Mitsubishi 4G63 DOHC Exhaust Valve Guide x 8 VG63E-8 prppop The two part numbers are

The two part numbers are identical except the pressure relief valve opens at 112 PSI on the F90000274 opposed to 87 PSI on the F90000267

Stainless Steel Rods and Clevis

The Turbosmart Modular Combo (Reference & Sensor) Manifold

billet valve technology and adds an onboard proprietary solenoid system and internal pressure control channels for a simple plug & play valve with full OE integration and control

Mitsubishi 4G63 DOHC Exhaust Valve Guide x 8 VG63E-8 prppop The two part numbers areOD: 12. 06mm. ID: 6. 55mm. Exhaust valve guide for Mitsubishi 4G63 DOHC. OD: 12. 06mm. ID: 6. 55mm. Set of 8. \nHigh quality precision machined. Made from our own proprietary Manganese Bronze. All guides need honing after fitment.