FEULING Race Series Hydraulic Lifters 4017 (4050)

FEULING Race Series hydraulic lifters, part number 4017, are machined from a steel body and designed to meet the demands of large-lift camshafts and higher valve spring pressures. Their slower bleed-down rate supports valvetrain stability while helping maintain proper oil flow to the engine’s top end.

These full-travel lifters are engineered to help increase engine RPM, reduce valve float and promote maximum valve lift. FEULING recommends the Race Series lifters for engines operating above 185 pounds of valve spring seat pressure and recommends using a high-volume oil pump for quieter, better-performing lifters.

FEULING Race Series hydraulic lifters 4017 are compatible with FEULING HP+ and Race Series oil pumps and are designed for both street and strip engines. They were Spin-Tron dyno developed and track proven, and are made in the U.S.A.

Features:

• Construction: Machined from a steel body for demanding valvetrain applications
• Performance: Designed for large-lift camshafts and higher valve spring pressures with a slower bleed-down rate
• Valvetrain stability: Helps maintain top-end oil flow, increase engine RPM, reduce valve float and promote maximum valve lift
• Application guidance: Recommended by FEULING for engines running higher than 185 pounds of valve spring seat pressure
• Oil pump recommendation: FEULING recommends using a high-volume oil pump for quieter, better-performing lifters
• Compatibility: Designed for use with FEULING HP+ and Race Series oil pumps
• Engine use: Recommended for performance street and strip engines
• Development: Spin-Tron dyno developed and track proven
• Origin: Made in the U.S.A.