Thermostat Upgrade – GM 2.8 V6 Turbo (A28NET / A28NER / A28NEL / B284)

For the GM 2.8 V6 Turbo engines such as A28NET, A28NER, A28NEL and B284, we offer modified thermostats with lower opening temperatures. This helps control engine temperatures better under higher load, tuning or performance applications.

Temperature options

• OEM thermostat: 85°C / 95°C
• Upgrade: 75°C / 85°C (-10°C)
• Race: 72°C / 78°C (-16°C)

Available options

1. Modify your own thermostat

You can send us your existing thermostat. It will be rebuilt and modified to operate at the selected lower temperature.

Please note: if you select this option, you must ship your old thermostat to us. The modification and rebuild will be carried out once we receive your unit.

• Modification cost: €121
• Full rebuild and internal modification
• Performs like new after rebuilding

2. Rebuilt thermostat (exchange basis)

We can supply a used thermostat which will be fully rebuilt and modified.

• Used thermostat: €60
• Modification: €121

3. New OEM thermostat

If preferred, we can supply a brand new OEM thermostat and modify it to the selected temperature.

• New OEM thermostat: €285
• OEM temperature: 85°C / 95°C

Lead time

Lead time approximately 2 weeks, depending on thermostat core availability and parts.

After rebuilding and modification, the thermostat performs like new. The internal modifications often improve the original design.