Crankshaft Balancer and Sprocket Installer J-41665-A
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Crankshaft Balancer and Sprocket Installer J-41665-A

This tool is used with the draw bolt and nut from tool J-41478. If you want to buy just the bolt and nut, the part numbers are 280055 and 90592A034 . When used on LS7 engines, EN-47812 is required instead of 280055

Includes J-41665-1 and J-41665-2

Applications: CTS-V, Corvette ZR1, Camaro ZL3

2009 supercharged 6.2L V8 engines use a keyway to locate the balancer, and the timing sprocket and balancer must be installed over this keyway. J-41665-A is slotted to fit over this keyway, and is used with the forcing screw and hardware from either J-41478 Front Seal Installer or EN-47812 Front Seal Installer Bolt to seat the lower timing gear sprocket and then the engine balancer. Both are press-fit, and must be fully seated to prevent damage to other engine components, such as the oil pump. J-41665-A will back-service all small-block V8 engines to 1997 (4.8L, 5.3L, 5.7L, 6.0L, 7.0L) with or without the keyed balancer.

Auto Inventory: B2


  • Item #: J-41665-A
  • Manufacturer: SPX/Bosch (OTC Rotunda Kent-Moore Miller)
  • Condition: New

Crankshaft Balancer and Sprocket Installer J-41665-A

Price: $86.09
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