Description
PTO or MAG Crankshaft Seal for 2004-2010 Ski-Doo 550 and 600 Models
Ski-Doo models can use this seal on either the PTO or MAG side, depending on the engine configuration. Compare the seal dimensions and replacement part number with your original component before purchase.
Includes the Following Part
- Crankshaft Seal, 35x72x7
Replacement Part Numbers
- Replaces OEM #290831952 for applicable MAG-side installations
- Replaces OEM #420831950, #420831951, and #420831952 for applicable PTO-side installations
Confirm the Seal Position Before Installation
This listing includes one crankshaft seal. Therefore, verify whether your model uses it on the PTO or MAG side. Also, compare the 35x72x7 dimensions and applicable part number before removing the original seal.
Inspect the crankshaft surface and seal bore for wear or damage during disassembly. Then, install the seal in the correct direction and at the proper depth according to the service information for your engine.
Ski-Doo Parts and Fitment Support
Browse additional Ski-Doo 550 Fan maintenance parts, or visit the REV6 Ski-Doo parts catalog to find related engine components.
Parts Warranty
This crankshaft seal carries a 1-year REV6 parts warranty. Contact REV6 with your year, model, engine type, seal position, and original part number if you need help checking fitment.














