Porsche Recaro Headrest Grommet Set 69-73 901-521-811-00 930-559-317-01 Allows you to measure pressure

Allows you to measure pressure within the combustion chamber as the piston comes up on the compression stroke

912 and 914 (1965-1983) models

Please note this item does not come with the cover

Porsche Left side short threshold sill for the rocker panel on all 356 (1950-1965) models

914-4 and 914-6 (1969-1971) models

Porsche Recaro Headrest Grommet Set 69-73 901-521-811-00 930-559-317-01 Allows you to measure pressurePorsche Recaro headrest grommet set for 1972 1973 sport seats, will also fit all seats 1969 1973. Includes retaining washers to keep grommets flush with the seat. One set required per seat, two sets required per car.