GM30263 30263 Water Sensor / Coolant Pressure Switch Product overview This GM30263 30263 water sensor functions as a coolant pressure switch designed to monitor coolant presence and pressure in compatible engine systems. It is a direct replacement part for the listed models and variations, engineered to match original equipment specifications for fit and basic performance. Key benefits Accurate monitoring: Detects changes in coolant pressure to provide timely input to engine control or safety systems. Direct fit replacement: Matches the listed replacement number for straightforward installation and minimal downtime. Broad compatibility: Fits a wide range of engine model variations, reducing the need to source multiple different parts. Durable operation: Intended for routine engine cooling system use under normal operating conditions. Main features and specifications Part number: GM30263 30263 replacement. Function: Water sensor and coolant pressure switch. Compatibility note: Compatible with variation GR3 8EOZD and 6.5EFOZD and fits models 11EFOZD, 13EOZD, 11.5EFOZD, 14EOZD, 13EFOZD, 15EOZD, 15.5EOZD, 17EFOZD, and 20EOZD. Additional compatible models: 4EFCD, 5ECD, 6EFCD, 7.3ECD, 5EKD, 4EFKD, 7.5EKD, 6EFKD, 10EKD, 8EFKD, 10EG, 13EG, 13EGZ, 15EG, 15EGZ, 6EOD, 4.5EFOZD, 7EFOZD, 9EOZD, 8.5EFOZD, 10EOZD, 9EFOZD, and 10EOZD. Intended role: Replacement coolant pressure switch for monitoring and signaling coolant system conditions. Installation and use Designed as a direct replacement for the listed models to simplify swapin installation. Typical installation requires basic tools and standard procedures for removing the old switch and fitting the unit. Follow equipment manufacturer recommendations for torque and electrical connections. Common use scenarios Routine engine maintenance: a worn or faulty coolant pressure switch during scheduled service to restore correct system monitoring. Troubleshooting coolant system alerts: Swap in this sensor when fault codes or dashboard warnings indicate a pressure or coolant sensor issue in compatible models. Generator and stationary engine upkeep: Use as a replacement part during rebuilds or preventive maintenance on compatible engine model lines. Compatibility and fit Use this GM30263 30263 sensor when the original part number or the model variations listed above are specified. Confirm model and variation codes before to ensure correct fit.