The 212-1247 (often sold as 212-1247B) is a Waterway Adjustable Mini Directional Jet Internal.
This 2-1/2" (or 2-5/8") snap-in jet features a 5-scallop textured gray face and is a standard component across the spa industry.
Because Waterway Plastics is a major original equipment manufacturer (OEM), this specific mini jet is found in many different brands as either original equipment or a standard replacement part.
Spa Manufacturers and Brands Using the 212-1247 Jet
Dynasty Spas: This brand specifically uses the 212-1247 as an original part (Dynasty P/N 10915).
Cal Spas: Frequently used as a direct replacement for discontinued Cal Spa jet numbers
Master Spas: Utilized as a standard internal for their mini-jet configurations.
Coleman Spas: Common in legacy and contemporary models utilizing 2-1/2" jet housings.
Sundance Spas: Often used as a generic replacement for original Sundance mini-jets.
Hot Springs: Employed as a compatible replacement part across several product lines.
LA Spas: Found in various models that use Waterway Mini series jet bodies.
Catalina Spas: Standard equipment or replacement for their directional mini-jets.
Strong Spas: Uses these for secondary therapy jets and cluster configurations.
Technical Details for Replacement (2025)
Installation Style: Snap-In. This style uses a simple push-and-click mechanism rather than threads.
Face Style: 5-point textured scalloped design in gray.
Dimensions: The face diameter is approximately 2-5/8 inches, and the total length is 1-13/16 inches.
Cross-Reference Numbers: 212-1247B, 10915 (Dynasty), 4-40-0321, 55-270-1626, and 806105029553.
Nozzle Requirement: If you are replacing an older internal in an existing jet body, you may need a new style nozzle (such as 212-0890) as older nozzles may not fit newer internals.
