This MABBCO cylinder head is for a supercharged GM Chevy Buick Olds 3.8 231, model years 1996-2005. This cylinder head is identifiable by its injector holes and its #4781 casting number.
MABBCO cylinder heads are cleaned, inspected, and machined on state of the art equipment. 3-angle valve jobs are performed on Sunnen seat and guide machines before being milled (i.e resurfaced) on Rottler or Sunnen equipment. All cylinder heads are vacuum checked for proper sealing and NEW premium valve stem seals are installed. MABBCO cylinder heads are sold outright (No Core Return Required).
Have questions, just call and ask, we are available Monday through Friday 8am - 5pm and Saturday 8am - noon, CST, at 1-800-639-2949.
Need a Head Gasket set? Head Gasket set available for an additional $185.00.
Engines are what we do, and all we do, and we have been doing it since 1964.