Badger Pistons B576 P576-020 .020" Oversize Piston Flat Top 454 7.4L GM V8 BBC Wiring Harness (Stamped 84-66962) Your part numbers

(Stamped 84-66962) Your part numbers should match or it could be used to swap to 84-86673A2 as they superseded each other

16-23345 Stud Set of 6

MerCruiser 25-45711 O-Ring (The Smaller One)

3L 2bbl & 4bbl models 1985-1989 (These will work for 1990-1993 models as well but the oil cap style is different)

Badger Pistons B576 P576-020 .020" Oversize Piston Flat Top 454 7.4L GM V8 BBC Wiring Harness (Stamped 84-66962) Your part numbersPart Number(s) Included Badger Pistons P576 020 (0. 020" Oversize) Piston & Pin Assembly Stamped B 576 020 (B576) THESE ARE 0. 020" OVERSIZE PISTONS I'm assuming you have already done your research on these. Set of 6 as pictured General Application Compatibility Unsure of the year range that these 454 7. 4L pistons would fit Again, hopefully you have already done your research on this. Other Details Freshwater Used Parts These have been individually