When a block is machined or cleaned, the old expansion plugs come out and should never go back in. This kit gathers every brass water jacket plug and threaded pipe plug the listed GM big block engines need, so the block can be sealed in one pass instead of sourcing plugs one at a time.

Melling MPE-275BR Kit Contents and Fit

• Covers GM and GMC 6.0L, 7.0L and 7.4L engine applications.
• Combines press-fit water jacket plugs with the screw-in pipe plugs required to finish the job.
• Brass plugs resist corrosion in coolant passages.
• Built to standard replacement specifications for stock rebuilds.