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7H2961 - 1.1/4" (31.75mm) cup core plug.
Fitted to the Perkins D3.152 and AD3.152 engines
Fitted to the following tractors:
Nuffield DM4 fitted with Perkins P4 engine.
Leyland 253, 245
Leyland 502
Marshall 502.
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.

To fit a core plug you must first ensure that the surface is clean and clear of all debris. You can offer up the core plug to make sure it is the correct size, as other size core plugs are available. You can use a small smear of a Bondloc B270 which is a high temperature Studlock on the outside of the core plug to ensure a better seal. Then simply tap it in square with a suitable sized flat face.