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Description
M-640034-S – Kohler Rocker Arm Bolt M6 x 1.0 x 34 mm (Genuine OEM Replacement Bolt)
The Kohler M-640034-S Rocker Arm Bolt is a genuine OEM replacement fastener specifically engineered to secure the rocker arm assembly on a wide range of Kohler small engines. Featuring an M6 x 1.0 metric thread and 34 mm length, this precision-manufactured bolt ensures proper rocker arm alignment and maintains the correct valve train geometry for reliable engine performance.
Manufactured from high-strength steel and finished with a corrosion-resistant coating, the M-640034-S is built to withstand continuous engine vibration, heat, and mechanical stress, making it an essential component during valve train service, engine repairs, and rebuilds.
Product Details
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Part Number: M-640034-S
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Brand: Kohler
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Part Type: Rocker Arm Bolt
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Thread Size: M6 x 1.0
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Length: 34 mm
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Material: High-Strength Steel
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Finish: Corrosion-Resistant Coating
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Installation: Direct OEM Replacement
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Genuine Kohler OEM Part
Specifications
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Thread Size: M6 x 1.0
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Length: 34 mm
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Application: Rocker Arm Mounting Bolt
Key Features
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Genuine Kohler OEM replacement bolt
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Precision M6 x 1.0 metric thread
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34 mm overall length
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Designed specifically for rocker arm assemblies
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High-strength steel construction
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Corrosion-resistant finish
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Withstands high engine temperatures and vibration
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Direct-fit OEM replacement
Function
The Kohler M-640034-S Rocker Arm Bolt secures the rocker arm to the cylinder head, maintaining proper valve train alignment and ensuring accurate valve operation. Correct installation and torque are critical for reliable engine performance, valve timing, and long engine life.
Compatible Equipment
The Kohler M-640034-S is used on numerous Kohler Command, Courage, Confidant, and other compatible gasoline engines installed on:
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Zero-turn mowers
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Riding lawn mowers
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Garden tractors
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Commercial turf equipment
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Utility vehicles
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Generators
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Pressure washers
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Other outdoor power equipment powered by compatible Kohler engines
Always verify your engine model and illustrated parts list before ordering.
Who Is This For?
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Small engine repair technicians
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Commercial landscapers
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Equipment maintenance professionals
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Outdoor power equipment dealers
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Homeowners performing engine repairs
Recommended Applications
Ideal for replacing damaged, stretched, corroded, or missing rocker arm bolts during valve adjustments, cylinder head service, engine rebuilds, and routine maintenance.
Pros
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Genuine Kohler OEM quality
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Precision M6 x 1.0 thread
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Designed specifically for rocker arm assemblies
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High-strength steel construction
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Corrosion-resistant finish
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Excellent resistance to vibration
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Long service life
Cons
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Fits only compatible Kohler engine applications
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Must be tightened to the manufacturer's specified torque to ensure proper valve train operation
Comparison – Kohler M-640034-S vs Generic Metric Bolts
Kohler M-640034-S
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Genuine OEM specifications
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Engineered for rocker arm applications
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Precision thread and length
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High-strength construction
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Reliable long-term durability
Generic Metric Bolts
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May not meet OEM hardness or dimensional specifications
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Incorrect length or strength can affect valve train performance
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Reduced reliability in critical engine applications
Why Buy from Barry's Power Equipment?
Barry's Power Equipment supplies genuine Kohler OEM engine components trusted by professional technicians and outdoor power equipment owners.
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Genuine OEM Kohler replacement parts
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Fast nationwide shipping
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Competitive pricing
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Expert technical support
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Extensive inventory for Kohler and other leading outdoor power equipment brands
