V8 Mercruiser manifold riser/elbow conversion kit
Comparison wet joint and dry joint manifold risers/elbows
Comparison of the water passages between dry and wet joint risers/elbows
Comparison of the water jackets between dry and wet joint manifolds
Comparison wet joint and dry joint risers/elbows
Comparison between new and old dry joint risers/elbows
Inexpensive Conversion Kit
for "Dry Joint" Manifolds and Risers
fits 2005-present Mercruiser Chevy GM V8
305 5.0LX 350 5.7LX  engines
replaces OEM numbers:
Mercruiser 865735A02 Dry Joint Manifolds
Mercruiser 864309T02 Dry Joint Risers (elbows)
Sterndrives, Alpha Gen II Inboards, MIE  
Mercruiser 305 350 V8 Manifold Conversion Kit 2005-present
506-1-660                                                                       $529.95
Dry-Joint Manifold (used in the conversion kit)
500-1-230                                                                       $149.95
Dry-Joint Riser/Elbow (used in the conversion kit)
530-1-148                                                                       $149.95
Dry-Joint Manifold to Head Gasket
510-9-003                                                  $7.50                             
Dry-Joint Manifold to Riser Gasket (restricted)
540-9-002                                                                        $7.50
Dry-Joint Manifold to Riser Gasket (open)
540-9-003                                                                        $7.50