1/12 and 1/10 Pan Car O-ring Set 4.5X1 - Arrowmax AM-931013  [AM-931013]

Precision 4.5X1 O-ring kit for pan diffs

Arrowmax AM-931013 Oring 4.5X1 (10) is a ten-piece replacement kit designed for pan car gear differential units in RC models. The rings are intended for scheduled maintenance, leak control, and minor adjustments to diff spacing where a snug seal matters.

Fitment targets pan car gear diffs in 1/12 and 1/10 scale machines, especially where compact diff housings are used. These O-rings act as seals or thin shims to hold fluid and stabilise gear mesh under running conditions.

Fitment advice: clean the diff internals and check for burrs before fitting, avoid excessive stretching when placing a ring, and ensure the ring sits uniformly in its groove. Change rings in pairs or full sets to maintain even sealing performance across the diff.

Practical note: fresh O-rings reduce small seepage and help keep oil in the correct position during cornering, which can influence how the car transfers power mid-corner on a pan chassis.