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6 bolt oil pump housing vs 7 bolt oil pump housing

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brandonf90

Proven Member
100
4
Oct 11, 2012
davenport, Iowa
can anyone tell me the difference between 7 bolt and 6 both oil pump housings and show me a picture of the difference?? it would be much appreciated
 
Everything you could want to know about the 6 vs. 7 bolt:

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In short, aside from the housing shape difference, certain pumps have helical gears and others are straight cut. I've seen both flavors of gears irrespective of 6 vs. 7 bolt.
 
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