Adding 4th pump to 3 pump doser SA 2.1

[james211]

I ordered a doser 2.1 and accidentally ordered the 3 pump version. I presume since they offer the pumps to sell on their website I can just purchase one and install it myself to give me the fourth pump. Is that correct?

 

[Jerel]

You'll need the following from the online store.

PL-1455
PL-1451