4th Gear Pair (34T / 35T), F20L Transmission — Fits Alfa Romeo / Fiat Bipper / Fiat Doblo

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4th Gear Pair 34T 35T F20L Transmission — Fits Alfa Romeo Fiat Bipper Fiat Doblo

Description

Replacement 4th-gear pair engineered for the F20L 5-speed transmission, used on Alfa Romeo, Fiat Bipper, and Fiat Doblo (verify gearbox code and model year). Precision helical gears with case hardening provide high load capacity, smooth engagement, and low noise. Built to OE geometry and tolerances for a true drop-in service part.

Specification

Tooth Form: Helical

Tooth Count: 34T / 35T

Material: SCM415 / SAE 8620 alloy case-hardening steel (or equivalent)

Heat Treatment: Carburized & quenched

Surface Hardness: HRC 58–62

Manufacturing: CNC turning/milling, precision hobbing, dog-tooth finishing & deburring; precision-ground bore & faces