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Mercury
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Mercury Marine [Updated: Apr. 10, 2026]
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Sterndrive
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Engines - Gas
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7.4L (454 CU IN) V8 GM
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400 TRS GM 454 V-8
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1980-1986 [4179554 THRU 0B457644] - Cat.# 90-86187
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Cylinder Head (370/400/440-S/N-5670298 & Below)
Cylinder Head (370/400/440-S/N-5670298 & Below)
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