Parking Heater Products (PHP) PH23A – 2kW 12V. PH42A – 4kW 12V. Espar/Eberspacher. DKSI is your Canadian source for diesel-fired Bunk heaters, Engine heaters, and service parts. Based out of beautiful British ... I needed support for my boat heater just before a big fishing trip and DKSI was able to get me a new part within a couple of ...