In order to tighten the bolts of a crankpin bearing to the exact tension specified by the engine manufacturer, you should use a/an __________.

Correct Answer: Option B — torque wrench

Torque wrenches are precision instruments required to apply specific clamping forces to critical fasteners like crankpin bolts. Proper torque, as specified by engine manufacturers under 46 CFR Subchapter F, prevents bolt fatigue, elongation, or failure, ensuring the mechanical integrity of reciprocating engine components during operation.