I grabbed a kickdown relay from the junkyard off a 1988 300TE M103 exactly the same as my car...

...I got home and the kickdown relay part # is different. Why would that be? Would they be compatible?

The Jetronic brain part # (which I took too) was the same...so I assume it must be compatible?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k