Flywheel Ring Gear Cummins 3908546 | J908546, AK-3908546, WA3908546, M-3908546

High-Performance Flywheel Ring Gear for Cummins Engines

The Flywheel Ring Gear 3908546 is a critical component designed to ensure smooth, reliable, and consistent engine starts for your Cummins diesel engines. Engineered from high-strength carbon steel, this ring gear is built to withstand the intense rotational forces and heat generated during starter engagement, preventing premature wear and tooth damage.

Key Features & Specifications

• Teeth Count: 138 teeth for precise and seamless starter motor engagement.
• Thickness: 16 mm (0.610 inches) for robust durability.
• Outer Diameter: 17 inches.
• Material: Premium-grade wear-resistant steel to maximize service life.
• Direct Replacement: Manufactured to meet or exceed standard specifications for a perfect fit.

Engine Compatibility

This flywheel ring gear is highly versatile and compatible with a wide range of Cummins B-Series, C-Series, and QSB/ISB/ISC/ISL engines, including:

• Cummins 4BT 3.9 / 6BT 5.9
• Cummins 6CT 8.3 / ISC 8.3 / QSC 8.3
• Cummins ISB 4.5 / ISB 6.7 / QSB 4.5 / QSB 6.7
• Cummins ISL 8.9 / QSL 8.9

Please verify your original part number or consult your engine manual prior to ordering to ensure exact fitment.