420254882 Intake Exhaust Valve Guide for Sea-Doo Speedster 310 1503 2008

Intake or Exhaust Valve Guide for Sea-Doo

This intake or exhaust valve guide is a replacement engine component that keeps the valve stem aligned as it opens and closes, cross-referenced to OEM part number 420254882.

Overview

This intake or exhaust valve guide for Sea-Doo is a precision-machined sleeve pressed into the cylinder head to keep valve stems moving in a straight line. Proper valve guide clearance is critical for sealing, compression, and overall engine performance in the Sea-Doo Speedster 310 with the 1503 engine. Whether you are refreshing a top end or rebuilding a cylinder head, this valve guide restores factory alignment for both intake and exhaust valves.

Built For Performance

• Precision-machined bore for accurate valve stem clearance
• Durable construction to resist heat and friction in marine engines
• Works for both intake and exhaust valve positions
• Cross-referenced to OEM part number 420254882 for direct fitment
• Helps maintain proper valve sealing and compression
• Suitable for cylinder head rebuild and refresh work

Fits These Machines

• for Sea-Doo Speedster 310 with 1503 engine (2008)

On-The-Job Use

• Cylinder head rebuilds and valve jobs
• Restoring top end performance on the Sea-Doo Speedster 310
• Replacing worn guides that cause oil consumption or poor sealing
• Engine refresh during seasonal maintenance

Specs At A Glance

Good To Know

Q: How many valve guides does my engine need? A: The 1503 engine uses multiple valve guides across its cylinder head, so check your service manual for the exact count. Order the quantity needed for your specific rebuild.

Q: Can I install this valve guide myself? A: Valve guide installation typically requires pressing and reaming to achieve correct clearance, so professional machine shop work is recommended. Improper installation can lead to valve sticking or oil burning.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.