INA ZS-S909 Engine Timing Idler Sprocket

INA Timing Idler Sprocket for Nissan Applications

The INA ZS-S909 is an engine timing idler sprocket built for Nissan valve train service where accurate timing gear operation matters. It is a direct-fit replacement for select Frontier, Xterra, Altima, and 240SX applications, with OE-level material and heat-treatment standards.

• Engine timing idler sprocket for valve train service
• Made from powdered metal, steel, or cast iron depending on application requirements
• Heat treated to exact hardness specifications
• OE-quality replacement for select Nissan timing gear applications
• Cross-references INA Global Number 554 0853 100

Fitment Details

• Fits 1998-2004 Nissan Frontier, N/A
• Fits 2000-2004 Nissan Xterra, N/A
• Fits 1998-2001 Nissan Altima, N/A
• Fits 1998 Nissan 240SX, N/A

Product Overview

INA ZS-S909 timing gear/sprockets are manufactured to meet or exceed OE quality and performance expectations for timing system service. This engine timing idler sprocket is used in Nissan timing assemblies where consistent gear engagement and precise valve timing are required. If you are replacing a worn timing sprocket on a Nissan Frontier, Nissan Xterra, Nissan Altima, or Nissan 240SX, this part number provides a direct replacement path.

Common Problems This Part Addresses

• Timing gear wear or tooth damage
• Noise from a worn idler sprocket
• Incorrect camshaft timing caused by sprocket wear
• Timing system service on high-mileage engines
• Replacement of a damaged OE timing gear

Installation Notes and Tips

Verify engine code and timing component layout before installation, since timing system parts must match the exact application. Inspect related timing components, guides, and tensioners during service, and follow factory timing marks and torque specifications during assembly. Confirm the part number ZS-S909 and the INA Global Number 554 0853 100 before installation.

Quality Assurance

INA manufactures timing gears and sprockets using high-quality metal materials and controlled heat treatment to support OE-level fit and performance. Part number ZS-S909 is engineered for precision timing service in the listed Nissan applications.