Description
Kibblewhite KPMI, intake valve guide. Manganese. STD
17-23 M8
Maganese bronze. Standard size: 0.4750″ O.D. (12.07mm); .2347″ I.D. (5.96mm); 1.655″ OAL (42.04mm). Manganese bronze is softer and less durable then C630 bearing bronze but will allow a lower cost and reaming to size is quick and easy and finish can be done with simple tools like a ball hone and an electric drill. Rapid heat transfer and good lubricity. Note: Special Manganese reamers & hones are available.
