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FREE GROUND SHIPPING ON ORDERS OVER $99
Orders over $99 will have free standard ground shipping within the contiguous United States (Alaska and Hawaii are excluded) and to Canada (remote areas excluded). Learn more
Piston ring set for loader, excavator, and Toolcatâ„¢ engines designed to seal the cylinder so that combustion gas generated at the time of ignition does not leak into the opening between the piston and the cylinder.
Includes top ring, second ring, oil ring.
If your engine is blowing smoke, using excessive oil, or at a loss for power, it may be time for new rings.Â
Due to engineering standards, some parts are updated or changed and are assigned a new part number. Previous part number was 6655178. This part is the direct replacement.
WARNING:This product can expose you to chemicals including engine exhaust (including diesel engine exhaust when equipped), lead and lead compounds, mineral oils, soots, phthalates, and carbon monoxide which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
Certain specification(s) are based on engineering calculations and are not actual measurements. Specification(s) are provided for comparison purposes only and are subject to change without notice. Specification(s) for your individual equipment will vary based on normal variations in design, manufacturing, operating conditions, and other factors.
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Customer photos and videos - Standard Piston Ring Set for Engines (6684803)
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to save equipment for future use.
Check to see if your machine is eligible for more coverage by entering your serial number under Eligibility Check below.
What is covered?
Loaders
You have three options: 1) Full Protection – most comprehensive coverage 2) Powertrain + Hydraulics – powertrain plus hydraulic components only 3) Powertrain – engine and drive components only.
Excavators
You have three options: 1) Full Protection – most comprehensive coverage 2) Powertrain + Hydraulics – powertrain plus hydraulic components only 3) Powertrain – engine and drive components only.
Tractors
You have three options: 1) Full Protection – most comprehensive coverage 2) Powertrain + Hydraulics – powertrain plus hydraulic components only 3) Powertrain – engine and drive components only.
Toolcatâ„¢ Utility Work Machines
You have three options: 1) Full Protection – most comprehensive coverage 2) Powertrain + Hydraulics – powertrain plus hydraulic components only 3) Powertrain – engine and drive components only.
Telehandlers
You have three options: 1) Full Protection – most comprehensive coverage 2) Powertrain + Hydraulics – powertrain plus hydraulic components only 3) Powertrain – engine and drive components only.
Utility Vehicles (UTV)
For new Bobcat utility vehicles, Protection Plus offers full protection on engine and transmission components, plus HVAC, plus Main Frame, plus Electrical Components, PLUS more!
Zero-Turn Mowers (ZTR)
For new Bobcat zero-turn mowers, we offer a limited extended warranty.
Saved Equipment Guide
Keep your equipment information organized by saving your Bobcat models and serial numbers to make finding compatible products even easier.
How to Use ‘Saved Equipment’
Without signing in, you can save one machine by clicking ‘Add Equipment’ at the top of the page. Once you create an account or sign in, you can save and edit multiple models and serial numbers by clicking ‘Add Equipment’. Click on any of your saved machines and click ‘Apply’ to see the compatible products for your serial number. If you want to look at all products without any serial number applied, you can click on the green slider at the top of the page to view all products.
Where I Can Find My Saved Equipment
Your equipment information will always be at your fingertips every time you sign in. Your active machine will be visible at the top of the page by the search bar. Once you sign in, you will see all of your saved equipment. Click on your active equipment at the top of the page. A window opens showing all your saved equipment. Select the machine that needs new parts, accessories, or attachments, and click ‘Apply’.
Where's My Serial Number
The serial number location can vary by type of machine, series, year of manufacture and other factors. Use this guide to help locate your machine's serial number.
