No head removal required for valve spring changes, saving time and labor
Patented design ensures precise fitment and compatibility with Barra DOHC 4.0L engines
Integrated Viton O-ring air seal prevents leaks and protects engine components
300M aerospace steel compression cups provide superior strength and slim profile for improved access
Direct cylinder pressurisation through spark plug thread enables efficient operation
On-Car Valve Spring Tool
Original Patented Design | Part No. 100704
No Head Removal Required
The Atomic Valve Spring Tool is the **original Barra on-car spring compressor tool** designed specifically for Ford Barra DOHC 4.0L engines. Now refined and improved for 2026, this latest version significantly improves clearance and acce
Part Number
100704
Compression Cup Material
300M aerospace steel
Cup Material
3D printed
Sealing
Integrated Viton O-ring
Application
Ford Barra DOHC 4.0L (BA, BF, FG, FGX)
Included Accessories
Magnetic pick-up tool, nitto air fitting, M6 thumb screws, M8 bolts