Allstar Performance Master Cylinder Plug Kit — 1/2-20 & 9/16-28 in | ALL99258 1972-gmc-k35-k3500-pickup-esi6118230 This kit has 6 pins

This kit has 6 pins

it's also what leaves it open to carbon buildup and detonation caused by blow-by

Fleece Performance 03-18 Dodge 2500/3500 Cummins Upper Fan Pulley Idler (Black Contrast)

Fits upper and lower connection

Allstar Performance Master Cylinder Plug Kit — 1/2-20 & 9/16-28 in | ALL99258 1972-gmc-k35-k3500-pickup-esi6118230 This kit has 6 pinsThis Allstar Performance master cylinder plug kit is made from zinc plated steel and includes plugs in 1 2 20in and 9 16 28in thread sizes, covering both common master cylinder port sizes. Compatibility Universal master cylinder port plug kit, two thread sizes included: 1 2 20in and 9 16 28in. FAQ What thread sizes are included in the ALL99258 kit? The ALL99258 kit includes plugs for 1 2 20in and 9 16 28in threaded ports. What is the ALL99258 made