When you're shopping for thermostats, HVAC controls, and sensors, the first decision is usually whether you're fixing a vehicle or a furnace. The products here cover both: three engine coolant temperature sensors and one Rheem furnace control board. They also range widely in listed price, so the right pick isn't just about the lowest number - it's about matching the part to your car, truck, or central furnace.
Quick take
If you need a replacement for a GM vehicle, you have two sensor options: a GM OEM sensor and a Luft Meister direct-fit sensor. If you're working on a Dodge, Ram, Dakota, Chrysler, or Jeep TJ with a 4L engine, the C-HORSE TX81 is the targeted choice. For furnace repairs, the Rheem control board is the only part here that addresses a central furnace. The listed prices range from an affordable sensor to a full furnace control board, so the right choice depends entirely on what you're fixing.
Listed price comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| Luft Meister ECT Sensor | $5.99 | |
| C-HORSE TX81 ECT Sensor | $9.75 | |
| GM OEM ECT Sensor | $10.35 | |
| Rheem Furnace Control Board | $199.99 |
Decision matrix
| Product | Best For | Consider If |
|---|---|---|
| New GM OEM ECT Sensor | GM, Chevy, Pontiac, Buick, Cadillac, GMC vehicles | You want a GM-branded sensor with a long list of interchange numbers |
| Luft Meister ECT Sensor | GM vehicles | You want the least expensive listed sensor and are okay with a direct-fit aftermarket part |
| C-HORSE TX81 ECT Sensor | Dodge, Ram, Dakota, Chrysler, Jeep TJ 4L | You prefer a US-origin sensor with a specific engine match |
| Rheem Furnace Control Board | Rheem R802VA central furnaces | You need a genuine OEM furnace control board |
Product notes
New GM OEM Coolant Temperature Sensor 15326386
This sensor is listed as a new, direct-replacement part with a genuine GM OEM designation. At $10.35, it sits between the two other engine sensors in this roundup. The listing includes multiple interchange part numbers, including 15326386, 25036708, and 5744030, which is helpful when you need to match your existing part. One thing to keep in mind: the description says it comes from a GM OEM bulk box and is sealed in a bag, with 'Delphi' printed on the plastic connector. That packaging detail may matter if you expect a retail-style box. For a GM vehicle and original-equipment branding, this is a direct replacement to consider.
For GMC Chevrolet Pontiac Cadillac Coolant Temperature Sensor (Luft Meister)
The Luft Meister sensor is the least expensive item in this group, listed at $5.99. It's described as new and direct-fit, and it includes one engine coolant temperature sensor. The manufacturer part number references GM numbers like 12146312, and the listing includes a 1-year manufacturer warranty. The fitment is stated broadly for GMC, Chevrolet, Pontiac, and Cadillac models, so the part numbers are what you'll need to compare. The included items list only the sensor itself. If the lowest listed price is your priority and you're comfortable with an aftermarket part, this is a reasonable pick.
TX81 Engine Coolant Temperature Sensor (C-HORSE)
The C-HORSE TX81 sensor is listed at $9.75 and marked as new, with a country of origin of the United States. The title specifically fits Dodge, Ram, Dakota, Chrysler, and Jeep TJ with a 4L engine, and the interchange numbers include TX81, SU3035, and 56027873. That targeted fit makes it easy to see if this is the right sensor for your vehicle. The main limitation is that mounting hardware is not included, so you'll be reusing your existing setup. There's also a California Prop 65 warning in the listing, which is worth knowing about before you buy. For a US-origin sensor with a specific engine fit, this is the option to consider.
Rheem OEM Furnace HVAC Integrated Control Board, 62-104061-05
The Rheem control board is the only furnace part in this roundup and the most expensive item, with a listed price of $199.99. It's described as a genuine OEM replacement, in new condition with open-box packaging, and it fits a long list of Rheem R802VA furnace models. The listing also notes 1-phase operation and a 2024 manufacturing year. If you have one of those Rheem furnaces, this board is designed as a direct replacement. The open-box condition means it ships without original factory packaging, which is a trade-off to consider. It also costs substantially more than the sensors, but that's expected for a complete control board.
Final recommendation by use case
For a GM vehicle with a coolant temperature sensor failure, the New GM OEM Coolant Temperature Sensor 15326386 offers original-equipment branding and a broad set of interchange numbers. If you want the lowest listed price, the Luft Meister sensor for GMC/Chevy/Pontiac/Cadillac is the direct-fit pick. For Dodge, Ram, Dakota, Chrysler, or Jeep TJ 4L owners, the C-HORSE TX81 is the targeted option. And for a Rheem central furnace, the Rheem OEM Integrated Control Board 62-104061-05 is the one to buy. Match the part to your engine or furnace model, then use the listed price as a final gauge.
