Jacuzzi TC550-MB Internal Assembly (42-3702-20-K)

Type:	CFR Filters & Parts
Mfr	Carvin/Jacuzzi
Mfg Part #	42-3702-20-K
Hzn Part #	17-105-1167

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TAGS: carvinjacuzzi, cfrfilters, poolparts

Details

(DISCONTINUED BY MANUFACTURER)

SEE REPLACEMENT PART: OBSOLETE

An internal assembly can be the best answer when the inside of a filter has multiple worn points that are no longer working together as intended, and this Jacuzzi TC550-MB Internal Assembly is designed for compatible applications where the original internal structure has become unreliable. When the working core of the filter has seen widespread wear, a grouped replacement can make the repair feel much more complete.

The TC550-MB fit gives this assembly practical value because internal filter systems work best when the key internal parts are matched to each other and to the original filter design. A properly selected assembly helps restore the intended internal layout and operating relationship of the unit.

This style of replacement is especially useful when the outer tank remains serviceable and the weak point is centered on the internal system itself. That can make the repair more efficient and more confidence-inspiring once installed.

Installed in the proper setup, this internal assembly helps restore dependable filter function and supports a more complete repair overall.

Internal assembly for compatible Jacuzzi TC550-MB filter applications
Helps restore the main internal working structure of the filter
Useful when multiple internal parts are worn or damaged
Supports a cleaner and more complete repair
Improves filter reliability and service confidence

Carvin / Jacuzzi – Spa Pumps, Filters, Jets and Pool & Spa Equipment

Who is Carvin / Jacuzzi?

Carvin, associated with the globally recognized Jacuzzi brand, is a leading manufacturer of pool and spa equipment known for innovation in hydrotherapy and water management. With decades of experience, Jacuzzi has become one of the most recognized names in the industry, while Carvin has built a strong reputation for producing high-performance components used in pools, spas, and hot tubs worldwide. Together, they represent a legacy of quality, reliability, and advanced engineering.

What products does Carvin / Jacuzzi specialize in?

Carvin / Jacuzzi specializes in pumps, filtration systems, spa jets, heaters, and water circulation components. Their product lineup includes high-performance pool and spa pumps, cartridge and sand filters, jet systems, and replacement parts designed to support efficient water flow and hydrotherapy performance. These components are commonly used in both new installations and replacement applications.

Why choose Carvin / jacuzzi parts for your pool or spa?

Carvin / Jacuzzi products are known for durability, performance, and trusted brand recognition. Their equipment is engineered to deliver consistent water circulation, effective filtration, and reliable hydrotherapy. Pool professionals and homeowners choose Carvin / Jacuzzi for dependable components that enhance system efficiency, extend equipment life, and maintain a premium spa experience.

How do you identify and choose the correct Carvin / Jacuzzi part?

To select the correct Carvin / Jacuzzi part, it’s important to match your system specifications, including pump model, filter type, jet configuration, and connection sizes. Checking part numbers and equipment labels ensures compatibility and proper performance. Choosing the right component helps maintain efficient operation and prevents system issues.

Need help finding the right Carvin / Jacuzzi part?

At Bath & Spa Parts Online, we carry a wide selection of Carvin / Jacuzzi pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the 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 expert support.