WAI 6490N Starter

Reliable Starter for Buick, Chevrolet, GMC, Isuzu, and Oldsmobile Vehicles

The WAI 6490N starter is engineered to provide dependable starting power for select Buick, Chevrolet, GMC, Isuzu, and Oldsmobile models. Designed with a permanent magnet gear reduction system, this starter ensures efficient engine cranking and consistent performance.

• Permanent magnet gear reduction design for improved torque
• Clockwise (right) starter rotation compatible with specific vehicle models
• 11-tooth pinion gear for precise engagement
• Flange mounting type for secure installation
• Power rating of 1.6 kW suitable for medium-duty applications

Technical Details and Design Features

The WAI 6490N starter features a permanent magnet gear reduction design that enhances torque output while reducing overall size and weight. This design improves starting efficiency and durability. The starter rotates clockwise (right), matching the specifications required by the Delco family of starters. With an 11-tooth pinion gear, it ensures proper meshing with the engine flywheel for smooth engagement. The flange mounting type provides a stable and secure fitment, minimizing vibration and wear during operation. Rated at 1.6 kW, this starter delivers reliable power for starting engines in a range of vehicles.

Compatible Vehicles and Applications

This starter is compatible with several GM and Isuzu models, including:

• Buick Ascender
• Chevrolet Trailblazer and Trailblazer EXT
• GMC Envoy, Envoy XL, and Rainier
• Isuzu Ascender and Bravada
• Oldsmobile models within the Delco starter family specifications

Using the WAI 6490N starter helps address common starting issues such as slow cranking, failure to engage, and intermittent starting problems in these vehicles.

Common Issues Addressed by the WAI 6490N Starter

• Engine slow to crank or no crank condition
• Starter pinion failing to engage the flywheel
• Intermittent starting failures
• Excessive starter noise due to gear wear
• Starter motor overheating or insufficient power output

Installation Notes and Tips

Ensure the starter rotation matches the vehicle’s requirements; the WAI 6490N rotates clockwise (right). Verify the flange mounting type aligns with the vehicle’s mounting points for a secure fit. Inspect the flywheel teeth for wear before installation to prevent premature starter damage. Proper torque specifications should be followed when securing the starter to avoid mounting issues.

Quality Assurance and Warranty

WAI starters are manufactured to meet industry standards for durability and performance. The 6490N starter undergoes rigorous testing to ensure reliable operation in demanding conditions. Please refer to WAI’s official warranty policy for coverage details on this starter model.