Description
Features:
OEM Part: PW820258
Function: Stores and recovers expanding engine coolant
Material: Durable heat-resistant plastic
Type: Coolant overflow / expansion reservoir
System role: Maintains cooling system pressure and prevents coolant loss
Location: Engine bay, connected to radiator overflow hose
Application:
Proton Waja / Gen2 / Persona (BLM, FL, FLX) / Exora
Package Includes:
1 × Coolant Reservoir Overflow Bottle
| Model | Make | Model | Chassis Code | Engine Code | Engine Size |
| 2009 – Present | Proton | Exora | FZ6Y | S4PH | 1.6L |
| 2004 – 2008 | Proton | GEN-2 | CM3L | S4PE | 1.3L |
| 2004 – 2012 | Proton | GEN-2 | CM6L | S4PH | 1.6L |
| 2007 – 2016 | Proton | Persona | CM6S | S4PH | 1.6L |
| 2012 – Present | Proton | Prevé | CR6S | S4PH | 1.6L |
| 2008 – 2010 | Proton | Saga BLM | BT3S | S4PE | 1.3L |
| 2008 – 2010 | Proton | Saga BLM | BT6S | S4PH | 1.6L |
| 2010 – 2011 | Proton | Saga FL | BT3S | S4PE | 1.3L |
| 2010 – 2011 | Proton | Saga FL | BT6S | S4PH | 1.6L |
| 2011 – 2016 | Proton | Saga FLX | BT3S | S4PE | 1.3L |
| 2011 – 2016 | Proton | Saga FLX | BT6S | S4PH | 1.6L |
| 2009 – 2012 | Proton | S16 | BT3S | S4PE | 1.3L |
| 2009 – 2012 | Proton | S16 | BT6S | S4PH | 1.6L |
| 2012 – 2016 | Proton | S16 FLX | BT6S | S4PH | 1.6L |
| 2006 – 2009 | Proton | Satria Neo | BS3M | S4PE | 1.3L |
| 2006 – 2015 | Proton | Satria Neo | BS6M | S4PH | 1.6L |
| 2013 – Present | Proton | Suprima S | CR6L | S4PH | 1.6L |
| 2000 – 2005 | Proton | Waja | CF1S | 4G18P | 1.6L |
| 2006 – 2008 | Proton | Waja | CF1S | S4PH | 1.6L |
| 2008 – 2011 | Proton | Waja CPS | CF1S | S4PH | 1.6L |















