PRW 44-45 PQ Series Electric Racing Water Pump - Manual

PRW Industries, Inc.
1722 Illinois Avenue
Perris, California 92571
Tele: (951) 436-7900
Tech: (888) 377-9779
Electric Water pump
Installation instructions
Parts List
Item Quantity
Electric Water Pump, Universal Housing and Motor 1 each
5/16” Socket Head Bolts & AN Washers 8 each
Water Pump Housing to Elbow Rubber “O” Rings 2 each
Water Pump Elbow to Block Gaskets 2 each
¾” NPT Plug and 3” Long Inlet Fitting (Loosely Installed in Housing) 1 each
Low-Voltage Pigtail Connector 1 each
2 ml Bullet Tube Aluminum Anti-seize 1 each
Water Pump Housing Cover Plate, Housing Gasket, and 5/16” Hex Socket
Fasteners (Ford models only) As Detailed Below
Before you begin, read these instructions carefully first: You will need proper tools and supplies, including
a strap wrench to tighten the inlet fitting, Teflon tape to seal the Inlet Fitting, silicone or gasket sealant, a set of
3/8” drive Allen head socket wrenches, a torque wrench, and a fusible link or inline fuse holder (15-20 Amp)
available at a local auto parts or electronics store.
Plan the installation carefully, since OEM accessories (power steering pump, alternator, etc.) may need to be
relocated to ensure clearance between belts, hoses, etc. Also, the original bypass and/or heater hoses to the
water pump are not used, and should be blocked-off or appropriately rerouted. The accessory drive belt no
longer turns the water pump, so a shorter drive belt must be used to bypass the original water pump pulley. On
serpentine belt drive systems the tension/idler pulley may need to be re-located.
Step 1 – Removing the Old Water Pump
Make certain the engine is cool enough to complete the work. Take extra precautions when working with electrical
components. Disconnect or otherwise disable the battery. Drain the coolant and remove your existing water pump.
Clean old gasket material from the engine block thoroughly.
Use a high quality gasket sealer and the supplied
hardware and gaskets to prevent leaks.
Step 2 – Mounting the Water Pump
This Electric Water Pump was designed to fit in the stock location on the engine. Check and clean the new
parts of any debris that may prevent the gaskets from sealing. If not already assembled, install the “O” rings on
the water pump elbows, use the anti-seize provided to coat the fastener threads and hand tighten. You may wish
to use white grease or a thing film of silicone sealant between the elbows and the pump housing as well.
Then, apply sealant to the water pump side of the gasket. Tack the gaskets to the back of each side of your new water
pump, aligning the gaskets to the bolt holes. Apply sealant to the engine block and bolt the water pump into place. Run
each of the four bolts up to a snug fit; then tighten the water pump housing and elbow fasteners to 15 ft/lbs. before
tightening the engine block fasteners to a recommended 25 ft/lbs.