Exhaust Stack Insulation Disc, 16″ OD x 8.3″ ID Hotsy

SKU 9.802-904.0 Category
  • 16″ OUTER Diameter
  • 8.3″ INNER Diameter
  • Refractory Grade Ceramic
  • Retains heat inside coil for better fuel efficiency and paint protection



Part Number: 9.802-904.0
Cross Reference Part Number(s): 98029040, 7-014862, 873779

This 9.802-904.0 Hotsy Exhaust Stack Insulation measures 16 Inches Outer Diameter and 8.3 inches Inner Diameter. Sometimes referred to as the Top Hat Insulation, it installs inside the removable cover above the heating coil.

This insulation is for use on the following Hotsy Hot Water Pressure Washers:

• 444 • 660ss • 921ss
• 550A • 781ss • 965ss
• 550B • 790ss • 1065
• 550C • 795ss • 1065sse
• 555ss • 795ss-208 • 1075
• 558 • 870ss • 1075sse
• 559 • 871ss

NOTE: Coil insulation is designed for specific brands and models of pressure washers and is NOT interchangeable.  Please consult your Operator’s Manual to verify you are purchasing the correct part, or feel free to call us for assistance.


16 in.

Inner Diameter

8.3 in.

Juneteenth Observance

In observance of Juneteenth, UPS and some of our manufacturing partners will be closed on Wednesday, June 19th.  This may result in some brief processing and shipping delays on orders placed during the week of June 15th – June 21st.

If you have any questions, please feel free to call us during our regular business hours, 7:30a-4:00p (PDT), Monday-Friday at (888) 269-0172 and we will be happy to help!

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