ACL Bearings 4B1606HC-STD High-Performance Rod Bearing Set

The ACL Bearings 4B1606HC-STD is a Race Series connecting rod bearing set featuring Calico CT-1 coating for VW/Audi 1.6L, 1.8L, and 2.0L engines (1781cc/1984cc displacement). This standard size bearing set is designed for 2V, 4V, 5V, and turbo applications from 1983-2003. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world, with Race Series rod and main bearings being standard components in race engines from sport compact drift racing to NASCAR, IHRA, and NHRA competitions.

CT-1 Calico Coating Technology:

• CT-1 Dry Film Lubricant coating helps reduce friction and abrasive wear while providing intermittent dry lubrication that is not affected by dust or dirt
• Specifically engineered to withstand extreme conditions of high-performance engines with increased embeddability, strength and durability
• CT-1 coated bearings have shown a reduction in oil temperatures as much as 15°F - 20°F
• Provides dry film lubricant protection during cold starts and rough terrain conditions when oil film may be compromised
• Typical coating thickness ranges from 0.00025" to 0.00030" inch (6 to 7.5 microns)

Race Series Design Features:

• Large chamfer to accommodate larger crankshaft fillets
• 3/4 groove design provides optimum oil supply to rods and maximizes load carrying capacity
• Increased crush and tighter wall tolerance for better seating
• Improved overlay with reduced thickness for increased fatigue strength
• Hardened steel backing to maintain crush under high loads and temperatures
• Tri-metal construction with high-strength overlay plate designed to withstand higher RPM conditions

OEM reference numbers include: 034 105 701, 034 198 501, 048 105 701, 053 105 701 B. This bearing set is designed for professional engine builders and performance enthusiasts seeking maximum reliability and durability in demanding applications.