Description
Aeroflow GM LS3 Hi-Flow Thermostat (160°F / 71°C)
Optimize engine cooling efficiency and maintain lower operating temperatures with Aeroflow Performance high-flow thermal technology.
Engineered specifically for GM LS3 V8 engines, the Aeroflow AF49-1145 Hi-Flow Thermostat features a 160°F (71°C) opening rating—significantly lower than standard factory units. By opening sooner, it allows engine coolant to begin circulating through the radiator earlier, reducing engine operating temperatures and heat soak under heavy loads. Lower operating temperatures improve both thermal and volumetric efficiency, enabling your engine to generate consistent power during track days and high-performance driving.
Constructed from high-grade copper and steel components, this unit offers robust reliability against high coolant pressures and temperature spikes. Designed as a direct drop-in replacement, it fits seamlessly into the standard housing with no modifications required and comes complete with a replacement rubber sealing gasket.
Key Features
- ☑ 160°F (71°C) opening temperature for earlier coolant flow
- ☑ High-flow design improves overall volumetric cooling efficiency
- ☑ Durable copper and steel construction for maximum lifespan
- ☑ Direct drop-in fitment for GM LS3 applications
- ☑ Includes replacement rubber sealing gasket (56mm O.D.)
Technical Specifications
| Manufacturer | Aeroflow Performance |
|---|---|
| Part Number | AF49-1145 |
| Engine Application | GM LS3 Series V8 Engines |
| Opening Temperature | 160°F (71°C) |
| Material | Copper / Steel |
| Included Accessories | Rubber Seal Gasket (AF59-1145 equivalent) |
What’s Included in the Box
- 1 x Aeroflow GM LS3 Hi-Flow Thermostat (160°F / 71°C)
- 1 x Direct-Fit Thermostat Rubber Sealing Gasket
JP Racing is a trusted UK supplier of genuine Aeroflow Performance components. Count on our technical expertise and fast UK dispatch to keep your high-performance engine build running cool and reliable.
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