NISSAN 13021-1CA0A Crankshaft Timing Chain Sprocket

The genuine NISSAN 13021-1CA0A timing chain sprocket (crankshaft sprocket / GEAR CRANK) is an essential component of the internal combustion engine's valve timing mechanism. Mounted directly on the crankshaft, it transfers driving torque to the timing chain, maintaining precise synchronization between piston movement and the valve opening and closing phases.

Function and Technical Summary

The timing chain sprocket is subjected to continuous friction and mechanical stress. Manufactured from hardened alloy steel in compliance with genuine NISSAN engineering specifications, its precision-machined tooth profile minimizes chain wear and ensures quiet, vibration-free operation.

• Component Type: Crankshaft timing chain sprocket (GEAR CRANK)
• Installation Position: Crankshaft, engine timing assembly
• Material: High-strength, surface-treated hardened steel
• OEM and Interchange Part Numbers: 13021-1CA0A, 13021AR002, 13021AR00A

Symptoms of Wear and Tear

Wear on the sprocket teeth (such as hooking, sharpening, or asymmetric wear) increases chain slack, leading to engine rattling or clicking noises, altered valve timing, and potentially catastrophic chain jumping or breakage. During timing system maintenance and timing chain replacement, replacing the crankshaft sprocket is technically critical to ensure uniform durability and service life across all timing drive components.

Compatible Vehicle Models

• Nissan Armada (Y62) [2010 - 2017] (GEAR CRANK)
• Nissan Fx45/35 (S50) 4.5 [2005 - 2008] (GEAR CRANK (VK45DE))
• Nissan M35/45 (Y50) 4.5 [2005 - 2008] (GEAR CRANK (VK45DE))
• Nissan Q45 (F50) 4.5 [2001 - 2008] (GEAR CRANK (VK45DE))
• Nissan Q70/M (Y51) 5.6 [2010 - 2016] (GEAR CRANK (VK56VD))
• Nissan Qx70/Fx (S51) 5.0 [2008 - 2018] (GEAR CRANK (VK50VE))
• Nissan Qx80 (Z62) 5.6 [2010 - 2017] (GEAR CRANK (VK56VD))