OEM Ski‑Doo Rotax Labyrinth Seal 420‑8317‑50 — Vintage TNT Nordic Olympic
Use this product description: Original OEM labyrinth seal for Rotax‑powered Ski‑Doo engines. Correct spec part number 420‑8317‑50, designed to control crankcase gas flow and reduce oil migration for stable compression and clean scavenging. Ideal for vintage TNT, Nordic, and Olympic restorations; tight tolerance fit, period‑correct finish.
- Part: Labyrinth seal (Rotax engine)
- Part number: 420‑8317‑50
- Condition: OEM, clean and true
Inventory: SP‑2 • SKU‑27 or SKU‑63 • Photo: PIC‑1976‑ROTEX
Focus keyphrase: Rotax labyrinth seal
Meta description: OEM Rotax/Ski‑Doo labyrinth seal 420‑8317‑50. Restores proper crankcase sealing on vintage TNT/Nordic/Olympic sleds. SP‑2, SKU‑27 or 63, PIC‑1976‑ROTEX.