Installation Manual: Whipple SC 21_F150_R5
Last Updated: June 12
th
, 2021
Page 11 of 39
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22.
Disconnect the driver side heater tube quick connect fitting by squeezing and lifting away. Remove the heater tube
overflow hose using a pinch clamp tool. Using an 8mm socket on the 1 factory bolt, remove the heater tube. Install
the supplied oring to the shorter heater tube and install to factory location, secure with stock bolt, torque to 89 lbs-
in. Reconnect both factory hoses, secure lower hose with stock clamp.
23.
Remove stock water neck to coolant reservoir vent line from water neck. Remove stock pinch clamp and water neck
hose from stock water neck. Using a 10mm socket, remove the (2) bolts securing stock water neck. Transfer stock
oring from stock water neck to new water neck. Apply pipe sealant to threads of 1/8” NPT to 5/16” 45 Deg fitting.
Install fitting to water neck, rotate so it ends facing directly towards driver side. Install water neck to motor using
stock fasteners (10mm socket), torque to 89 lbs-in.
