Coolant Temperature Sensor Adapter for All Chevy GM LS Engine M12-1.5

Product Overview

This coolant temperature sensor adapter converts an M12-1.5 port to a standard 1/2-inch NPT thread, enabling installation of a coolant temperature sensor in LS engine blocks or intake manifolds. Ideal for engine swaps and custom cooling systems, this adapter ensures a secure and leak-free connection for accurate temperature monitoring.

Key Features & Performance

• Precision-machined from high-grade aluminum for strength and corrosion resistance
• Converts M12-1.5 male thread to 1/2-inch NPT female thread
• Includes a pre-installed O-ring for a leak-proof seal
• Compatible with most 1/2-inch NPT coolant temperature sensors
• Compact design fits tight engine bay spaces
• Easy to install with basic tools – no special adapters needed

Fitment & Compatibility

• Compatible with all GM LS series engines (LS1, LS2, LS3, LS6, LS7, LS9, LSA, etc.)
• Works with Chevrolet small block and big block engines that use M12-1.5 coolant ports
• Fits many GM vehicles including Camaro, Corvette, Silverado, Suburban, GMC Sierra, and more

Common Uses

• Installing aftermarket coolant temperature gauges
• Engine swaps requiring a temperature sensor port
• Custom radiator and cooling system builds
• Replacing damaged or missing factory sensor adapters
• Installing a more accurate temperature sensor

Technical Specifications

• Thread Type (Male): M12-1.5
• Thread Type (Female): 1/2-inch NPT
• Material: 6061-T6 Aluminum
• Color: Silver
• O-Ring Included: Yes

Frequently Asked Questions

Q: Will this adapter work with an LS3 engine? A: Yes, this adapter is designed for all LS engines including the LS3, as long as the port is M12-1.5.

Q: Does this product include a temperature sensor? A: No, this is an adapter only; a separate 1/2-inch NPT coolant temperature sensor is required.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.