00:00Water shutters burn out fast
00:02Engine overheats, rubber melts, water backs into cylinders
00:06Today we settle Mare Cruiser exhaust flappers vs 14348A2 water shutters, which lasts, and I track down best deals on
00:14market so engine stays safe without empty wallet
00:17First up, Dual Pack 807166A1 kit for post-1996 V6 and V8 engines
00:24Best feature is molded synthetic rubber compound that handles dry start exhaust heat way better than old stock parts
00:31Only $8.86 with 4.6 stars across thousands of sales
00:36Cheap insurance to keep in tool drawer for fast swap out
00:40Next option, 807166A1 kit with included mounting grommets
00:45Covers standard Mare Cruiser stern drives from 4.3L up to 8.2L
00:50Having fresh grommets prepack saves 30-minute fight with hardened, brittle old bushings inside Y-pipe
00:56Runs $11.08, rock-solid 4.4 rating, dead simple install
01:02Third is OEM spec 807166A1 replacement for post-1998 4.3L through 8.2L blocks
01:10Best part, internal metal core is beefier, resists curling when exhaust runs hot during long lake pulls
01:17Costs $22.04 with 4.6 stars
01:21Pick this one if you run offshore and need zero risk of melted shutter drop into exhaust elbow
01:26Fourth pick, Part 60930 with grommets, matching Sierra 18-2727 specs for smaller engines from 2.5L to 6.2L
01:37High-grade pivot pins lock tight, stopping shutter flutter rattle at idle
01:42Unbeatable price at $6.84, perfect 5-star rating
01:47Perfect fit for inline 4 or standard small blocks
01:51Final contender, 807166A3 pair, cross-referencing classic 14348 series and Sierra 18-2732 for 1982-1998 V6 and V8 models
02:03Built explicitly for vintage one-piece exhaust designs where clearance is tight
02:08Priced at $10.58 with flawless 5-star score
02:13Best durability upgrade for older carburetor rigs
02:18Part links down in description below
02:20Hit like if this saved boat motor, subscribe for more wrenching tests
02:24Best
