Or obtain one from a similar model in the boneyards...

...and get yourself a spark plug holder puller tool...saves on breaking them, (which most will without proper de-installation)...and an ignition wire set isn't cheap!

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car