09-15-2009, 04:48 AM
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Yenko Contributing Member
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Join Date: Jan 2001
Location: Illinois
Posts: 20,911
Thanks: 70
Thanked 3,521 Times in 1,426 Posts
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Re: Original A212CW air cleaner setup
Those were mostly aimed at GMC industrial vehicles.
I think the X stood for off road use to them.
https://www.yenko.net/ubbthreads/showflat...true#Post380536
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