Sealey Glow Plug Thread Repair Replacement Inserts

The VS311.04 replacement inserts feature M12 thread size with 1.25mm pitch, making them suitable for larger diesel engines and heavy-duty applications. These inserts are specifically designed for use with the Sealey Model No. VS311 thread repair kit, providing professional thread restoration for vehicles requiring M12 x 1.25mm glow plug thread specifications. Supplied in a pack of 5, these larger inserts are essential for workshops servicing commercial vehicles, agricultural machinery, and larger displacement diesel engines. The M12 size provides increased thread engagement