Segmentation by type classifies fan clutches into friction‑disc, viscous, electromagnetic, and hydraulic variants. Friction‑disc clutches, the most established technology, retain the largest share (approximately 45 %) due to their low upfront cost and proven durability across a broad temperature range, though they exhibit limited slip modulation. Viscous clutches, representing roughly 30 % of deployments, employ shear‑thickening fluid to achieve smoother torque transition, appealing to manufacturers targeting emissions‑related fuel‑saving targets. Electromagnetic clutches, with a 15 % penetration, enable rapid on‑off control and integration with electronic engine management systems, but their higher component cost restricts adoption to premium or hybrid power‑train applications. Hydraulic clutches, occupying the remaining 10 %, are favored in heavy‑duty contexts where precise torque control under high‑load conditions is essential, despite the added complexity of fluid circuits. Each type’s market contribution reflects trade‑offs among performance, cost, and integration complexity within the broader Fan Clutches for Commercial Vehicles market.