*OEM 1EA HONDA INTAKE VALVE GUIDE CT90 ATC90 ST90 CL90 SL90 CM91 US90 (57S)
 
12023-035-405 12021-035-811
 
THIS INTAKE VALVE GUIDE MUST BE PRESSED INTO YOU HEAD AND THEN REAMED OUT TO THE CORRECT ID. 5.5MM
 
DO NOT USE THE OUTER SPRING SEAT WASHER WITH THIS GUIDE