Schoenfeld Conventional Crossover Headers - 1.625 in Primary - 3 in Collector - Black Paint - Small Block Chevy 135 - Pair 29061BK Be sure to check the PYRHB946325 Size:3X-Large (68) TS-0204-1135 2017 2019 GMC Sierra

Schoenfeld Conventional Crossover Headers 1.625 in Primary 3 in Collector Black Paint Small Block Chevy 135 Pair 29061BK Be sure to check the PYRHB946325 Size:3X Large (68) TS 0204 1135 2017 2019 GMC Sierra Be sure to check the diameter of your brake rotor to ensure proper fitment Features:Designed to fit low in the block to clear firewall and intake combinationsSupplied with bronze gearSupplied with large diameter HEI style distributor cap and rotorMust be used with an MSD Crank Trigger and MSD Ignition ControlO ring seals can be added to modified blocks to improve oil pressure controlSpecial oil tract improves lubrication to the distributor and cam gearShaft is guided by a sealed ball bearing and an extra long sintered bushingOversized polished steel shaft with a QPQ coating for friction reductionAdjustable slip collar mounting flange for engines with modified deck heightsCNC machined billet aluminum housing and Dupont Rynite base