BMW M3 E30 - M5 E28 - M5 E34 - M635 24V

Bronze valve guides kit for BMW M3 E30 S14B23-S14B25, M5 E28 E34 M635 engine S38.

The valve guides of SUPERTECH manganese bronze, which is an alloy of manganese and zinc, as well as aluminum to give further strength to the material.
Manganese bronze is a high strength alloy that is used for parts that are subjected to a high stress load.
These valve guides have a high resistance to wear and are designed for a higher coefficient of thermal transfer, highly recommended for all types of preparation of high performance engines.
*Complete set of intake and exhaust.

Engines:
S14B23, S14B25, S38B35, S38B36, S38B38.
Measure: 
OD - 12,03mm
Height: 45,00mm