The Earl’s 1134ERL 210 ° Oil Thermostat Upgrade Kit is designed to elevate your GM LS or Gen-V LT engine’s oil-cooling performance. Built as a premium upgrade for Earl’s billet side-mount oil-cooler adapters, this thermostat increases the operating temperature threshold to approximately 210 °F (95 °C), maintaining optimal oil viscosity for high-load or racing applications.
When paired with Earl’s billet side-mount adapters, the system offers a clean, efficient way to integrate an oil cooler without interfering with headers or other components. Each adapter uses -10 AN male fittings and precision O-ring seals to ensure leak-free reliability. The black-anodized aluminum construction resists corrosion while preserving a sleek, professional appearance.
For Gen-V LT engines, the design fits Corvette and truck configurations only and may require the 1127ERL spacer plate for proper clearance between the adapter and oil pan. This upgrade is ideal for enthusiasts seeking more precise temperature control during sustained high-performance operation or towing. The 1134ERL thermostat provides smooth oil-flow transition and consistent lubrication under the most demanding conditions.
Features:
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Opens at approximately 210 °F (95 °C) for higher oil-temperature stability
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Designed as an upgrade for Earl’s billet LS and LT oil-cooler adapters
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Black-anodized billet construction with -10 AN male connections
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O-ring seals ensure leak-free installation and long-term durability
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Compatible with Corvette and truck Gen-V LT applications (does not fit Camaro)
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Gen-V LT truck engines require spacer plate (1127ERL) for proper fitment
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Provides reliable, high-flow performance for racing or towing applications
