King Engine Bearings CR6619SI1.25 SI Series Connecting Rod Bearing Set Oversize - 1.25mm

The King Engine Bearings CR6619SI1.25 is a complete connecting rod bearing set designed for Ford V6 engines, featuring King's proven SI Series bi-metal aluminum-silicon construction. This +1.25mm oversize set is engineered for engine rebuilds where crankshaft journals have been ground beyond standard dimensions, restoring proper oil clearance and ensuring reliable bottom-end performance.

King's SI Series material is lead-free and specifically formulated for engines equipped with nodular cast-iron crankshafts, making it an ideal OE-style replacement for medium-load engine applications. Each bearing shell is manufactured to King's exacting tolerances, maintaining consistent wall thickness and dimensional accuracy throughout the set.

Key Features:

• SI Series bi-metal construction — aluminum-silicon alloy layer bonded to a steel backing for superior conformability and embeddability
• +1.25mm oversize — engineered for use with crankshaft journals ground 1.25mm undersize
• Lead-free material — environmentally responsible and compatible with modern engine oils
• "Bull's Eye" wall thickness tolerance — precision manufacturing maintains rod bearing wall thickness to ±0.0001", tighter than industry standard
• Excellent embedability — the aluminum-silicon alloy layer captures minor debris to protect crankshaft journals
• Optimized oil groove geometry for stable hydrodynamic lubrication and improved oil wedge formation
• Complete set included — all connecting rod bearing shells required for a full engine rebuild

Designed for professional engine builders and experienced rebuilders, the CR6619SI1.25 delivers the precision fit and durability that King Engine Bearings is known for worldwide. King's focus exclusively on engine bearings means every set benefits from decades of racing-derived R&D applied to both performance and OE-replacement applications.