Description
The 666501034342 is the UPC code for the Air Source 1612 A/C expansion valve 1 2. This valve is used in air conditioning systems for heavy-duty trucks and equipment 1. It features a stud mount and a 2-ton rating
Air Source 1612 is a heavy-duty block-type A/C expansion valve used in truck and industrial HVAC systems.
Key Specifications
Type: Block-style expansion valve with two service ports
Cooling Capacity: Rated for approximately 2 tons
Refrigerant Compatibility: R12 and R134a
Mounting: Stud-mount design with M10‑1.25 & M12‑1.5 thread specs
Port Connections:
Hose inlet/outlet: #6 / #10 (3/8″ × 5/8″)
Evaporator inlet/outlet: #8 / #8 (5/8″ × 5/8″) [finditparts.com]
O-ring Sizes:
O‑Ring #1: 0011/0015
O‑Ring #2: 0013/0013
Applications & Compatibility
This valve is frequently used in Navistar truck HVAC systems, including International series:
5000, 9000, 5500i, 5600i, 5900i, 9100i, 9200i, 9900i, 9900ix
OEM Reference Numbers:
Navistar: 1669955C1 / C2, 1699955C2, 2501794C91 / C92
Alliance: 308281
CoolStar: 520‑1230
Kysor: 1813007, 404335, 404341
Truck Air: 12‑0804A
Volvo: 3949398
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