Caldera Spas Corner Spa Pillow [Light Gray] (77531)

Pillows
Caldera Spas
77531
6.1"
10.3"
Caldera Spas (2016+)
Light Gray
Corner | Back No. 1515101-1
COMPARE AT $53.99
OUR PRICE $42.99
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Part 77531 is a light-gray Caldera corner pillow listed for 2016-and-newer spas. The supplier also identifies it as “UTO HG 16-C” and gives the number 1515101-1 as a marking found on the back of the pillow. Its 10.3-inch width by 6.1-inch height makes it larger than some of the 9¼-inch Caldera corner-headrest designs.

Product Details

  • Supplier designation: UTO HG 16-C.
  • Light-gray finish, described as ultra light gray.
  • Measures 10.3 inches wide and 6.1 inches tall.
  • Listed for 2016-to-current Caldera spa applications.
  • Back-of-pillow marking 1515101-1 provides a secondary way to identify the component.

The back marking is particularly useful because this pillow can resemble other gray corner pieces in photographs. Part 77531 refers to this specific corner-pillow configuration.

Caldera Spas – Spa Filters, Heaters, Controls & Replacement Parts
Who is Caldera Spas?

Caldera Spas is a hot tub brand with spa lines designed around hydrotherapy, water care, and comfortable soaking. Depending on the model and manufacturing year, a Caldera hot tub may contain specialized equipment and model-specific components.

What products are used in Caldera Spas systems?

Caldera systems use service parts such as filters, pumps, heaters, sensors, control boards, topside interfaces, jet assemblies, and plumbing fittings. Some components are shared across compatible models, while others require an exact match to the spa series or equipment revision.

Why choose compatible Caldera Spas replacement parts?

Using the correct Caldera Spas replacement part helps maintain heating, water treatment, circulation, and jet performance. Because control systems and replacement assemblies can change between model years, selecting by appearance alone may lead to an incompatible purchase.

How do you identify and choose the correct Caldera Spas part?

Start with your Caldera spa model and serial or production information, then compare the original component number where available. Verify electrical specifications, connection types, dimensions, and any stated model-year compatibility, especially for control boards, heaters, and topside panels.

Need help finding the right Caldera Spas part?

At Bath & Spa Parts Online, we help customers locate replacement parts for Caldera Spas hot tubs and spa systems. Can’t find the part you need? Contact our Product Specialists at 800-918-9143, use our live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for additional guidance.

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