|This high quality exhast/engine studs produced from corrosion resistant 321 stainless steel in 5/16-18" X 5/16-24" standard thread size are a direct replacement for the TCM Continental part number 402-151 stud. FAA/PMA approved for the Continental engines C-75, C-85, C-90, O-200 series engines, and o-300 (early) series engines.|
These are the exhaust studs. Manufactured under a STC by a machine shop. Excellent quality beautifully manufactured Im not accustomed to this much attention detail with A/.N Hardware. Pricey but well worth it
1-13/32 inch length.