Precision-Engineered HBK411 Head Bolt Kit for 95-12 Ford/Mazda/Lincoln/Mercury 2.5L-3.0L V6 DOHC Engines

High-Strength Alloy Steel Construction: Forged from aerospace-grade alloy steel with ISO 898-1 certification, ensuring 180,000 PSI tensile strength and vibration resistance under extreme engine loads.

Torque-to-Yield (TTY) Precision: Laser-etched torque sequencing marks and micro-finished threads eliminate galling while providing consistent clamping force across all cylinders.

OEM+ Upgrade Design: CNC-machined flange heads with integrated sealing washers outperform factory bolts in corrosion resistance (1,000-hour salt spray tested).

Direct Fit for 95-12 Model Years: Specifically engineered for Ford Duratec/Mazda AJ-series 2.5L-3.0L V6 applications including Taurus, Escape, Fusion, Milan, and MX-6/Millenia platforms.

Pro Installation-Ready: Includes pre-applied moly coating for accurate torque values - critical for aluminum head applications in naturally aspirated engines.