4600 vs 4610 power steering pump

[sawtooth]

I need a new pump and my 4610 has always had faster and easier steering. Did they use the same pump for both or did they increase flow on the 4610s. Would like to use a better pump if possible. Thoughts?

Thanks

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[sawtooth]

It looks like the 4610 offers same pump as 4600 which is E6NN3K514DA.

Also maybe a upgrade to E6NN3K514BA

So question is could I use upgrade pump which offers 850psi vs 650psi?

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