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Replacement Joystick Rubber Boot

  • $24.00
  • or

Koyker Joystick Part 664541

Rubber boot replacement part for Koyker loader joysticks. 

Part fits the small loader valve where the joystick is attached directly to the valve. In older Koyker manuals, it was called the Dinoil valve.

Note: Part does not fit 2 & 3 spool joystick with the cables. Please see pictures for dimensions and example of boot with small loader valve.

Part Number: K664541

    This product does not qualify for returns. Please make sure this product is the correct size and will work for your equipment before purchasing. If you have questions or concerns, please contact our Koyker Customer Service Team at 1-800-456-1107.

    We try our best to ship orders in the timeliest manner possible. Each product may have a different level of manufacturing demand and timeframe for shipment.

    Shipping Rates

    We offer calculated shipping rates during the checkout process. USPS and UPS options are available if the product ordered qualifies for those options.

    Order Processing

    Business Days: Monday-Thursday.
    Holidays, Fridays, Saturdays and Sundays are not included in processing days.

    If you have any questions or concerns about your order's status, please email us at to discuss.


    Products on this website do not qualify for returns. We understand this may cause you concern....

    We are here to help!

    Our customer service team is available Monday-Friday, 8am to 5pm CST to discuss the parts in question PRIOR to placing your order.

    Call us toll free at 1-800-557-4689 to talk and confirm your parts needed.

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    NOTE: All product specifications are subject to change or improvement without notice. We reserve the right to change product pricing at any time without further notice. Pricing may differ at the time of purchase.

    Contact Sioux Steel by emailing or by calling our customer service specialists at 1-800-557-4689 for additional information.

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    Ask a Question
    • Does this boot come with the strap to attach to valve?

      Thank you for the great question! No, the joystick boot does not come with a specific strap. We suggest working with your local hardware store to locate a heavier duty zip tie to utilize.

    • Hi, Can you ship to Australia. I would like to order a K664541 joystick boot. Can you please advise. Thank you. Anthony.

      Thank you for connecting with us! Yes, we can ship internationally :) Thank you for the great question!

    • How much does this stretch? My joystick base is 3"x2.5" and 4" tall with a 7/16" joystick diameter.

      Greetings! There is some flexibility. Given the information provided, we believe the boot would fit your joystick base. Thank you for the great question!

    • I have a yanmar ym3110d with factory loader that needs a joystick boot will this fit my loader?

      Thank you for asking! Since this is not a Koyker valve, we would not guarantee it would fit. On a few of the product photos, however, there are dimensions listed to help determine if it could possibly fit.

    • I have a Koyker 120 that attached to a Yanmar 1720D. It looks about 20 years old. Would the boot fit that model? Thanks

      Greetings! Thank you for reaching out. Yes, this part should fit.

    • I have a Koyker 210 loader with joystick. Is K664541 the correct boot?

      Thank you for reaching out. Yes! This is the correct part.


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