Precision Works Cylinder 4 Cooling Mod - 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT

Precision Works Cylinder 4 Cooling Mod Subaru EJ Engines

Key Features:

• Increase flow to cylinder 4
• Reduce cylinder 4 temperatures to keep all cylinders temp. even
• Reduce knock and detonation
• Prevent ring land failure
• 6061 billet aluminum
• Precision CNC machined
  
• Multi-layer silicone hose
• Stainless steel clamps