- Total：{{ cartCount }}
-
Synchronizer Sleeve 3rd4th — Fits Fiat Citroën C510 Transmission PN 55195575
Description
Purpose-built 3rd/4th synchronizer sleeve for the C510 manual transmission, cross-referencing OE PN 55195575. Manufactured from case-hardening alloy steel with broached internal splines and precision-finished dog teeth and faces, it engages smoothly with the hub and gear cones, improving shift feel and durability. Produced to OE geometry and tolerances for a true drop-in replacement.
Specification
Dog/Spline Form: Dog teeth for sleeve engagement; internal spline torque drive
Material: SCM415 / SAE 8620 alloy case-hardening steel (or equivalent)
Heat Treatment: Carburized & quenched
Surface Hardness: HRC 58–62
Manufacturing: CNC turning; spline broaching; dog-tooth finishing & deburring; precision-ground bore & faces
-
Model：
