Oil pressure switch 1/8 NPT: compatible with Allis Chalmers 7030 7040 7045 7050 tractors, fits engines with a 1/8 NPT port, restores dash warning lamp or gauge signal on the listed series. Engine oil pressure sensor replacement: matches OEM 74020666 and 74021445, made to the same form for straightforward install, threads into a 1/8 NPT port, ensures the correct signal to the dash indicator. Oil pressure sender switch: converts engine oil pressure to an on off electrical signal for a lamp or gauge, assists early detection of low pressure events to protect components and schedule service. Tractor maintenance parts: replace a leaking or failed pressure switch to solve flickering lamp, unstable gauge readings, or intermittent alarms, suitable for routine service intervals and workshop repairs. Agriculture and field use: suited for farm tractors, heavy equipment, and diagnostics, for home acreage machines, outdoor work, and fleet upkeep where quick engine status checks are needed.
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