[Jmclendon]

Originally Posted by James

I am using the wix 51121 with no problem.
According to Wix web site http://www.wixfilters.com/Lookup/Par...px?Part=171491 the wix 51123 gasket is too small.
And on the wix 51121 http://www.wixfilters.com/Lookup/Par...px?Part=170901 the gasket is the right size.

I made the mistake of not measuring. I simply went with the wix lookup results that were returned when I provided it with the relevant data (GMC 1500). The fact that the 51123 was listed on the known good parts list on Jolly's website gave me some comfort as well.
Having said that, I'm actually glad to hear it's too small. I was starting to worry that I was doing something really stupid.
I'm heartened by the fact that you're using a 51121, as I can actually get one of them after only waiting 24 hours. The 51123 took 3 weeks to arrive.
Seriously, Mad Max could never happen over here. There's not enough decent parts stores to raid. 1 week in and we'd all be walking.

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