Product Overview
Riser
Keep your engine compartment accessible and safe with the Sierra Riser, a robust cast iron exhaust elbow designed for Volvo Penta engines. This essential component ensures smooth exhaust flow, preventing back pressure and maximizing engine performance. Built from durable cast iron, the Riser withstands the harsh marine environment, providing long-lasting reliability and peace of mind on the water.
Key Features
- **Durable Cast Iron Construction:** Resists corrosion and wear for extended service life in saltwater environments.
- **Precision Fit:** Designed specifically for Volvo GM Small Block V8 305-350CU. IN. AQ and BB200, 205, 211, 231, 225, 260, 271, 290, 311, 500, 501, 570, 571, 572, ensuring a perfect match for compatible engines.
- **4" Inner Diameter:** Provides optimal exhaust flow, reducing back pressure and improving engine performance.
- **Direct Replacement:** Easily replaces worn or damaged risers, simplifying installation and minimizing downtime.
- **Enhanced Engine Performance:** By ensuring proper exhaust flow, the Riser helps maintain peak engine efficiency and power output.
- **Reliable Operation:** The Riser's robust design contributes to dependable engine operation and reduces the risk of exhaust-related issues.
- **Compatible with Sierra Manifold 18-1931-1:** Seamless integration with the Sierra Manifold (sold separately) for a complete exhaust system upgrade.
What's in the Box
- Exhaust Elbow (Riser)
- Mounting Bolts (Zinc 5/16-18 x 5 1/2 Grade)
- Washers (Sierra Part # 18-4236 - included with the manifold, not the riser itself, but important to call out the part number for clarity)
- Note: Exhaust Manifold Gasket (Sierra Part # 18-2917-1) is required for installation but sold separately.
Specifications
The Captain's Take
After years of battling saltwater corrosion on lesser exhaust components, I switched to the Sierra Riser and haven't looked back. Its heavy-duty cast iron construction is built to last, and the improved engine performance is noticeable. Knowing I have a reliable exhaust system gives me confidence every time I head out, and that's invaluable. I highly recommend the Sierra Riser to any captain who demands the best for their vessel.
