DIAMONDORIGINAL 4HK1 6HK1 Main & Connecting Rod Bearings – Precision Engine Performance
Premium-grade bearings engineered for 4HK1 and 6HK1 engines, ensuring optimal load distribution and reduced friction. High-strength aluminum alloy with micro-groove surface treatment enhances durability and heat dissipation. Precision-machined to OEM specs (8-94391-514 / 8-94395-757) for seamless compatibility. Ideal for heavy-duty trucks, industrial machinery, and marine engines requiring reliable long-term performance. Direct bulk pricing from global wholesale supplier—unmatched value for fleet operators and engine rebuilders. Trusted quality, rigorously tested for extreme conditions. Upgrade with confidence.