Arrowmax AM-931013 Oring 4.5X1 (10) O-ring pack for pan car gear diffs  [AM-931013]

O-ring pack for pan car diffs

This Arrowmax AM-931013 Oring 4.5X1 (10) is a small replacement pack of O-rings intended for RC pan car gear differential assemblies. The set contains 10 pcs labelled for size 4.5X1, and is designed for routine maintenance, seal replacement, and light tuning where diff sealing or slight preload adjustment is required.

Compatibility is focused on pan car gear diffs commonly used in 1/12 and 1/10 scale setups, especially in Pancar or low-profile diff housings. The O-rings serve as seals or spacers inside the diff stack to retain fluid or keep mesh tolerances stable during running.

Installation notes: inspect diff surfaces and shafts for nicks before fitting, install the O-ring without excessive stretching, and ensure it seats evenly in its groove. Replace O-rings in sets to maintain consistent sealing performance across both sides of the diff.

Practical tuning tip: swapping to a fresh O-ring can remove minor leaks and help maintain diff fluid position under lateral loads, which can subtly affect traction characteristics on pan car setups.