Manley 221448P-16 Manley NexTek Valve Springs | Atech Motorsports Energy Suspension Motor Mounts/Motor Mount Inserts the gauge features a precision

the gauge features a precision Bourdon tube movement for accurate pressure readings

Stop losing spark energy through worn wires

The lobe separation angle is optimized for your specific application

The Dart Chrome Valve Covers combines engine bay aesthetics with functional crankcase oil control

No cutting or fabrication required

Manley 221448P-16 Manley NexTek Valve Springs | Atech Motorsports Energy Suspension Motor Mounts/Motor Mount Inserts the gauge features a precisionThe Manley 221448P 16 Manley NexTek Valve Springs Atech Motorsports provide the required spring pressure for aggressive cam profiles without coil bind or surge at high RPM. Manley Professional valve springs are wound from proprietary wire stock and heat set to prevent pressure loss over time. Part 33474 is configured for its specific application with attention to fitment requirements. Each spring is tested for installed height pressure, open pressure,