Description

Description

Sierra MerCruiser 7.4 454 502 Big Block V8 Center Riser Exhaust Manifold & Riser Kit

2x Manifold 18-1957-1 SS to 18-1957-2

Replaces
• Osco: 9011A
• GLM: 51240
• MerCruiser: 89011A8 , 807078T08 , 807078T10 , 89011
• Barr marine: MC-1-89011

2x Riser Elbow 18-1976-2

Replaces:
• MerCruiser: 44354A3 & 807914A1 & 807988Q03
• GLM: 51140
• Osco: 4354
• Barr Marine: MC-20-44354
• Aqua Power: 5706
• Old Sierra Number: 18-1976-1

Kit Contains:
• 2x Exhaust Manifold
• 2x Manifold to Riser/Elbow Gasket
• 2x Manifold to Head Gasket
• 2x Drain Elbow Plug
• 2x 4″ Riser Elbow
• 8x Riser Bolts
• Various Plugs and Fittings

Specs