290260723 290260728 420260728 420260723 RAVE Valve Rebuild Kit for Sea-Doo GSX GTX SPX XP Challenger Speedster | JLM Marine

RAVE Valve Rebuild Kit – Fits Sea-Doo 787/800 Carbureted Models (GSX, GTX, SPX, XP, Challenger, Speedster)

This comprehensive RAVE valve rebuild kit is designed for Sea-Doo 787/800 carbureted personal watercraft and sport boats. It provides all essential components to restore proper exhaust valve operation, ensuring optimal power delivery and performance across GSX, GTX, SPX, XP (787 engine), Challenger, and Speedster models from the mid-1990s through 1999.

This kit directly replaces Sea-Doo OEM part numbers 290260723, 290260728, 420260728, and 420260723, consolidating multiple factory part numbers into one complete repair solution.

• Twin Pack Configuration: Includes components for both RAVE valves (left and right cylinders)
• Complete Seal Refresh: Replaces all critical wear items—bellows, O-rings, and gaskets
• Carbureted 787/800 Fitment: Specifically for 787cc engines; not compatible with 720cc XP models

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 complete RAVE valve rebuild kit includes:

• 2× RAVE Valve Bellows (replaces 420-260-723, 290-260-723, 290260728, 420260728)
• 2× Shaft O-Rings (replaces 420-430-110, 290-430-110, 290-931-765)
• 2× Gaskets (replaces 420-931-540, 290-931-540)

Installation Guide

1. Preparation: Disconnect the battery and allow the engine to cool completely. Gather a torque wrench, socket set, and clean shop towels.
2. Access the RAVE Valves: Remove the exhaust manifold covers on both sides of the engine to expose the RAVE valve assemblies.
3. Remove Old Components: Carefully extract each RAVE valve shaft, noting the orientation. Remove and discard the old bellows, O-rings, and gaskets.
4. Clean Mating Surfaces: Thoroughly clean all mounting surfaces, valve bores, and shafts with a degreaser and lint-free cloth. Inspect for scoring or damage.
5. Install New Seals: Lubricate the new shaft O-rings with a light marine grease and slide them onto each valve shaft.
6. Fit New Bellows: Install the new RAVE valve bellows onto each shaft, ensuring proper seating in the valve body grooves.
7. Position New Gaskets: Place the new gaskets on the clean mounting surfaces, aligning all bolt holes precisely.
8. Reinstall Valve Assemblies: Insert each RAVE valve shaft back into its bore, ensuring the bellows and O-rings seat correctly without twisting.
9. Secure Covers: Reinstall the exhaust manifold covers and torque all fasteners to Sea-Doo specifications (typically 8–10 ft-lbs; consult your service manual).
10. Reconnect Battery: Restore electrical connections and perform a visual inspection for proper fitment.
11. Test Run: Start the engine and allow it to idle, then gradually increase RPM while listening for abnormal sounds or exhaust leaks.
12. Final Check: After a short test ride, re-inspect all fasteners and check for any signs of leakage around the RAVE valve covers.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Sea-Doo?
A: Verify that your watercraft has a 787cc (800cc) carbureted engine and matches one of the models and years listed in the compatibility table. XP models with the 720cc engine are not compatible. Cross-check your existing part numbers against those listed in the Part Number Cross-Reference section.

Q: What are the signs that my RAVE valves need rebuilding?
A: Common symptoms include loss of top-end power, poor throttle response, excessive smoke at high RPM, or visible exhaust leaks around the valve covers. Worn bellows can cause air leaks that affect performance and potentially damage the engine.

Q: How often should I replace RAVE valve seals?
A: Sea-Doo recommends inspecting RAVE valves every 100 hours of operation or annually. Replace bellows, O-rings, and gaskets if you notice cracking, hardening, or leakage, or as preventive maintenance every 2–3 seasons depending on usage.

Q: Can I reuse the old gaskets and O-rings if they look okay?
A: No. Even if seals appear intact, they lose elasticity and sealing capability over time. Always install all new components from this kit to prevent exhaust leaks and ensure proper RAVE valve function.

Q: What's the difference between this aftermarket kit and the OEM parts?
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.