Part # 5112-35
Manufacturer Code SPX4000Z1
Dimensions 2.75" L x 2.75" W x 0.2" D
Alternate Part #'s SPX4000Z1
Union/Diffuser O-ring - SPX4000Z1
My Hayward Northstar pump is getting air in it. Could replacing this o-ring spx4000z1 solve the issue?
Yes replacing this o-ring could solve the air suction issue. When this o-ring gets dry rotted or breaks then the pump very well may pull air into it.