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- Spark Plug for U. S. MARINE 5.0L 225 hp - 305 cid, 5.7L 260 hp, 350 cid - 7.4L$5.72Product Code: 1030540
- Spark Plug for VOLVO-PENTA SX Cobra 5.7L GL/GL 2 BBL/GS/GS 4, 7.4L GL 4 BBL$5.72Product Code: 1030542
- Spark Plug for MERCRUISER GM Big Block 330 (454 cid), 340, 400, 454, 7.4L, 8.2L$5.72Product Code: 1030543
- Spark Plug for VOLVO-PENTA AQ260, AQ271, AQ290, AQ311, AQ430, AQ500 AQ501A AQ531$5.72Product Code: 1030544
- Spark Plug for MARINE POWER GM 262 cid V6, 305, 307, 350, 454, 502, 540 cid V8$5.72Product Code: 1030546
- Spark Plug for VOLVO-PENTA AQ570, AQ571, AQ572, AQ740, BB225, BB260, 305 cid$5.72Product Code: 1030547