The Texas Speed -20AN LS Water Pump Adapter Kit converts the factory push-on radiator hose connections on a GM LS water pump to -20AN fittings so AN hose and hose ends can be run to the radiator. It is intended for LS engines that have been upgraded past the point where the stock push-on hoses are a good fit for the cooling system plumbing.
The kit supplies a -20AN water outlet and a weld-on inlet adapter, which convert both the upper and lower hose connections to -20AN. An adapter plate with a rubber o-ring is also included so the kit can be used with older LS water pumps. Texas Speed part number 25-8939 (HC8939).
Specifications
- Application: GM LS engine water pumps
- Fitting size: -20AN on both the outlet and the inlet
- Outlet: -20AN water outlet included
- Inlet: Weld-on -20AN inlet adapter included
- Adapter plate: Included, with rubber o-ring, for use with older LS water pumps
- Part number: TSP-8939 (Texas Speed HC8939)
FAQ
What does the Texas Speed -20AN LS Water Pump Adapter Kit do?
It converts the push-on upper and lower radiator hose connections on a GM LS water pump to -20AN so AN hose ends and braided or hard line can be used for the cooling system.
What is included in the -20AN LS water pump adapter kit?
The kit includes a -20AN water outlet, a weld-on -20AN inlet adapter and an adapter plate with a rubber o-ring for mounting the kit to older LS water pumps.
Does this kit work on older LS water pumps?
Yes. Texas Speed includes an adapter plate with a rubber o-ring specifically so the kit can be installed on earlier LS water pumps as well as later ones.
Is the inlet adapter a bolt-on or weld-on part?
The inlet adapter is a weld-on piece. It is welded to the water pump inlet to convert it to -20AN, while the outlet is a separate -20AN water outlet.
Is this a vehicle-specific part?
No. The Texas Speed -20AN LS Water Pump Adapter Kit fits GM LS water pumps rather than a specific vehicle, so it is listed as a universal LS cooling part.
