Our multi bolt reluctor upgrade is a must for todays modern, high rpm, high horsepower Duramax's. This solution is a direct byproduct of our experiences with our own competition vehicles. Even with Loctite and tack welds we have experience reluctor hardware failure or loosening. The key to this design is our unique hardware selection and hole locations that lock the flats of the bolts against the crankshaft gear, eliminating any chance of bolt rotation. See the picture below.
Oil pump drive gear and reluctor come drilled, fitted and assembled, does not include crank gear that drives cam gear.
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