VAC offers High Performance Valve Guides for all BMW models (both Standard and Oversized ODs). These M10 / M30 guides are born from superior metallurgy than the original valve guides and offer improved wear characteristics under the stresses of high performance use. They also work great as stock replacements and last a very long time. *Please be sure to check the valve guide bores in the cylinder head prior to ordering oversized guides and include it in the box above.
VAC Tech Tip Make sure you replace guides on all M10 or M30 cylinder heads when refreshing the head. Many times we have seen “rebuilt” heads from shops that did not have guides replaced, this is shortchanging the customer.
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