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5. Here you can see the difference between the two pumps. First, the shape of the feed rotors on the newer pump, the cogs are rounder and the opening to the rotor is bigger for more oil (red arrow). Also, the flow port is bigger (yellow arrow) so more oil flows through. And with the new billet plate and improved design for a perfect fit you will notice there is no need for the inner O-ring, like on the old pump(blue arrow). View Related Article
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