FAQ
Q: Which engines are compatible with this preheat relay?
A: It is designed for Isuzu 4HK1 and 6HK1 diesel engines.
Q: What part numbers does this relay replace?
A: It replaces part numbers 8-98005631-1 and 4681233.
Q: Is this product a sensor or a relay?
A: It is an engine preheat relay used to control the glow plug electrical circuit.
Q: What happens when the preheat relay fails?
A: The engine may become difficult to start in cold conditions, and the glow plug system may stop operating correctly.
Q: Is this product new or used?
A: It is a new aftermarket replacement preheat relay.
Q: How should compatibility be confirmed?
A: Confirm the part number, engine model, connector arrangement, and product appearance before ordering.
Q: Do you support wholesale orders?
A: Yes. YNF Machinery supplies engine electrical parts for distributors, repair companies, and equipment dealers.
