COMP Cams Camshaft Gm6.6L Duramax 258Xd

Marsoni

M251S

$457.10

Get it in 3 business days with 1 day shipping. Friday, May 29

COMP Cams Camshaft Gm6.6L Duramax 258XdMechanical Roller Designed for modified performance Applications (Exh., programmer, etc. upgrades) Good for limited towing. COMP Cams always recommends checking piston to valve clearance whenever installing a Camshaft. Modern engine design dictates a compact combustion chamber and tight clearances. Tolerance stack or Installation errors can result in interference and failure. COMP recommends . 080" intake and . 120" exhaust minimum piston to valve

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If your dog pulls on these (and why wouldn’t he?), the rope immediately comes out. Turns out they just fuse the ends of the nylon rope together, which is no match for a dog playing tug. Any dog, any level of pulling will dismantle these. We’ve managed to reinsert the rope to a couple of these and KNOT it, which gives you a shorter rope but a toy that can withstand some play. But if I had wanted a DIY toy, I’d have used the balls and rope I already own.

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Reviewed in the United States on December 11, 2025