DEX4820BTC | Hayward Filter Head & Clamp For SwimClear & Pro-Grid | 48 Sq. Ft

OEM Hayward DEX4820BTC Filter Head with Clamp System is a complete upper tank replacement designed for Hayward Pro-Grid DE4820 and SwimClear C4030, C4025, and C4020 filters. This assembly includes the reinforced upper filter body, aluminum clamp ring, and metal-reinforced tank seal, ensuring a leak-free, pressure-resistant connection between the filter halves. Built from chemical-resistant materials to endure harsh pool environments, the DEX4820BTC simplifies servicing with a clamp design that provides fast access to internal components. Replacing a damaged or leaking filter head helps restore system performance and filtration efficiency.

Highlights

• OEM Replacement for DE4820 and C4030 Filters: Designed for exact fit with Pro-Grid and SwimClear mid-size filter systems

• Includes Clamp, Head, and Gasket: Comes with aluminum clamp, filter top, and metal-reinforced O-ring for a secure tank seal

• Resistant to Harsh Pool Conditions: Constructed from corrosion-resistant materials built for long-term durability and pressure stability

• Clamp Design for Easy Maintenance: Enables quick disassembly for cleaning, grid replacement, or internal inspection

• Restores Pressure and Flow Integrity: Replacing old components supports leak prevention and prolongs filter system lifespan

Compatibility

• Hayward ProGrid Vertical Grid DE Series Filter: DE4820
• Hayward SwimClear Cartridge Filter: C4030

Note: This may be compatible with your filter, please check owners manual to ensure compatibility.

Includes

• (1) Filter Head
• (1) Metal Reinforced O-Ring
• (1) Aluminum Clamp Assembly

Additional Info

Fixing Leaks and Damaged Filter Tops

water leaking at filter seam replace with dex4820btc

cracked upper housing causing pressure issues

filter head misaligned during cleaning replace assembly

clamp ring won't tighten due to warped tank top

air entering filter check top tank seal and clamp

In-Store Replacement for Mid-Size Filters

buy dex4820btc in store for c4030 or de4820 filter

hayward upper tank head available locally for pickup

walk in to get complete filter top and clamp kit

same-day replacement available for mid-size hayward filters

local shop carries oem filter head assembly for swimclear

Confirming Compatibility and Setup

does dex4820btc fit hayward c4025 cartridge filter

works with pro-grid de4820 vertical grid system

includes clamp, o-ring, and upper filter body

install guide for replacing swimclear filter head

confirm fitment with user manual for de and c models

Diagram