This Homelite 43315 O-ring is an authentic New Old Stock pump seal used in several Homelite AP-series water pumps, including models AP520, AP2202, AP2201, AP5201, and AP3201.
These pumps rely on precisely sized OEM O-rings to maintain pressure, prevent cavitation, and keep the pump housing sealed under load.
After decades of service, original pump seals dry out or flatten, causing pressure loss and water leaks. Installing this factory-sized O-ring restores proper sealing and helps bring older Homelite pump systems back to working condition.
Specs & Highlights:
Genuine Homelite OEM part
Part Number: 43315
Fits AP520, AP2202, AP2201, AP5201, AP3201
NOS (unused factory stock)
Ensures proper seal in pump housing
Recommended for rebuilds, restorations, or routine service
Condition: New Old Stock (may show minor aging from storage)