Tank Assembly Kit, Rubber, Brass, Plastic
Key features
- •MN: 99-537
- •Country of manufacture: China
- •Manufacturer: Gerber
BrandGerber
CategoryToilet Repair Kits
Tank Assembly Kit, Rubber, Brass, Plastic
List Price: $50.63$45.57DEALYou Save: $5.06 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 22, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.6
out of 5
Based on 10 reviews
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Things ware out
The'WaterBoy✓ Verified Purchase•November 7, 2023
This returns the parts that ware out over time to new.
Measure old gasket to help choose between 99-537 and 99-591.
M. DRAVES✓ Verified Purchase•November 5, 2023
Gerber Part 99-537(Black Gasket and Parts)
From Label:
Tank Assembly Kit
FOR 28-490/590/790 TANKS
Barcode: 6 71052 59455 9
My Measurements:
Outer Cylinder Diameter: 3 3/4" or 9.5cm
Center Hole Diameter on cone side: 2 1/4" or 5.7cm
Outer Cylinder Height: 1 1/8" or 2.9cm
Total Height including top cone: 1 19/32" or 4cm
Hole diameter on cylinder side: 3 5/16" or 8.4cm
Thickness of wall on cylinder side: 7/32" or .6cm
Depth of Hole on cylinder side: 15/32" or 1.2cm
Gerber Part 99-591 (Green Gasket)
From Label:
Tank to Bowl Gasket
FOR 28-380/384/385,
DF-28-380/384/385, AND
EF-28-380/384/385 TANKS
Barcode: 6 71052 59304 0
My Measurements:
Outer Cylinder Diameter: 3 7/8" or 9.8cm
Center Hole Diameter on cone side: 2 1/8" or 5.5cm
Outer Cylinder Height: 1" or 2.5cm
Total Height including top cone: 1 3/8" or 3.4cm
Hole diameter on cylinder side: 3 3/8" or 8.5cm
Thickness of wall on cylinder side: 9/32" or .7cm
Depth of Hole on cylinder side: 15/32" or 1.2cm
The original gasket I had was black but the green replacement was the closest match.
From Label:
Tank Assembly Kit
FOR 28-490/590/790 TANKS
Barcode: 6 71052 59455 9
My Measurements:
Outer Cylinder Diameter: 3 3/4" or 9.5cm
Center Hole Diameter on cone side: 2 1/4" or 5.7cm
Outer Cylinder Height: 1 1/8" or 2.9cm
Total Height including top cone: 1 19/32" or 4cm
Hole diameter on cylinder side: 3 5/16" or 8.4cm
Thickness of wall on cylinder side: 7/32" or .6cm
Depth of Hole on cylinder side: 15/32" or 1.2cm
Gerber Part 99-591 (Green Gasket)
From Label:
Tank to Bowl Gasket
FOR 28-380/384/385,
DF-28-380/384/385, AND
EF-28-380/384/385 TANKS
Barcode: 6 71052 59304 0
My Measurements:
Outer Cylinder Diameter: 3 7/8" or 9.8cm
Center Hole Diameter on cone side: 2 1/8" or 5.5cm
Outer Cylinder Height: 1" or 2.5cm
Total Height including top cone: 1 3/8" or 3.4cm
Hole diameter on cylinder side: 3 3/8" or 8.5cm
Thickness of wall on cylinder side: 9/32" or .7cm
Depth of Hole on cylinder side: 15/32" or 1.2cm
The original gasket I had was black but the green replacement was the closest match.
This is the extra think gasket kit for older Gerber toilets.
David✓ Verified Purchase•October 18, 2023
This is the super sized rubber gasket kit required to fix older Gerber toilets. Mine was manufactured March 17 1992 (date stamped into the porcelain of the tank) and is a 28-290 model. There is also an A21 stamped into the tank but I'm not sure what that indicates.
The new gasket and tank screws worked perfectly.
Word of warning: The orange and blue home supply stores carry a Fluidmaster extra thick gasket which you may think will work. It will not, some older Gerber toilets need an even thicker, deeper, fuller gasket, than the Fluidmaster extra thick gaskets. If you want to try anyway, because you're adventurous like that, don't fill your tank all the way on your first test flush; Less water for you to mop off your floor. You're welcome.
The new gasket and tank screws worked perfectly.
Word of warning: The orange and blue home supply stores carry a Fluidmaster extra thick gasket which you may think will work. It will not, some older Gerber toilets need an even thicker, deeper, fuller gasket, than the Fluidmaster extra thick gaskets. If you want to try anyway, because you're adventurous like that, don't fill your tank all the way on your first test flush; Less water for you to mop off your floor. You're welcome.
Fits Gerber AquaSaver Toilet #28-790
Lynn✓ Verified Purchase•October 10, 2023
After replacing the wax ring, our toilet developed another leak. This leak seemed to be coming from somewhere between the toilet & the tank. It was a slow leak & we were able to catch the drip in a plastic cup. We shopped locally for parts we thought were needed, but kept buying the wrong sizes. So I shopped online for the specific parts we needed for repair & found this kit which was reasonably priced.
This assembly kit came quickly. It worked perfectly for our Gerber Aqua Saver #28-790 toilet purchased in 2002. Gerber uses plastic wing nuts to prevent over-tightening. You are instructed to hand tighten the wing nuts.
Included in the kit is:
a beveled gasket/washer
bolts, washers & nuts
2 channel pads
instruction sheet with schematic
Do not use in-tank, drop-in toilet bowl cleaners containing chlorine or bleach.
This is a Fluidmaster product.
This assembly kit came quickly. It worked perfectly for our Gerber Aqua Saver #28-790 toilet purchased in 2002. Gerber uses plastic wing nuts to prevent over-tightening. You are instructed to hand tighten the wing nuts.
Included in the kit is:
a beveled gasket/washer
bolts, washers & nuts
2 channel pads
instruction sheet with schematic
Do not use in-tank, drop-in toilet bowl cleaners containing chlorine or bleach.
This is a Fluidmaster product.
This Is What I Needed!
J. FOLSOM✓ Verified Purchase•September 24, 2023
I should have gotten this when the dripping started. Easy to install - and it worked.
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