Application Works on Cummins ISX Engines Alternative to 3163530 (7MM) Jake Brake feeler gauge. The 7mm area is precision ground to +/- .0005 inch. Function A fast, easy and accurate way to check the valve clearance with this feeler gauge Getting the clearance adjusted is crucial not only for great performance but also to avoid any unwanted catastrophic failures or engine blows. Useful to keep engine noise down and keep your engine performing to its optimum level. How to Use .
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