Highlifter Shop › Spool Valve Rebuild Kit Image 1 of 2 Image 2 of 2 Spool Valve Rebuild Kit $38.00 The Spool and six o-rings for use in the Valve Body of both The 4.5:1 and 9:1 Highlifter Pumps Quantity: Add To Cart Added! The Spool and six o-rings for use in the Valve Body of both The 4.5:1 and 9:1 Highlifter Pumps