D4-6
This will fit all MERCURY V 150 5866777 thru 6042945 , V 150 XR2 5866777 thru 6042945 Early Style Complete Power Head Gasket Kit WSM 500-224 OEM# 27-79583A81

POWERHEAD GASKET SET | GLM Part Number: 39340; Sierra Part Number: 18-4315; Mercury Part Number: 27-79583A81