Radiator Hose Adapter - 1 to 1-1/4

The AutoMeter Radiator Hose Adapter (1 to 1-1/4 inch) is a precision straight-fitting gauge adapter engineered to integrate temperature monitoring directly into your cooling system without requiring inline hose cuts or complex plumbing modifications. This adapter accepts both 1-inch and 1-1/4-inch radiator hose barbs, making it compatible with a wide range of cooling system configurations across passenger vehicles, light trucks, and custom engine builds.

Built from aluminum and finished in natural anodized coating, this adapter provides corrosion resistance while maintaining lightweight construction. The 3/8-inch NPT gauge port accepts standard temperature gauge fittings, allowing seamless connection to AutoMeter analog or digital temperature gauges. The straight design eliminates flow restrictions and simplifies installation in tight engine compartments where angled adapters would create fitment challenges. The adapter's compact footprint (5.7 x 1.9 x 11.5 inches) integrates into existing cooling lines without requiring extensive re-routing.

This adapter serves builders and enthusiasts who need precise coolant temperature data for engine tuning, performance diagnostics, or condition monitoring. Dual-size barb compatibility makes it invaluable for hybrid cooling systems or when upgrading hose diameters without replacing the adapter itself. Whether monitoring a turbo engine's thermal load, verifying water pump performance, or tracking cooling efficiency during dyno sessions, this AutoMeter adapter provides a standardized connection point for temperature instrumentation without compromising system integrity or requiring aggressive modifications.