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Disassembly: Drain all gear oil from the lower unit
AQ125B 125 4-Stroke 841161 Volvo Penta AQ131A
318335 2 gasket sets required per engine V4 Crossflow 85 2-Stroke 1979–1980
O-rings and diaphragms as applicable
Ensure the engine is cool and place an oil drain pan beneath the existing filter
27-18272 Exhaust Manifold Riser Gasket for Mercruiser 3.7L | JLM Marine family-yamaha-f115la0611 Disassembly: Drain all gear oilExhaust Manifold Riser Gasket for MerCruiser 3. 7L Replaces 27 18272 This Exhaust Manifold Riser Gasket is designed for MerCruiser 4 cylinder 3. 7L (224 cid) marine engines, including 165, 170, 180, and 190 HP models from 19851989. It provides a reliable seal between the exhaust manifold and riser elbow to prevent exhaust leaks and maintain engine performance. Direct replacement for MerCruiser OEM #27 18272 and #27 97863, as well as Sierra #18 0881.
