KOHLER Archer Comfort Height 2-piece 1.28 GPF Elongated Toilet with AquaPiston Flushing Technology in Cashmere-K-3551-K4 - The Home Depot
Message to Our Customers


Model # K-3551-K4

Internet # 203075180

Archer Comfort Height 2-piece 1.28 GPF Elongated Toilet with AquaPiston Flushing Technology in Cashmere

KOHLER Archer Comfort Height 2-piece 1.28 GPF Elongated Toilet with AquaPiston Flushing Technology in Cashmere

This item has been discontinued.
The Home Depot no longer carries this specific product.
Please select another option below.

$399.08 / each


Model # K-3551-K4

Internet # 203075180

The Archer Comfort Height Toilet combines exceptional performance and the enduring transitional style of the Archer collection. Blending subtle design elements found in Craftsman furniture and the intricate facets of fine jewelry, this combination of beveled edges and curved bases creates a timeless look that complements a wide range of styles. Available in an array of Kohler colors to match any bathroom decor.

  • Elongated bowl offers added room and comfort
  • Comfort Height feature offers chair-height seating that makes sitting down and standing up easier for most adults
  • 1.28 gallons per flush (gpf)
  • 2-1/8 in. glazed trapway
  • Standard left-hand trip lever included, seat and supply line not included
  • Combination consists of the Kohler K-4356 bowl and the K-4431 tank
  • Coordinates with other products in the Archer collection
  • DryLock System saves installation time and helps prevent water leakage
  • Single-flush gravity uses the force of gravity and a precision-engineered tank, bowl, and trapway to create a strong siphon during flushing
  • AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), increasing the power and effectiveness of the flush
  • Flush valve's 3: 2 ratio harnesses the natural force of gravity and optimizes flush performance
  • Durable canister design has 90% less exposed seal material than a 3 in. flapper, for leak-free performance
  • Light-touch canister flush requires a lower actuation force than a flapper
  • AquaPiston canister flush valve optimizes flush performance and resists warping and deterioration
  • WaterSense toilets meet strict EPA flushing guidelines, including using at least 20 percent less water than 1.6-gallon toilets
  • Eligible for consumer rebates in some municipalities
  • DryLock System saves installation time and helps prevent water leakage.

    Kohler AquaPiston Flushing Technology

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Bowl Height (in.) 
Flush Valve Size (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Bowl Height 
Comfort Height 
Bowl Shape 
Color Family 
Commercial / Residential 
Flushing Mechanism 
Gravity Flush 
Flushing Technology 
Gravity Fed 
Flushing Type 
Single Flush 
Gallons Per Flush 
1.28 gal (US) 
MaP Performance Rating 
Vitreous China 
Mount Location 
Floor Mount 
Product Weight (lb.) 
96.5 lb 
Rough In Size 
Toilet Features 
No Additional Features 
Toilet Included Components 
Trip Lever Location 
Left Side 
Trip Lever Location 
Left Side 
Warranty / Certifications
Certifications and Listings 
ADA Compliant,ANSI Certified,CSA Certified,EPA Approved 
Manufacturer Warranty 
One-Year Limited Warranty 


Rated 4.6 out of 5 by 16 reviewers.
Rated 4.0 out of 5.0 by Couldn't expect more from toilet....well maybe one thing... Very beautiful...for a toilet. My only frustration was, for the rather lofty price, it didn't come with a seat. (Although it does state this somewhere in description, I just assumed it would. For the $$ cost and well, frankly, it can't be used, comfortably anyway, without a seat, shouldn't the seat be included? Well I guess it's true what "they" say about "assume".) Because I had to spend over $60 for a seat in addition to the toilet price, I only gave it 4 out of 5 stars. After saying this....the Home Depot part in all this order was great. Very timely shipping too. March 13, 2015
Rated 3.0 out of 5.0 by No toilet seat! This is a toilet pictured on the website with a toilet seat. I had ordered it for my husband who is handicapped and was so happy when it arrived. I scheduled a plumber to install it and he said there was no seat in either of the two boxes it came in. I called the Home Depots customer service line and the lady who answered had to put me on hold for about ten minutes while she researched this product and then told me I would need to order a toilet seat. I informed her that the photo in the website is extremely misleading and my complaint fell on deaf ears. I had to order a seat for another $69. So be aware that if you purchase this toilet then you need to also order a toilet seat. May 19, 2015
Rated 5.0 out of 5.0 by Nice Piece of Furniture for the Bathroom Very nice - looks great - sits high and cleans easily. Great quiet and fast flush - absolutely happy and would recommend May 5, 2015
Rated 5.0 out of 5.0 by Beautiful and efficient Love the style of this toilet. Got the soft close lid which fits it perfectly. The tank did come with a 1 inch chip on it, but the tank lid hides it. Be sure to check over your toilet when you take delivery! So far the flush seems very strong. No need to flush twice even though it's only 1.28 gallons. March 13, 2014
Rated 5.0 out of 5.0 by nice design for toilet alcove this comfort height toilet replaced a leaky 20 year old one piece kohler toilet. this is a great design and the toilet tank fits well with the base unit in design. Flush seems great, quiet unit. Purchased the slow close lid. June 12, 2014
Rated 5.0 out of 5.0 by Archer grey toilet excellent option for our bath remodel! we searched for a grey toilet, oddly non-existent, but found at Home Depot online!! one bad comment is that the seat is a separate purchase. how would you buy a new toilet without a seat?? April 29, 2014
Rated 5.0 out of 5.0 by Stylish and reliable I originally bought the one piece for > $500, but it cracked the first time I sat on it. I replaced it with the 2-piece and the savings helped pay for re-install. Also, this one is a bit taller than the one piece. December 19, 2013
Rated 4.0 out of 5.0 by good qualty...went together verry easy I replaced a dual flush toilet with this one. The Kohler significantly out performed my old toilet. It's nice having to only flush once. June 24, 2014
  • 2015-05-22T12:22:40.571-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_16, tr_16
  • loc_en_US, sid_203075180, prod, sort_default
2 >>


Standard Shipping includes delivery by small parcel service. Processing time varies by product.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.