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Dinan Underdrive Pulley Kits

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Dinan underdrive pulley kits are designed to increase power by reducing the parasitic drag on your engine from spinning the alternator, water pump, and AC compressor. They accomplish this by slowing down the speed of these accessory drives that rob your engine's power. Dinan has done extensive hot-weather testing, so you can be assured that your engine is safe. The Dinan underdrive pulley is made of aircraft-quality 6061 alloy, anodized black, and engraved. Plus, they do not modify your harmonic damper as some underdrive pulley kits do, which can be harmful to your engine.

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Pulley Kits, Underdrive Pulley Kits, Serpentine, Performance Ratio, Crankshaft Pulley, Aluminum, Black, Belt, BMW, 4.0L, Each

Part Number: DNN-D560-0004

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

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Estimated Ship Date: Dec 11, 2025 if ordered today

This product may not be eligible for select promotional offers

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This is a custom order part. You can order this part by Contacting Us.