Dart 63121502 valve guide for GM LS1. Features an 8mm valve, 2.150in long, 0.439in OD, made from manganese bronze, designed for racing builds to ensure precise valve alignment. Enhances durability in...

Dart 24000021 valve lock pair for 11/32in valve stems. Features a 10-degree design, standard height, made from chromoly with a black oxide finish, designed for racing builds to secure valve springs...

Dart VS1650 valve seat for intake/exhaust. Features a 1.650in OD, 1.250in ID, 0.350in deep, made from powdered metal, designed for racing builds to ensure precise valve seating. Enhances durability...

Dart VS2000 valve seat for exhaust. Features a 2.000in OD, 1.600in ID, 0.375in deep, made from powdered metal, designed for racing builds to ensure precise valve seating. Enhances durability in...

Dart VS2160 valve seat for intake. Features a 2.160in OD, 1.810in ID, 0.350in deep, made from powdered metal, designed for racing builds to ensure precise valve seating. Enhances durability in...

Dart VS2450 valve seat for intake. Features a 2.450in OD, 2.000in ID, 0.375in deep, made from powdered metal, designed for racing builds to ensure precise valve seating. Enhances durability in...

Dart VS2460 valve seat for intake. Features a 2.460in OD, 2.000in ID, 0.375in deep, made from powdered metal, designed for racing builds to ensure precise valve seating. Enhances durability in...

Dart 32000121F windage tray kit for GM LS-Series LS Next blocks. Features a rear sump, louvered design for wet sump, made from steel with a natural finish, designed for racing builds to control oil...