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Billet Crankshaft Pulley for 6.5 diesels w/serp belt systems (6 groove). See video below.
This pulley is 2.5 pounds lighter and made from a billet chunk of aluminum and finally does away with the problems the factory pulleys have. It is anodized to protect it. Will fit all 6.5 diesels with the serp belt system with 6 groove belt as found on all 1992-2000 GM trucks and vans. Will also fit civilian Hummer with 6 groove pulleys.
This is a lifetime part you will not need to change it ever again.
If you have had a 6.5 diesel for anytime you know all about the factory pulley problems, this will fix it for good.
The stock pulleys are known to crack/separate and fail quite often. The stock pulley after it has failed can sound like a rod knock. Be sure to inspect you old pulley every oil change if you see any sign of the rubber cracking or dry rot or if you can move the outside ring independent of the hub then replace it immediately!
If you need new bolts they are listed here
Notice. The pulley shown in video is the first version pulley made years ago. The pulley now has a solid front and only in black color like the picture above.