HomeEngine > Valve Train ComponentsNSK 70TB0803 Engine Timing Belt Idler
Part #: 70TB0803

NSK 70TB0803 Engine Timing Belt Idler

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⚙️ 12 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Acura, Honda, and Isuzu, SLX, Passport, and Trooper
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Reliable Engine Timing Belt Idler for Acura, Honda, and Isuzu Vehicles

The NSK 70TB0803 engine timing belt idler is designed to maintain proper tension and alignment in the timing belt system of select Acura, Honda, and Isuzu models. This component ensures smooth engine operation and helps prevent premature belt wear.

  • Inside diameter: 10.3 mm for precise shaft fitment
  • Outside diameter: 70 mm for optimal belt contact
  • Width of inner race: 54.8 mm for stable rotation
  • Width of outer race: 36.6 mm to support bearing integrity

Technical Details and Specifications

The NSK 70TB0803 timing belt idler features a carefully engineered design with a 10.3 mm inside diameter, allowing it to fit securely on the shaft within the valve train system. The 70 mm outside diameter provides the necessary surface area to guide the timing belt effectively. The inner race width of 54.8 mm and outer race width of 36.6 mm contribute to the component's durability and smooth operation under engine load. This idler is compatible with Acura Passport, Honda SLX, and Isuzu Trooper models, ensuring proper fitment and function in these vehicles.

Compatible Vehicles and Applications

  • Acura Passport engine timing belt system
  • Honda SLX valve train components
  • Isuzu Trooper timing belt tensioning

Common Issues Addressed by the NSK 70TB0803 Idler

  • Prevents timing belt slippage and misalignment
  • Reduces premature wear on timing belt components
  • Eliminates noise caused by worn or damaged idlers
  • Maintains proper tension for accurate valve timing
  • Supports engine performance and longevity

Installation Notes and Tips

When installing the NSK 70TB0803 engine timing belt idler, ensure the shaft and surrounding components are clean and free of debris. Proper alignment is critical to avoid belt damage. Use manufacturer-recommended torque specifications and verify belt tension after installation. It is advisable to inspect the entire timing belt system during replacement to identify any additional worn parts.

Quality Assurance and Warranty Information

NSK manufactures the 70TB0803 idler with precision engineering and high-quality materials to meet OEM standards. This part undergoes rigorous testing to ensure durability and reliable performance in Acura, Honda, and Isuzu vehicles. Warranty coverage details are provided by NSK and typically cover defects in material and workmanship under normal use conditions.

BrandNSK
Part Number70TB0803
Inside Diameter10.3
Outside Diameter70
Width, Inner Race54.8
Width, Outer Race36.6

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1997AcuraSLX3.2LV6N/A
1997HondaPassport3.2LV6N/A
1997IsuzuTrooper3.2LV6N/A
1996AcuraSLX3.2LV6N/A
1996HondaPassport3.2LV6N/A
1996IsuzuTrooper3.2LV6N/A
1995HondaPassport3.2LV6N/A
1995IsuzuTrooper3.2LV6N/A
1994HondaPassport3.2LV6N/A
1994IsuzuTrooper3.2LV6N/A
1993IsuzuTrooper3.2LV6N/A
1992IsuzuTrooper3.2LV6N/A

* 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:

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