Part Number: PW-COOLANT-MOD-SUB

Description: Precision Works Cylinder 4 Coolant Mod

Fitment: 15-21 Subaru STI

Details:

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