Crower 66312-2 Features:

Designed for Chevrolet LS1 Warhawk Block applications Hydraulic roller lifters sold as a pair Redesigned 1-piece body and bearing reduce weight Maximum rigidity and axle trueness for valvetrain stability

Hydraulic Roller Lifters LS1 Warhawk Block Pair One-piece Hydraulic-roller Features:

• One-piece integral body and bearing design for reduced weight and maximum rigidity in LS1 Warhawk Block valvetrains
• Precision flow-checked internals for optimum leak-down rates and more consistent hydraulic roller lifter operation
• High axle trueness and strength-focused construction for stable roller action under performance engine demands
• Hydraulic roller design combining race-inspired valvetrain performance with reliable daily-driven operation
• Direct-fit pair for Chevrolet LS1 Warhawk Block applications, engineered by Crower for exact-fit performance builds