In my words
Every pit box needs a Differential Seal Kit Replacement Kit Perf Trans sitting in it before it needs another set of tires.
A part that loosens under vibration is a part that fails at the worst moment, so thread-lock everything.
I do not hold inventory — the button sends you to the listing, and it carries the current price.
What Pro-Line says about it
- Pro-Line Racing Differential Seal Kit Replacement Kit: Perf Trans, PRO609208
Questions I get about this set
Does this fit my car?
The listing carries the full fitment table. Pro-Line lists fitment by platform rather than by year, so compare the part against your current one before the car is in pieces.
Aluminum or plastic?
Aluminum holds geometry and transfers the hit; plastic bends and comes back. On a rough outdoor track I take plastic in the front and aluminum in the back.
