Compatible with Stihl BR500, BR550, BR600 and BR700 4-MIX backpack blowers. This crankshaft seal set replaces OEM part number 9639 003 1585 and includes two oil seals for complete crankshaft service. Ideal for repairing air leaks, restoring crankcase pressure and maintaining proper engine compression during rebuild or maintenance. Manufactured by Lil Red Barn for reliable fit and performance. Please verify model and part number before ordering.
- Fits BR 4-MIX Models Compatible with Stihl BR500, BR550, BR600 and BR700 4-MIX backpack blowers.
- Replaces OEM Part Number Replaces Stihl 9639 003 1585 crankshaft oil seals.
- 2 Seal Set Includes two crankshaft seals for complete replacement during engine service or rebuild.
- Ideal for Engine Repair Designed to restore proper crankcase sealing, prevent air leaks and maintain correct compression and engine performance.
- Durable Replacement Components Precision manufactured oil seals for proper fit and long service life in commercial and residential blower applications.