857618 Exhaust Elbow Riser Gasket for Volvo Penta AQ200 AQ225 AQ260 AQ271 AQ290 AQ311 | JLM Marine

857618 Exhaust Elbow Riser Gasket for Volvo Penta AQ200 AQ225 AQ260 AQ271 AQ290 AQ311 | JLM Marine

This exhaust elbow riser gasket is engineered for Volvo Penta V6 and V8 marine engines with a 3-3/4" exhaust outlet, including the AQ200, AQ225, AQ260, AQ271, AQ290, and AQ311 series, as well as a broad range of displacements from 4.3L to 8.1L. It ensures a reliable seal between the exhaust elbow and riser, preventing dangerous exhaust leaks and water intrusion.

Direct replacement for: Volvo Penta #835908, #856039, #857618, and Quicksilver #803356. This aftermarket gasket is built to OEM specifications, providing a dependable solution for routine maintenance or complete exhaust system overhauls.

• Package includes 2 exhaust elbow riser gaskets (pair)
• Compatible with multiple Volvo Penta V6 and V8 engine families spanning decades of production
• Critical seal component for preventing exhaust leaks and maintaining engine performance

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands:

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

This package includes the following components:

• 2 × Exhaust Elbow Riser Gasket (pair)

Installation Guide

1. Disconnect the battery and allow the engine to cool completely before beginning work.
2. Remove the exhaust elbow assembly by loosening the mounting bolts and carefully lifting it away from the riser.
3. Inspect the mating surfaces on both the elbow and riser for corrosion, pitting, or damage; clean thoroughly with a gasket scraper and solvent.
4. Remove all remnants of the old gasket material from both surfaces to ensure a proper seal.
5. Position the new exhaust elbow riser gasket onto the riser, aligning all mounting holes.
6. Carefully lower the exhaust elbow back into place, ensuring the gasket remains properly seated.
7. Hand-thread all mounting bolts to prevent cross-threading, then tighten in a crisscross pattern to the manufacturer's specified torque.
8. Double-check all connections and ensure no foreign material is trapped between surfaces.
9. Reconnect the battery and start the engine, allowing it to reach operating temperature.
10. Inspect the elbow-to-riser joint for any signs of exhaust or water leaks while the engine is running.
11. If leaks are detected, shut down immediately, allow to cool, and re-torque fasteners or inspect gasket alignment.
12. Perform a final visual inspection after a short test run to confirm the seal is holding under normal operating conditions.

Troubleshooting & FAQ

Q: How do I confirm this gasket fits my Volvo Penta engine?
A: Verify that your engine is a V6 or V8 model with a 3-3/4" exhaust outlet and that your model number appears in the compatibility table above. Cross-reference your existing gasket or OEM part number (835908, 856039, or 857618) to ensure a proper match.

Q: How often should I replace the exhaust elbow riser gasket?
A: Replace this gasket whenever you service or remove the exhaust elbow, or if you notice exhaust leaks, steam, or water intrusion around the joint. Many marine technicians recommend inspection every 2–3 years or during routine cooling system maintenance.

Q: What are common signs that this gasket is failing?
A: Watch for visible exhaust smoke or steam escaping from the elbow-to-riser joint, water in the bilge near the exhaust, or a hissing sound during engine operation. Deteriorated gaskets can also cause overheating or reduced engine performance.

Q: Can I reuse the old gasket if it looks intact?
A: No. Exhaust gaskets are designed for one-time use and compress permanently during installation. Reusing an old gasket will likely result in leaks and potential engine damage.

Q: Is this an OEM or aftermarket part?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.