This GSC Power Division manganese bronze exhaust valve guide is made for the Nissan TB48DE engine and supplied as a single replacement with a +0.003 inch oversize outer diameter. It provides a manufacturer-specified fit for the named engine application, offering a direct replacement guide manufactured from manganese bronze as listed in the product description.
GSC P-D Nissan TB48DE Manganese Bronze Exhaust Valve Guide +.003in Oversize OD - Single