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KOHLER
KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

Best price now

$52.39at FUCHS BertrandChecked 5 h ago

66% under what the other stores charge

Compared across 7 stores. Prices are checked against each store and labelled with when.

Visit FUCHS Bertrand
Kohler discount code →

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Price facts

  • Lowest price today: $52.39 at FUCHS Bertrand (checked Nov 10, 2026).
  • Checked at 7 stores.

Our take on the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

The Kohler Highline Arc is a two-piece elongated toilet with a single 1.28 gallon gravity flush and a taller-than-standard bowl. The extra-tall height puts the seat closer to chair level, which helps adults with knee or hip trouble and anyone who dislikes bending low. It is WaterSense certified, comes with a slow-close plastic seat, and uses a standard 12-inch rough-in. Against one-piece and pressure-assisted toilets it is simpler and quieter, but it lacks a dual flush and the plastic seat feels less premium than the vitreous china bowl.

Best forTall adults and older buyers who want an easier seat heightBathroom remodels with a standard 12-inch rough-inHouseholds replacing a worn two-piece toiletBuyers who want a quiet gravity flush
Pros
  • Extra-tall bowl is easier to sit on and stand up from
  • WaterSense-certified 1.28 GPF gravity flush
  • Slow-close seat included
  • Elongated bowl gives more seating room
  • Standard 12-inch rough-in fits most bathrooms
  • Simple two-piece design is straightforward to install
Cons
  • Single flush only, no dual-flush option
  • Plastic seat rather than a painted or wood seat
  • Two-piece design has a seam that collects dust
  • Heavy at about 102 lb, so it needs two people to lift
  • Extra-tall bowl may feel too high for shorter users or small children

KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0 prices at every store

  • FUCHS BertrandNew

    In stockReturn policy

    $52.39Checked 5 h ago
    Visit FUCHS Bertrand
  • Ma boutiqueNew

    In stock

    $52.39Checked 5 h ago
    Visit Ma boutique
  • EDELFELT VeroniqueNew

    In stockShips from France · duties may applyReturn policy

    $52.39Checked 5 h ago
    Visit EDELFELT Veronique
  • The Home DepotNew

    In stock

    $189.00Checked 6 h ago
    Visit The Home Depot
  • Trumans Fabric and FoamNew

    Availability unknown

    $153.93Checked 5 h ago
    Visit Trumans Fabric and Foam
  • WalmartNew

    Availability unknownSold by UnbeatableSale

    $232.97Checked 5 h ago
    Visit Walmart
  • Go Build Supply & MoreNew

    Availability unknown

    $240.90+ $250.00 shippingChecked 6 h ago
    Visit Go Build Supply & More

KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0 price history

Lowest price we've seen: $153.93 on Nov 10 at Trumans Fabric and Foam. Tracked across 4 stores since Nov 10.

What reviewers say

Owners of Kohler Highline toilets generally report reliable flushing and easy installation, and the extra-tall version is liked by taller and older users. Complaints tend to focus on the plastic seat and the occasional weak flush or fill valve issue.

What people mention
  • Seat heightPraisedTaller and older owners say the extra-tall bowl is much easier on the knees than a standard toilet.
  • Flush performanceMixedMost say the 1.28 GPF gravity flush clears waste reliably, but some report occasional weak flushes.
  • Seat qualityCriticisedThe included slow-close seat is plastic and feels less solid than the china bowl.
  • InstallationPraisedBuyers say the two-piece setup and standard rough-in make installation manageable with basic tools.
  • WeightCriticisedAt around 102 lb the boxed toilet is hard to move alone and needs a second person.

From Ma boutique

  • Highline Arc two-piece elongated toilet
  • Extra-tall height
  • 1.28 GPF single-flush
  • White finish
  • Seat included
  • Model 78305-0
In the box
Toilet, Seat

About the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

Description

None

Specifications

Type
Toilet
Dual Flush
No
Flush Volume
1.28 GPF
Macerating Flush
No
Flush Type
Gravity Fed, Single Flush, Single-flush gravity
Pressure Assisted Flush
No
Flush Features
WaterSense certified

Questions and answers

Is the extra-tall height worth it?
If you are tall or have trouble bending, yes. The taller bowl reduces the drop when sitting and the effort when standing. Shorter adults and small children may find it too high.
Does it fit a standard 12-inch rough-in?
Yes. It is built for a 12-inch rough-in, the most common spacing in US bathrooms. Measure from the finished wall to the closet bolts before buying.
What is included in the box?
The toilet bowl, tank, and a slow-close elongated seat come with it, along with the installation hardware. A 7/8-inch flexible supply hose is supported but not included.
How does it compare with a one-piece toilet?
A one-piece toilet has no seam and is easier to clean, but it is heavier and usually more expensive. This two-piece model is simpler to install and lift in sections.
Does it have a dual flush?
No. It is a single-flush gravity toilet at 1.28 gallons per flush, which meets WaterSense. There is no half-flush button.
Is the seat slow-close?
Yes. The included elongated seat has a slow-close lid and ring, so it will not slam.
Where is the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0 cheapest?
At FUCHS Bertrand, for $52.39, 66% under what the other stores charge, as of our latest check.
Where can I buy the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0?
7 stores we checked sell it, including FUCHS Bertrand, Ma boutique, Trumans Fabric and Foam, Walmart, EDELFELT Veronique.

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Compare the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

  • Kohler Highline Arc The Complete Solution 2-Piece 1.28 GPF Single Flush Elongated vs KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

Buying guides that pick the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0

  • Best two-piece toilets with arc bowl

Stores we've priced the KOHLER Highline Arc Extra-Tall 2-Piece Elongated Toilet Model 78305-0 at

  • Home Depot deals and prices
  • Trumans Fabric and Foam deals and prices
  • Walmart deals and prices

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Included Accessories
Everything necessary for installation
Supported Accessories
7/8” Flexible Supply Hose
Size Dimensions
15.47 in (width)
Size Weight
102.10 lb
Rough-In Size
12 inch
Installation Type
3-bolt installation
Included Components
Everything necessary for installation
Bowl Shape
Elongated
Bowl Material
Vitreous China
Seat Size
Elongated
Seat Type
Elongated, Slow-close
Seat Features
Slow-close
Seat Material
Plastic
Color
White
Height
Comfort height
Length
29.54 in
Style
Modern