NOS Original International Harvester / Stewart-Warner 2-1/16" Electric Water Temp Gauge (In Box)
Up for sale is a rare, original New Old Stock (NOS) International Harvester electric water temperature gauge, manufactured by Stewart-Warner (Part / Stamping Code 340RM6). Complete with its vintage factory International Harvester cardboard box, this gauge is an ideal piece for an authentic tractor restoration, Scout project, or IH heavy truck build.
The gauge features a classic 2-1/16" diameter housing with a bright chrome step bezel, clean black faceplate, crisp white lettering (C – NORMAL – H / TEMP), and a bold red indicator pointer. The back of the housing retains its original terminal mounting studs labeled I (Ignition), G (Ground), and A (Sender), along with the factory twist-in bulb socket terminal.
Product Specifications:
Brand: International Harvester (OEM manufactured by Stewart-Warner)
Housing Stamping: 340RM6 (Stewart-Warner Series 821881)
Gauge Type: 12V Electrical Engine Water Temperature
Diameter: Standard 2-1/16" (52mm) Panel Cutout
Bezel / Finish: Chrome Step Bezel over Black Dial Face
Includes: Gauge unit and original factory International Harvester box
Fitment & Compatibility:
International Harvester Tractors & Farm Equipment: Direct match for mid-century Farmall and IH tractors utilizing 12V electrical systems and SW instrumentation.
IH Scout & Trucks: Ideal replacement or accessory dash gauge for IH Scout 80/800, Pickup, Travelall, and heavy-duty trucks.
Universal Applications: Fits standard 2-1/16" gauge pods, under-dash panels, or custom hot rod/vintage farm builds.

