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Quality replacement 10 PSI pressure cap for the cooling system of selected Nuffield and Leyland Lightweight tractors.
This cap is designed to maintain the correct pressure within the cooling system, helping to raise the coolant's boiling point and improve cooling efficiency. Depending on the cooling system configuration, it is fitted either to the expansion tank or directly to the radiator.
Tractors fitted with an expansion tank (ARJ38):
Tractors without an expansion tank:
Maintaining the correct cooling system pressure is essential for efficient engine cooling. A faulty or worn pressure cap can allow coolant to escape prematurely or prevent the system from reaching its designed operating pressure.
Before ordering, it is important to identify whether your tractor is fitted with an ARJ38 expansion tank. Tractors with an expansion tank require this GRC109 pressure cap on the expansion tank and the GRC201 flat cap on the radiator. If your tractor does not have an expansion tank, this cap fits directly onto the radiator.
Please also check the overall cap depth and sealing depth to ensure compatibility with your existing cooling system.
Ideal for customers searching for GRC109 radiator cap, GRC109 expansion tank cap, 10 PSI radiator cap, Leyland 154 radiator cap, Nuffield 4/25 radiator cap, ARJ38 expansion tank cap, GRC201 radiator cap and vintage tractor cooling system parts.
We specialise in quality parts for Nuffield, Leyland and Marshall tractors and aim to supply reliable tractor spare parts that fit correctly and perform reliably.
Original equipment manufacturers names and parts numbers are quoted for reference purposes only and are not intended to suggest that our replacement parts are made by the original equipment manufacturer.
Product images are for illustrative purposes only and may not always be an exact representation of the product.
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