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INA ZT-9-5345 Engine Timing Chain TensionerOE Quality 60-Day Returns
Part #: ZT-9-5345

INA ZT-9-5345 Engine Timing Chain Tensioner

⚙️ 24 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Mazda, Aerostar, B4000, Explorer, and Ranger
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Engine Timing Chain Tensioner for Ford and Mazda

INA ZT-9-5345 is an engine timing chain tensioner for select Ford and Mazda applications. It supports stable timing drive operation with a repair-focused design for chain and belt drive components.

Key Features

  • Engine timing chain tensioner for valve train service
  • INA part number ZT-9-5345
  • Cross-references INA Global Number 551 0393 100
  • Built for timing drive gear ratio control and reliable operation
  • Fits select Ford Explorer, Ford Ranger, Mazda B4000, and Ford Aerostar applications

Detailed Description

INA ZT-9-5345 is a timing chain tensioner used in the engine timing drive to help maintain proper chain tension and consistent power transfer. This part is listed for 1994-2000 Ford Explorer, 1994-2000 Ford Ranger, 1995-2000 Mazda B4000, and 1994-1997 Ford Aerostar applications. This part cross-references INA Global Number 551 0393 100 for the same application. The part number ZT-9-5345 is also useful when verifying the correct replacement during timing service on Ford Explorer and Ford Ranger engines.

What It Helps Address

  • Timing chain slack
  • Noise from a worn tensioner assembly
  • Inconsistent timing drive tension
  • Reduced timing system reliability
  • Service replacement for worn chain drive components

Installation Notes and Tips

Confirm engine application by year, make, and model before installation. Inspect the timing chain, guides, and related valve train components during service, since wear in adjacent parts can affect tensioner performance. Verify the replacement against INA ZT-9-5345 and the vehicle’s timing drive configuration before assembly.

Quality Assurance

INA positions this component as part of a repair solution for chain and belt drive systems, with an emphasis on correct gear ratios, reliable operation, and low maintenance requirements.

Compatible Vehicles

  • Fits 1994-2000 Ford Explorer, N/A
  • Fits 1994-2000 Ford Ranger, N/A
  • Fits 1995-2000 Mazda B4000, N/A
  • Fits 1994-1997 Ford Aerostar, N/A

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2000FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
2000FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner
2000MazdaB40004.0LV6N/AINA Global Number 551 0393 100; Tensioner
1999FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1999FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1999MazdaB40004.0LV6N/AINA Global Number 551 0393 100; Tensioner
1998FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1998FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1998MazdaB40004.0LV6N/AINA Global Number 551 0393 100; Tensioner
1997FordAerostar4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1997FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1997FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1997MazdaB40004.0LV6N/AINA Global Number 551 0393 100; Tensioner
1996FordAerostar4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1996FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1996FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1996MazdaB40004.0LV6N/AINA Global Number 551 0393 100; Tensioner
1995FordAerostar4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1995FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1995FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1995MazdaB40004.0LV6N/AINA Global Number 551 0393 100; Tensioner
1994FordAerostar4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1994FordExplorer4.0LV6N/AINA Global Number 551 0393 100; Tensioner
1994FordRanger4.0LV6N/AINA Global Number 551 0393 100; Tensioner

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

5510393100

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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