MEZIERE WP319 User manual

WP319 Centrifugal 12V pump
GM LSx Bolt on series High Flow Pump
In The Box:
1 Electric Pump WP319
2 Water pump gaskets (factory style)
1 Wiring harness w/ 20 amp fuse
2 Heaterhosettings
2 6MM x 20 SSSHCS
1 Wire clip (very important for Corvette)
2 Contingency decals
The inlet tting will be modied and
re-used from your original pump.
Meziere Enterprises 220 S. Hale Ave. Escondido, CA 92029 760-746-3273
Mounting:
The Meziere water pump seals to the block using the two GM gaskets supplied. Bolt pump in place using the 6 OEM bolts.
Run all six bolts up snug before tightening to 22 Ft.-Lbs. Care should be taken to not trap the air conditioning wiring
harness behind the pump. The new 180 degree thermostat is pre-installed at our factory. Should you want to remove the
thermostat,removethetopradiatorhoseandun-screwtheoutlettting.Thethermostatwillfallout,pleasere-lubricatethe
“o”ringpriortore-installingtheoutlettting.Installthebelttensioner.Beforeyouinstalltheinlet(lowerhose)youmust
remove (remove or cut out) the old, OEM thermostat from the inlet housing. Using channel lock pliers; push down and turn
toremovetheoldthermostat.Usingthesupplied6MMbolts,installthewaterinlet.Installtheheaterhosettingssupplied
with the pump. Make sure to line up the proper sizes. A small amount of lubricant should be applied to the O-rings. Install
theupperradiatorhose.Ifthecarisnotequippedwithapowersteeringcooleripthehosetogainextraclearanceinfront
of the idler pulley. Cars with power steering coolers: Extra care must be taken to make sure the upper hose is held away
from the idler pulley. Install the throttle body carefully checking to make sure the throttle linkage clears the top of
the pump body.Someyear2000andupmodelsmayrequireminormodicationtothebottomofthelinkage.Alightle
can perform this in minutes. Once you have checked your throttle by hand, install the cable linkage(s). Install the upper
radiator support and the air box. Reinstall the serpentine belt.
Remember to check the upper radiator hose and throttle body linkage before starting the car. Engine Damage
could occur if the placement of these parts is not correct. Use the tie wraps to hold the hose away from the idler
pulley if necessary. Check to make sure the throttle blades open and close freely and completely.
To Do the Job You Will Need:
• Basic hand tools
• Tie wraps
• Scraper or wire brush
• Band clamp removal tool
• Brake cleaner
• Electrical wiring kit (crimps and terminals)
• Light oil lubricant for o-rings
• Fineleforpossiblelinkagemodication
Removing the stock pump:
Drain the coolant. Remove the air box and upper radiator support. Remove the upper radiator hoses and heater hoses.
Remove the throttle body. Remove the serpentine belt, and the belt tensioner. Remove the thermostat inlet. Remove the
six pump to block bolts. Clean all mating surfaces.

California Proposition 65 Warning
WARNING: This product contains chemicals known to the State of California
to cause cancer and birth defects or other reproductive harm.
WARNING:Motorvehiclescontainfuel,oilsanduids,batteryposts,terminals
and related accessories which contain lead and lead compounds and other chem-
icals known to the State of California to cause cancer, birth defects and other
reproductive harm. These chemicals are found in vehicles, vehicle parts and
accessories, both new and as replacements. When being serviced, these vehicles
generateusedoil,wasteuids,grease,fumesandparticulates,allknowntothe
State of California to cause cancer, birth defects, and reproductive harm.
For background on the new Proposition 65 warnings, see:
https://www.p65warnings.ca.gov/new-proposition-65-warnings
Proposition 65 and its regulations are posted at:
https://oehha.ca.gov/proposition-65/law/proposition-65-law-and-regulations
To give Meziere notice of an alleged violation of California Health and Safety
Code Section 25249.5 or 25249.6, you must send notice to:
[email protected]
California Proposition 65 Warning: Please see below for Prop 65 information.
Startup / Running:
Fillthecoolingsystem.Replacellcapandturnonpump.Removellcapandtopo󰀨coolantlevel.Rechecklevelafter
one heat cycle. DO NOT RUN PUMP DRY for more than a few seconds.
Beauty Tip:
Yourpumpcomestoyoupolishedandwaxed.Occasionalwaxingwillallowdirtordebristobewipedrighto󰀨thepump
ando󰀨ersomeprotectionfromUVlight(theanodizedcoloronyourpumpcanfadefromprolongedexposuretosunlight).
Wiring the Pump:
Use the fused harness supplied with the pump.
The BLUE wire should be connected to a 12 volt positive (+) switched source.
The BLACK wire should be connected to ground.
Supply and ground wires should be 14 gauge minimum. All switches should be rated at 20 amps or better.
WARNING: Not using a protection circuit (fused circuit) will void your warranty.
Additional LS wiring Info:
The black wire should be routed to ground. The blue wire should be routed to an ignition hot source. On many GM ve-
hicles these can be found on the left inner fender well . Use of a relay (Meziere # WIK346) is recommended. These parts
can be purchased through Meziere or many other part outlets. Keep the wires away from the pulley.