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Q1: What are the part numbers for this thermostat?
A1: 5256423 Und 4929642, these two numbers are interchangeable.
Q2: Which engines does it fit?
A2: Suitable for Cummins 5.9L, B5.9, B3.9, ISB, QSB diesel engines.
Q3: Is this original or aftermarket?
A3: We can supply genuine and high-quality aftermarket options for your choice.
Q4: Does it come with gasket?
A4: Normally thermostat only. Gasket is separate if required.
F5: What’s your MOQ?
A5: Small order acceptable, wholesale price for bulk quantity.
