Skylark L4-138 2.3L DOHC VIN D MFI (1988)
Coolant Pump: Fundamentals and Basics
Recommended Parts
RECOMMENDED PARTS
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New water pump and O-rings.
Water Pump And Cover
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Gaskets:
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Water pump cover to block.
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Water pump body to water pump cover.
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Timing chain housing to water pump body.
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Exhaust manifold gasket and seal (exhaust manifold removal is required).
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RTV sealant (for sealing water pump gasket). Do not apply RTV sealant to the O-rings.
NOTE: Use only non-volatile oxygen sensor safe RTV sealant. This should be clearly indicated on the package.
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Engine Coolant.
NOTE: For optimum performance, use 50/50 mixture of high quality ethylene glycol coolant and water.
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Chassis Grease GM P/N 1051344 or equivalent (lubricate splines of coolant pump drive).