COMP Cams Belt Drive Chevy SB Olds Rock

Marsoni

M251S

$863.14

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

COMP Cams Belt Drive Chevy SB Olds RockExtreme application belt for high rpm and high compression durability. Infinitely adjustable Vernier sprocket for absolute timing accuracy. Unique belt idler system reduces flap throughout rpm range. Designed to absorb crankshaft harmonics to guard against performance robbing valve train instability. Utilizes a unique Camshaft thrust adjustment system without shims. Includes double lip Seals for long life and maximum crankcase vacuum. Ideal for

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I was looking for this exact product but didn’t know it! We recently moved into a new home and had zero window treatments so needless to say I wanted something quick, affordable and not vinyl WalMart blinds. We are happy with our purchase and would highly recommend to others. Some complain of the adhesive not sticking- make sure to clean the window wells/walls etc prior to installing these. If the surface is free of dirt/grease there will be no issues with them staying put.

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Reviewed in the United States on October 14, 2025