
Sierra 18-1973 Marine Manifold Elbow for Mercruiser Stern
Drive Features:
- Durable construction
- Non-corrosive
- Hard-wearing parts and components
- Use with:
- 18-2819: Exhaust Elbow Gasket
- 18-8508: Exhaust Manifold Mounting Kit
- Replaces:
- Osco 5538
- Barr MC-20-55538
- Mallory 9-40553
- Mercury Marine 55538A2












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