Nordic Whirlpool Diverter Jet 102046 as used in Crown XL and other Nordic hot tub models.

Original jet, 5 1/4 inches in diameter.

Diameter measurement across front face of jet

30102046

Revo Style Jet used in 2008 - 2018 model year spas.

Color is black with stainless.  Part 102046 or 30102046