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This is a freeze/expansion plug kit for the 4/6B Cummins engine block. This kit also includes the cylinder head/block alignment dowels as pictured.
Includes freeze plugs for the block, cylinder head alignment dowels on 89-98 3.9L & 5.9L Cummins diesel engines.
This kit can also be used on 98.5-02 trucks BUT it does not include any of the cylinder head freeze plugs.
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