Perfect freeze plug installation every time with the HRB 4G Freeze Plug Punch.

Designed specifically for Mitsubishi 4G-series engines, this professional-grade tool ensures accurate seating of frost plugs without risking damage to the block or plugs themselves. Built from premium materials and engineered for durability, it’s an essential addition to any serious engine builder’s toolkit.

Key Features:

• Precision-fit for Mitsubishi 4G engine frost plug sizes
• Fits 35mm and 40mm plugs
• Rigid one-piece 4140 steel construction for strength and accuracy
• Reversible two-way head for both 4G plug sizes
• High-tensile M8 cap screw for secure assembly
• Black oxide coating for corrosion resistance and long service life

Why Choose the HRB 4G Freeze Plug Punch?

Proper freeze plug installation is critical to preventing coolant leaks and ensuring long-term reliability in high-performance 4G builds. The HRB Punch is precision-machined to match the Mitsubishi 4G platform’s frost plug dimensions, making installation simple, accurate, and damage-free. Whether you’re assembling a boosted 4G63 or maintaining a naturally aspirated 4G64, this tool delivers a professional finish every time.

Ideal for Mitsubishi 4G63, 4G64, and other 4G-series engines across street, drag, and race applications. Trusted by professional engine builders, serious DIYers, and anyone who values precision and reliability in their workshop tools.