KPMI, prowadnica zaworu wydechowego. Mangan. +.001″

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. Note: Standard non-oversize dimensions (for reference only) are 0.4750″ O.D. (12.07mm); 0.2342″ I.D. (5.95mm); 1.655″ OAL (42.04mm).