Kohler 4641-0 Toilet Tank 1.6 Gpf Classic Style

Product Description

The KOHLER 4641-0 is a toilet tank designed for use in the Memoirs Classic collection, a bath suite built around traditional architectural detailing and stylized crown-molding-inspired lines. This tank operates at 1.6 gallons per flush (gpf) and includes a left-hand polished chrome trip lever. At its core is a canister flush valve engineered to harness gravity, directing a powerful reducing cascade of water to maximize flush effectiveness without excess water use. It is installed by licensed plumbers and experienced finish contractors in residential bath and powder room applications.

This tank pairs directly with the K-4380 bowl to form the complete K-3818 Memoirs toilet. It is suited for both full bathrooms and powder rooms and coordinates with the broader Memoirs collection of fixtures and faucets carrying the Classic design language. The Classic style is distinguished by rounded detailing that references crown molding, setting it apart from the Stately variant within the same Memoirs suite.

Key Features

• 1.6 gpf flush rate meets standard residential water consumption requirements
• Left-hand polished chrome trip lever included
• Class Five canister flush valve uses gravity-fed cascade for optimized flush power
• Canister design maximizes water flow out of the tank during each flush cycle
• Classic style detailing with rounded lines referencing traditional crown molding
• Coordinates with the full Memoirs Classic collection of fixtures and faucets

Compatibility

Combines with the K-4380 bowl to create the complete K-3818 Memoirs toilet. Coordinates with other products in the Memoirs collection with Classic design.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply and drain the existing tank fully before removal or installation. Verify the K-4380 bowl is present before installing this tank, as it is not a standalone unit. Do not overtighten tank-to-bowl bolts, as cracking the vitreous china is a common failure point during installation.

Technical Specifications

• Flush Rate: 1.6 gpf (6.0 lpf)
• Trip Lever Hand: Left-hand
• Trip Lever Finish: Polished Chrome
• Flush Valve Type: Class Five canister
• Design Style: Classic
• Compatible Bowl: K-4380
• Complete Toilet Assembly: K-3818 Memoirs

Standard Information

• Brand: KOHLER
• Manufacturer Part Number: 4641-0