Specifications

The FUL15399 Mainshaft Gear is a high-strength transmission gear designed for heavy-duty trucks requiring durable and efficient power transfer. As part of the mainshaft assembly, it plays a crucial role in maintaining proper gear ratios, supporting torque loads, and ensuring smooth shifting throughout the driveline. Manufactured from hardened steel and machined to exact specifications, this gear provides long-term durability and reliability under continuous operation. It is ideal for fleet maintenance, overhaul projects, and restoring worn or damaged transmission components to OEM-level performance.

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