Ferrea Dual Valve Spring 80lbs - 90-96 Nissan 300ZX VG30D/VG30DETT - Set of 24 - S10039 3.0" to 4.5" The Subaru EJ engine has

The Subaru EJ engine has 3 ports that vent crank pressure: one on each cylinder head and another on the top of the block

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Mishimoto silicone hoses retain OEM fitment while providing increased pressure tolerance for the ultimate upgrade in performance and style

Ferrea Dual Valve Spring 80lbs - 90-96 Nissan 300ZX VG30D/VG30DETT - Set of 24 - S10039 3.0" to 4.5" The Subaru EJ engine hasThe design and processes on these dual valve springs are optimized to reduce valvetrain harmonics and provide greater stability on high horsepower applications. We use high grade premium super clean PAC alloy materials and maintain tight tolerances for those unique aftermarket cylinder heads. 3. 0L DOHC 24 Valve (VG30D Turbo VG30DTT) Type Material Application: Dual Spring Chrome Silicon Outside Diameter: 20. 8 28. 0 Inside Diameter: 15. 3 mm 20. 18 mm