Home Shop Engine Top End Valves KPM Black Diamond Valves for Flathead Big Twins 1937-1948
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for Flathead Big Twins 1937-1948

Kibblewhite Black Diamond valves are CNC machined from one-piece forgings of EV8 stainless steel. The proprietary Black Diamond multi-stage process treats the shaft to a depth of 0.002” creating a hard, smooth and corrosion resistant surface that cannot flake crack or peel off. The valve tips feature welded-on stellite tips for improved resistance to the impact and abrasive wear of the rocker arms. All versions work with modern lead-free fuels.

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Valve by Kibblewhite Precision Machining; fits Flathead 74”-80” 1937-1948; intake/exhaust; length: 159.5 mm; stem: 9.4 mm
W&W# Picture net price* Available from warehouse Germany?
61-348 for Flathead Big Twins 1937-1948 head: 49 mm; replaces OEM 18072-37, and 18082-37 $48.29 each
in stock
61-349 for Flathead Big Twins 1937-1948 oversize; Over-/Undersize: +0.120 ”; head: 52 mm $48.29 each
in stock
* United States of America: Tax free shipping. Please check your local import fees.


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