Exhaust Stack Insulation Disc, 18″ OD x 8″ ID Hotsy

SKU 8.717-442.0 Category
  • 18″ OUTER Diameter
  • 8″ INNER Diameter
  • Refractory Grade Ceramic
  • Retains heat inside coil for better fuel efficiency and paint protection



Part Number: 8.717-442.0
Cross Reference Part Number(s): 7-014864, 87174420, 873749, 95573650, 9.557-365.0

This 8.930-141.0 Hotsy Exhaust Stack Insulation measures 18 Inches Outer Diameter and 8 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:

Hotsy Portable Models: 560ss, 771, 772

Hotsy Gas-Engine 1200 Series including: 1260ss, 1260ssg, 1270ss, 1270ssg, 1280ss, 1280ssg, 1285ss, 1285ssg, 1290ss, 1290ssg,

Hotsy Stationery Natural Gas-Fired Models: 921N, 926N, 943N, 944N, 942N, 945N, 1453N, 1454N, 1452N, 1455N, 1451N, 1456N, 1473N, 1474N, 1475N

Hotsy Stationery LP Propane-Fired Models: 921P, 926P, 943P, 944P, 942P, 945P, 1453P, 1454P, 1452P, 1455P, 1451P, 1456P, 1473P, 1474P, 1475P

Hotsy Electric Portable Diesel-Oil Fired Models: 821, 842, 843, 844, 845, 851, 852, 853, 854, 855, 856, 873, 874

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.


18 in.

Inner Diameter

8 in.

Memorial Day Observance

In honor of the Memorial Day weekend, Northstar Clean Concepts will be operating at limited capacity on Friday, May 24th, 2024, and will be closed on Monday, May 27th.

As a result, orders placed after 12:00pm (PDT) on May 24th may not be processed until Tuesday, May 28th. 

If you have any questions, please feel free to call us during our regular business hours, 7:30a-4:00p (PDT), at (509) 535-1555 and we will be happy to help!

Scroll to Top