Valve Guide for Kohler K241, K301, K321, K341, M10, M12, M14, M16 Engines

(10 reviews) Write a Review
Frequently bought together:


iSaveTractors Valve Guide for Kohler K241, K301, K321, K341, K482, K532, and K582 Engines.

Will also Fit M10, M12, M14, M16 Magnum Series Engines.


  • ID: 0.309"
  • OD: 0.625"
  • Length: 2.129"


  • Kohler: 235007-S



These guides will need to reamed to a final size of .3125" ID. You can do this with a 5/16" Chucking Reamer Tool in a handheld power drill or with a handheld tap wrench chuck. This is also cited on page 11.6 of the Kohler Service Manual.

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10 Reviews

  • 5
    The problem fixer I hope

    Posted by Does this stop it from smoking? on May 7th 2021

    Does this stop it from burn oil or smoking

  • 5
    Valve guides, carburetors all great

    Posted by Paul VanValkenburg on Dec 4th 2020

    Awesome to deal with

  • 5
    Great Product

    Posted by Jason Sharp on Oct 25th 2020

    Highly recommend

  • 5
    Valve Guides

    Posted by Brent Derksen on Jul 19th 2020

    Just as described and fit well. Only thing I would add is the option of a reamer to be included to ream them after installation. Not many places around my area carry a 5/16 reamer for some reason.

  • 3
    Polish the end before installing.

    Posted by on Mar 5th 2020

    These are a good replacement for a K341 but a very tight fit. Best to use a driver with a pneumatic hammer. The guide had a tool burr on the end that I sanded off before installing.

  • 5
    simplisity is usfull

    Posted by david k browns on Feb 26th 2019

    I get back later

  • 5
    Quality part.

    Posted by John on Jun 21st 2018

    Old guide must be removed, new one pressed in and reamed with .325" chucking reamer. Complete instructions are available online from factory Kohler manual. Could pose problems if you don't have basic machining skills.

  • 5

    Posted by Kyle on Apr 20th 2018

    I live in Michigan and I had my order in two days.

  • 5
    New Life

    Posted by Ernest Szymkowiak on Feb 28th 2017

    Waiting to get my engine back so I can finish putting together my engine

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