Coolant Temperature Sender 100-3055 for CAT 5110B 5230B Excavator 938F 994D Loader – Engine Temp Probe

OE Number: 100-3055Compatibility: CAT 5110B, 5230B Excavators; 938F, 994D LoadersEngines: C27, C32, 3516B Industrial DieselType: NTC Thermistor Temperature SenderResistance Range: Matches OEM curve (~100Ω at 100°C to ~1,000Ω at 20°C)Thread Size: 1/8" NPTElectrical Connector: Single-terminal spadeOperating Temperature: -40°C to +150°CBody Material: Brass with high-temp epoxy seal

• Aftermarket coolant temperature sender (OE 100-3055) for Caterpillar 5110B and 5230B mining excavators, 938F and 994D large wheel loaders — accurately monitors engine jacket water temperature in C27, C32, and 3516B industrial engines for reliable analog gauge display in heavy-duty mining and earthmoving operations.
• This is a passive NTC thermistor sender, not a digital sensor or electronic switch. It provides a resistance-based signal that precisely matches the OEM calibration curve — enabling accurate dashboard readings without ECU communication, emission system involvement, or automatic control functions.
• Heavy-duty brass body with 1/8" NPT thread and sealed terminal resists extreme heat, vibration, and coolant exposure in harsh open-pit mining, quarrying, and bulk material handling environments across North America.
• Direct OEM-fit replacement with identical electrical characteristics and mounting profile. Install in minutes using standard hand tools — no wiring modifications or recalibration required.
• ⚠️ For off-road Caterpillar mining and construction equipment only. Not approved for on-highway vehicles, agricultural tractors, marine propulsion systems, irrigation pumps, pesticide sprayers, or refrigeration units.