Water Temp Sending Unit Adapter for Mercedes V8 Swap

Why You Might Need One. Using the Mercedes water temperature sending unit in the Chevrolet engine will make the Mercedes water temperature gauge read accurately.

The Mercedes water temperature sending unit has a 14mm x 1.5 thread. Stealth Conversions has a brass adapter (shown above) that accepts the Mercedes water temperature sending unit, and has a 3/8 pipe thread (NPT) that screws into the Chevrolet heads or intake manifold. If you have an older engine that has 1/2 pipe fittings, a 1/2 to 3/8 brass bushing can be obtained at most plumbing or automotive stores.