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6L Duramax LLY/LBZ/LMM
featuring 4-ply heat-resistant internal fibers that provide strength against high-pressures and temperatures
You will notice a better operating turbo when paired with a new Billet unison ring
7L Cummins performance engine builds above 700 hp and 1
**We Highly Recommend adding these products for best results:**
2003-2018 Cummins 5.9L/6.7L Fluidampr Competition Series Harmonic Damper (980301) universal 6L Duramax LLY/LBZ/LMMUsing only three parts (a laser welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two), SFI approved Fluidampr harmonic dampers can control all crankshaft vibration not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure.
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