INA ZT0001 Engine Timing Chain Tensioner Adjuster - Upper

BMW Timing Chain Tensioner Adjuster

INA ZT0001 is an engine timing chain tensioner adjuster for select BMW applications. It is used in the timing drive to help maintain correct chain tension and gear relationship for consistent engine operation.

• Engine timing chain tensioner adjuster for BMW upper timing drive applications
• Fits select 1991-2006 BMW models, including 325Ci, 330Ci, X3, X5, 325i, 330i, 525i, 530i, Z4, Z3, 323i, 328i, 528i, and M3
• INA Global Number 551 0001 100
• Cross-references BMW 11 31 1 738 700 and 5510001100 for the same application
• Built for timing drive repair service where accurate chain control is required

Application Details

This timing chain tensioner adjuster is used in upper timing drive positions across a wide range of BMW inline-six applications. Compatible vehicle coverage includes Fits 2001-2006 BMW 325Ci, Upper; Fits 2001-2006 BMW 330Ci, Upper; Fits 2004-2006 BMW X3, Upper; Fits 2001-2006 BMW X5, Upper; Fits 2001-2005 BMW 325i, Upper; and Fits 1994-1999 BMW M3, Upper. Additional coverage includes BMW 320i, 525i, 530i, Z4, Z3, 323i, 328i, and 528i applications listed in the fitment data.

What It Helps Address

• Timing chain slack in the upper timing drive
• Noise from worn or weak chain tension control
• Incorrect chain tracking or unstable timing drive operation
• Restoration work on BMW timing system service
• Replacement of a worn engine timing chain tensioner adjuster

Installation Notes

Verify engine code, model year, and upper-position fitment before installation. Compare the original part number and the INA Global Number 551 0001 100 to confirm application match. Because timing drive service affects valve timing, installation should be performed with proper engine timing procedures and inspection of related chain-drive components.

Quality Assurance

INA supplies repair solutions for chain and belt drive components with an emphasis on correct gear ratios, reliable operation, and low maintenance requirements. This part is engineered for timing drive service in BMW applications where precise chain control is required.