Down
Normally spring down.
Spring down.
The spring goes into the engine.
spring down
The spring side of any thermostat always goes towards the engine.
Spring towards engine.Spring towards engine.
The side of the thermostat that has a spring showing faces into the engine.
Normally the spring goes towards the engine.
The spring goes down.
Spring into the engine.
The side with the spring faces into the engine.
The spring goes into the block.