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The Trane SHE3978 is a sheave made for mechanical systems. This component acts as a grooved wheel that works with belts or ropes. It transmits rotational force and motion in compatible Trane equipment.
The SHE3978 is key for ensuring smooth operation in HVAC systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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