Bosch plug wires are junk. I put a set on my Toyota a year ago and they are starting to fall apart. The plug ends don't want to come off the plugs and I think there starting to come apart. I hope I don't have to change these glow plugs out again soon. They are a PITA to get to on the 603.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200