Title : Intake Manifold Bolts. Intake & Exhaust System. 1set of Intake Manifold Bolts (12pcs). Will Not Fit: GEN II, III, IV, V Engines (TPI, LT1, Vortec 4.8 5.3 5.7 6.0 6.2L, LSX, LT5 Engines). We specialize in automotive car parts and is the No.1 industry distributor for affordable and quality products.