The O-Ring Assortment for High Lifter contains complete sets of o-rings for both the 4.5:1 and 9:1 models. The Assortment fixes many external leaks in the High Lifter. But it's not a rebuild kit. For a rebuild kit you need pistons. This kit contains:

• 10-1313 Pilot O-Ring, qty 3 (included only for completeness, never replace these unless you have the special tool)
• 10-1331 End Cap O-Ring, qty 2
• 10-1327 Spool Valve O-Ring, for less than 45 psi inlet pressure, qty 6
• 10-1332 Spool Valve O-Ring, for greater than 45 psi inlet pressure, qty 6
• 10-1337 Button O-Ring, qty 2
• 10-1345 Check Valve O-Ring, qty 4
• 10-1347 Comm Tube O-Ring, Black, before 2016, qty 4
• 10-1348 Comm Tube O-Ring, Orange, after 2016, qty 4
• 10-1353 Central Tube O-Ring, qty 2
• 10-1355 Head O-Ring, Black, before 2016, qty 2
• 10-1356 Head O-Ring, Orange, after 2016, qty 2
• 10-1369 Low Pressure Piston O-Ring 4.5:1, qty 2
• 10-1371 Low Pressure Piston O-Ring 9:1, qty 2, and End Washer O-Ring, Inner, both models, qty 2
• 10-1374 End Washer O-Ring, Outer, qty 2
• 10-1380 Screen Washer for Inlet Fitting, qty 1
• 10-1550 Silicone Grease Minitube, qty 1