Manley 221448P-16 Manley NexTek Valve Springs | Atech Motorsports Energy Suspension Motor Mounts/Motor Mount Inserts The Dart Chrome Valve Covers

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

The Manley 11547-8 Manley Severe Duty Series Stainless Steel Valves are precision-machined valves for high-performance cylinder heads

Stop losing spark energy through worn wires

Hold 450 ft-lbs with a pedal feel you can live with

a quality damper is cheap insurance

Manley 221448P-16 Manley NexTek Valve Springs | Atech Motorsports Energy Suspension Motor Mounts/Motor Mount Inserts The Dart Chrome Valve CoversThe 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,