×
Description
25 100 52-S Exhaust Flange Locknut Kohler – Genuine OEM Replacement Part
The Kohler 25 100 52-S Flange Locknut (Exhaust) is a genuine OEM replacement fastener designed for select Kohler small engines. This locking flange nut is specifically used in exhaust system applications to securely fasten exhaust manifold components under high heat and vibration conditions.
Manufactured to Kohler factory specifications, this OEM locknut provides the correct fit, reliable holding strength, and long-term durability for outdoor power equipment engines.
Product Details
-
Manufacturer Part Number: 25 100 52-S
-
Brand: Kohler
-
Part Type: Flange Locknut (Exhaust)
-
Application: Exhaust Manifold / Engine Exhaust Mounting Hardware
-
Fastener Style: Locking Nut with Integrated Flange
-
OEM Status: Genuine Kohler OEM Replacement Part
-
Condition: New
Function
The Kohler 25 100 52-S Exhaust Flange Locknut is designed to:
-
Secure exhaust manifold and exhaust system components
-
Prevent loosening from heat expansion and engine vibration
-
Provide strong fastening with integrated flange support
-
Replace worn, missing, or corroded exhaust locknuts
-
Maintain safe and leak-free exhaust operation
Compatibility
This OEM exhaust flange locknut fits select Kohler small engine models commonly used in:
-
Riding lawn mowers
-
Lawn tractors
-
Zero-turn mowers
-
Commercial outdoor power equipment
⚠️ Always verify your engine model and specification number before ordering to ensure correct fitment.
Installation / Usage
This flange locknut is used in exhaust mounting locations where secure fastening is critical. Replacement is recommended if:
-
Exhaust hardware becomes loose or damaged
-
Corrosion affects nut strength
-
Exhaust leaks develop at the manifold connection
-
Exhaust components are removed during service
For best results:
-
Follow Kohler torque specifications
-
Replace exhaust gaskets when servicing the manifold
-
Use OEM exhaust fasteners for proper fit and durability
Maintenance Tips
-
Inspect exhaust mounting hardware regularly
-
Replace corroded nuts promptly to prevent exhaust leaks
-
Ensure exhaust components remain tight under vibration
-
OEM locknuts provide long-term reliability in high-heat conditions
