Mercury – Quicksilver Exhaust Elbow | Exhaust System Part | In-Line 6-Cylinder MerCruiser Engines | 76351A04Mercury Quicksilver Exhaust Elbow Exhaust System Part In Line 6 Cylinder MerCruiser Engines 76351A04 Overview If youre bringing an older MerCruiser back to life, this is one of those parts that makes a real difference. The Mercury Marine 76351A04 Quicksilver Exhaust Elbow is built to factory specs for MerCruiser in line six cylinder engines, including the 140 (19661982), 470 (19761977), 165, and 200 models. Its tough, reliable, and designed to handle