The 1-480703-2: It is the red colour variant, panel-mounted via snap-in retention, and uses a locking ramp for positive fastening.
No secondary lock or screw is needed; the ramp holds the pair mated through the temperature swings and mechanical shock typical of an engine bay or conveyor line. The snap-in panel mount simplifies chassis assembly: a rectangular cutout in the panel, push the housing in until the barbs click, and it's retained without hardware. For a 4-circuit power or signal harness, this keeps the BOM simple — housing, terminals, wire, no extra clips or brackets.
How It Sits Against the 5-Position White Sibling
The closest functional peer in the Universal MATE-N-LOK family is the 1379217-6 — a 5-position (3 + 2 power) receptacle housing in white, also with a locking ramp and female-socket contact type. The difference is the position count and the colour. The 1-480703-2 is a straight 4-position single-row housing; the 1379217-6 adds a mixed 3+2 layout for applications that need a separate power pair within the same connector shell. Both are panel-mount, both use the same locking ramp, and both accept crimp terminals.