How long does a water pump replacement last?
How long does a water pump replacement last? Manufacturer recommendations will usually range from 3 to 5 years or 50,000 to 100,000 miles. In areas with more severe hot or cold weather, that interval may be more frequent. When did Pontiac change to high flow water pump? The early 1969 water pump was 11 bolt and measures 4". In mid-1969, Pontiac changed to a 4.5" water pump. If you do not have the 4.5" model water pump or opt to upgrade to a high flow water pump, which measures 4.5", you will need to replace your pulley as well. We...