Crown Wheel & Pinion 12X47 (Long)

This Crown Wheel & Pinion Set (OEM # 5003939) is designed for Fiat tractors requiring robust differential performance. Featuring a 12:47 gear ratio (12 teeth on the pinion, 47 on the crown wheel), it delivers optimal torque multiplication for demanding tasks like plowing, tilling, or hauling. The "Long" variant indicates a specialized pinion shaft design, tailored to fit specific Fiat tractor differential housings. Crafted from heat-treated hardened steel, the set resists wear, pitting, and thermal stress, ensuring longevity in rugged environments. Precision-machined tooth profiles minimize noise and vibration, even under high loads, while maintaining smooth power delivery.

The OEM-grade construction guarantees exact compatibility with Fiat’s differential systems, ensuring factory-level performance and reliability. The hardened steel composition enhances resistance to mechanical fatigue, critical for tractors operating in muddy, uneven, or abrasive terrain. Ideal for repairs or overhauls, this 12X47 set restores drivetrain efficiency and reduces downtime. Applications include Fiat tractors used in agriculture, forestry, or construction, where durability and precision are paramount.

Rigorously tested to meet Fiat’s OEM specifications (part # 5003939), this set is trusted by technicians and farmers worldwide. Proper installation is key—ensure correct gear alignment, lubrication with high-quality EP-90 gear oil, and adherence to torque specifications. Follow the manufacturer’s break-in procedure (e.g., gradual load increase) to maximize lifespan.