INA ZT-7212 Engine Timing Chain Tensioner

INA ZT-7212 Timing Chain Tensioner

INA ZT-7212 is an engine timing chain tensioner/adjuster for select BMW inline-six applications. It supports stable timing drive operation by helping maintain correct chain tension for consistent valve timing and reliable power transmission.

Key Features

• Engine timing chain tensioner for the valve train
• INA repair solution for chain and belt drive components
• Built for correct gear ratio control in the timing drive
• Supports low-maintenance operation in the engine timing system
• Cross-references INA Global Number 551 0364 100

Detailed Description

This INA timing chain tensioner, part number ZT-7212, is made for BMW engines that use a chain-driven timing system. It is listed for 1975-1978 BMW 530i, 1980-1981 BMW 528i, 1980-1983 BMW 320i, 1983-1984 BMW 533i, 1984-1985 BMW 318i, 1985-1989 BMW 635CSi, 1985-1992 BMW 735i, 1985-1993 BMW 535i, 1988 BMW 535is, and 1988-1992 BMW 735iL. The INA ZT-7212 is intended to help keep timing drive operation controlled and dependable in applications where chain tension is critical.

This part cross-references INA Global Number 551 0364 100 for the same application.

Common Uses

• Correcting timing chain slack in BMW 535i, 735i, or 635CSi engines
• Addressing noisy or inconsistent timing chain operation
• Restoring proper chain tension after wear in the timing drive
• Supporting accurate valve timing in high-mileage BMW engines

Installation Notes

Verify engine code and existing tensioner design before ordering. Compare the original unit to INA ZT-7212 and confirm the listed BMW fitment by year and model. Because this is a timing drive component, installation should be performed with the engine properly secured and timing marks checked during service.

Quality Assurance

INA supplies repair solutions for timing chain and belt drive components with an emphasis on reliable operation and reduced maintenance needs. Part number ZT-7212 is built for the listed BMW applications and follows the brand’s timing-drive component standards.