Radiator Hose Drain 3/8 Petcock 1-1/2/1-1/2 Hose

The Radiator Hose Drain 3/8 Petcock 1-1/2/1-1/2 Hose by MOROSO is an essential cooling system maintenance component designed for serious enthusiasts and mechanics who demand precision in their engine builds. This petcock valve allows controlled drainage of coolant during system service, winterization, or component replacement without spillage or mess. Whether you're performing routine maintenance on a street machine or managing coolant levels in a high-performance build, this drain valve eliminates the frustration of removing hoses or dealing with overflow tanks.

Built by MOROSO, a trusted manufacturer of performance cooling solutions, this petcock features a 3/8-inch valve body with dual 1-1/2-inch hose barbs designed to accommodate standard radiator hose sizes common in both classic and modern engine builds. The ball valve mechanism provides smooth on-off control with minimal leakage, and the compact 5.8-inch overall length ensures integration into tight engine compartments. The dual-hose configuration allows flexible routing around engine components, while the robust valve construction withstands standard coolant pressures and thermal cycling without degradation.

This drain petcock suits builders working on street rods, muscle cars, custom trucks, and performance vehicles where accessible coolant drainage is a practical necessity. Installation is straightforward—simply cut the lower radiator hose or coolant line and insert the barbs into fresh hose sections, securing with quality hose clamps to prevent weeping. The lightweight design (0.53 lbs) adds negligible weight to your cooling system, and the compact footprint makes it ideal for retrofitting into existing builds or incorporating into new custom cooling loops where gravity-drain access is limited.