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Description
25 173 28-S Valve Spring Cap Kohler – Genuine OEM Replacement Engine Part
The Kohler 25 173 28-S Valve Spring Cap is a genuine OEM replacement internal engine component designed for select Kohler small engines. This valve spring cap is a critical part of the valve train assembly, securing the valve spring in place and ensuring proper valve operation during engine performance.
Commonly replaced during cylinder head service, valve train repairs, or engine rebuilds, this OEM component is manufactured to Kohler factory specifications for correct fit, durability, and long-term reliability.
Product Details
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Manufacturer Part Number: 25 173 28-S
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Brand: Kohler
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Part Type: Valve Spring Cap
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Application: Engine Valve Train / Cylinder Head Assembly
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OEM Status: Genuine Kohler OEM Replacement Part
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Condition: New
Function
The Kohler 25 173 28-S Valve Spring Cap is designed to:
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Secure the valve spring within the cylinder head
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Maintain proper valve spring tension during operation
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Support smooth valve opening and closing
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Replace worn, damaged, or missing valve spring caps
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Ensure reliable valve train performance
Compatibility
This OEM valve spring cap fits select Kohler small engine models commonly used in:
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Riding lawn mowers
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Lawn tractors
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Zero-turn mowers
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Commercial outdoor power equipment
⚠️ Always verify your exact engine model and specification number before ordering to ensure correct fitment.
Installation / Usage
The valve spring cap installs on the top of the valve spring as part of the cylinder head valve train assembly. Replacement is recommended if:
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Performing valve or cylinder head service
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Valve spring components show wear or damage
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Engine rebuild requires new valve train parts
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Valve train noise or improper operation is present
For best results:
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Follow Kohler service manual procedures
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Inspect valve springs and retainers during installation
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Use only genuine Kohler OEM internal engine components
Maintenance Tips
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Inspect valve train parts during major engine servicing
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Replace worn components promptly to prevent engine damage
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Maintain proper lubrication and cooling to reduce wear
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OEM parts ensure correct fit and long-term reliability
