Yep, look like all the money is in getting to the solenoid, particularly on the passenger side. Is this a common maintenance item?

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'03 4.4 M62
Original Owner 107k on the clock
Alpine White/Beige Leather

Others:
2013 M-B E350 S4 Touring
2016 M-B E350 S4 Touring
2004 Porsche 911 C4S Track Duty