Bosch WR78X - Spark Plugs Super 4 - Set of 4 : Amazon.co.uk: Automotive
Bosch 504 WR 78 X Super 4 Spark Plug, 4 Piece 21 Hex 14x1.25mm Thread 19mm Long | eBay
Bosch Super 4 Spark Plug for Proton Saga Iswara Wira1.3 (WR78X) - 4pcs/SET - Proton Perodua Parts | Online store for Proton and Perodua car spare parts