Order Number	OMC Water Pump Number
Chevy 4 and 6 inline OMC stern drive marine engine 153 CID 2.5L 181 CID 3.0L 250 CID 4.0L # 31350 (5 units) $7.79 OEM# 27-33956	Water pump gasket # 31350 Chevy 4 or 6 cylinder inline water pump gasket
For chevy V6 - V8 small block OMC stern drive marine engine 229 CID 3.8L 262 CID 4.3L 305 CID 5.0L 350 CID 5.7L # 30230 (5 units) $7.79 OEM# 27-35380	(Small Block Only) Water Pump Gasket # 30230 Chevy V 6 and V 8 Small Block Engine Water Pump Gasket
Chevy OMC stern drive V 6 and V 8 big block marine engine 409 CID 6.6 L 427 CID 6.9 L 454 CID 7.4 L # 32690 $4.79 OEM#  N/A	Large Block Chevy Water Pump # 32690 Large V 8 Chevy Engine Water Pump 409, 427 and 454 CID
Aftermarket OMC parts for Ford V 8 small block marine engine 302 CID 5.0 L 351 CID 5.8 L #31900 $7.79 OEM# 27-56880	V8 Small Block Water Pump Gasket # 31900 Ford Engine V8 Small Block Water Pump Gasket
Chevy OMC stern drive V 6 and V 8 big block marine engine 409 CID 6.6 L 427 CID 6.9 L 454 CID 7.4 L # 31770 (5 units) $7.79 OEM# 27-49110	GM 454 gasket # 31770 GM 454 cid water pump gasket
GM water pump mounting gasket # 31380 (5 units) $7.79 OEM# 27-34897	GM water pump mounting gasket # 31380 GM water pump mounting gasket

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