1/12 1/10 F1 Geardiff Sleeve 4x6x3 Arrowmax AM-931020  [AM-931020]

4x6x3 Replacement Sleeve for Differential Housings

The Arrowmax AM-931020 is a 4x6x3 bushing intended as an RC-scale replacement sleeve for pan car geardiff and related differential assemblies used in 1/12, 1/10 and F1 platforms. It creates a controlled bearing surface to limit shaft runout and help maintain correct gear mesh, with no implication of full-size vehicle application.

To install, verify the housing bore and shaft correspond to the 4x6x3 measurement, clean mating surfaces thoroughly, and press the sleeve flush into place. Apply minimal lubricant during bedding in and recheck axial and radial clearance to confirm correct fitment.

During maintenance and setup work, the AM-931020 is useful for restoring tightness in worn geardiff units and for subtle backlash adjustments. Check the sleeve regularly and replace it if you find ovaling or notable clearance that compromises gear engagement.