The Holden 253-308 EWP Block Adaptor is designed in conjunction with an EWP® Electric Water Pump Combo Kits to replace your existing belt-driven mechanical water pump on the 253, 304, 308 & 355 GM Holden engine.

*Note: For the heater return hose, you will need our Heater Return Adaptor, Part Number 8380. Place this unit before the EWP as per the demonstration video.

Some older vehicles may have a heater pipe with two hose connectors, one for the sender the other for the return. In these instances, you will need 2 x Heater Return Adaptprs (Part No. 8380). Place one Adaptor before the EWP, this will be your heater return, place the second Adaptor unit after the EWP, this will be for your heater sender hose.

Part number: 8600