Pan Car Gear Diff O-ring Pack 4.5X1 - Arrowmax AM-931013  [AM-931013]

Compact O-ring set for pan car differentials

This Arrowmax AM-931013 Oring 4.5X1 (10) pack contains ten 4.5X1 O-rings intended as replacement seals for RC pan car gear differential assemblies. The set is sized for routine service, seal refreshes, and small preload tweaks where stable sealing or spacing inside the diff stack is needed.

These rings are aimed at pan car gear diffs commonly found in 1/12 and 1/10 scale cars, particularly in low-profile or pan-style diff housings. They function as seals or thin spacers within the diff stack to help retain fluid and keep gear mesh consistent under load.

Installation guidance: check gears, shafts and groove edges for burrs before fitting, avoid overstretching the O-ring during installation, and fit rings so they seat evenly in their groove. Replace rings as matched sets to preserve consistent sealing and balance between sides of the diff.

Tuning note: installing new O-rings can stop small leaks and help keep diff fluid positioned under lateral forces, which in turn can subtly change traction and corner feel on pan car chassis.