INA ZT-91091 Engine Timing Chain Tensioner - Lower

Engine Timing Chain Tensioner for MR18DE Applications

The INA ZT-91091 engine timing chain tensioner is a direct-fit timing drive component for select Nissan models with the MR18DE engine. It helps maintain proper chain tension so the valve train can keep accurate timing under normal engine operation.

Compatible With 2007-2012 Nissan Sentra, lower; 2007-2012 Nissan Versa, lower; and 2009-2013 Nissan Cube, lower. Part number ZT-91091 is built for timing drive repair work where consistent chain control and dependable operation matter.

Key Features

• Engine timing chain tensioner for the lower timing drive position
• Fits Nissan Sentra, Nissan Versa, and Nissan Cube applications with the MR18DE engine
• INA Global Number 551 0438 100 cross-reference
• Supports correct gear ratio control in the timing system
• OE-style repair solution for timing chain service

Detailed Description

INA ZT-91091 is part of a timing drive repair solution focused on chain and belt drive components. In the valve train, the tensioner helps keep the timing chain properly loaded so the engine can maintain synchronized camshaft and crankshaft operation. This part is listed for the lower position on 2007-2012 Nissan Sentra, 2007-2012 Nissan Versa, and 2009-2013 Nissan Cube models equipped with the MR18DE engine. If you are servicing a Nissan Sentra, Nissan Versa, or Nissan Cube timing system, ZT-91091 provides a targeted replacement for the specified application.

This part cross-references INA Global Number 551 0438 100 for the same application.

What It Helps Address

• Timing chain slack
• Chain noise from a worn tensioning component
• Incorrect valve timing caused by poor chain control
• Timing drive wear during engine service
• Lower timing system replacement needs on MR18DE engines

Installation Notes and Tips

• Verify engine code MR18DE before ordering.
• Confirm the lower timing drive position matches the removed part.
• Inspect the timing chain, guides, and related components during service.
• Follow factory timing procedures and torque specifications during installation.

Quality Assurance

INA supplies timing drive components for repair applications that require accurate gear ratio control and dependable operation with low maintenance requirements.