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DTAC: 04-15015
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Euclid: E-805049
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Fleetrite: ZGG11246, ZGG19315, ZGG19318
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Four Seasons: 38621
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Kysor: 1811001
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Motorcraft: YG-345
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Murray: 207315, 207316
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Omega: 31-50002
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Primatech: PTAC1651
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Road Choice: EV03020
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Santech: MT0092
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Truck Air / MEI: 12-0410
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TruckAC+: T4929
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Volvo: 3093574
Interchange Numbers
04-15015, 12-0410, 15-5753, 1651, 1811001, 207316,
232-8574, 3093574, 31-50002, 38621, 404154,
4379-RD598070P, 4379-RD598071P, 450-7001,
530-1020, 540265, 71R8503, 909601,
ABP N83 308067, E-805049, E0VY-19D990A,
EV03020, F3SY-19D990A, F3XY-19D990A,
F5UZ-19D099AB, F5XZ-19D990AB,
RDHRD598070P, RDT71R8503, YG-345,
ZGG11246, ZGG19315, ZGG19318
(Always verify system type, color code, and orifice size prior to installation.)

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