Viper Series Toilet Repair Parts
by Gerber

Viper toilets by Gerber are popular for their water efficiency and sleek design. Repair leaks as soon as possible with our quality Gerber replacement parts. From flush valves and fill valves to flappers and trip levers, we've got everything you need to fix your Viper toilet.

Replacement Parts for Gerber Viper Toilets
Two-Piece Model - Tanks # 28-590, 28-592, 28-594, & 28-595

Parts diagram for Gerber Viper toilets - tank numbers 28-590, 28-592, 28-594, and 28-595
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapater fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber flush valve 99-648 99-648 2" Flush Valve with 8-1/8" overflow length - includes flapper and chain Discontinued
Replaced by 99-652
gerber flush valve 99-652 99-652 2" Flush Valve with 7-3/4" overflow length - includes flapper and chain $12.69 Enter a quantity and
5 gerber flapper 99-647 99-647 Flapper - with chain and green baffle $8.13 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Left Side Tank Lever - Chrome $27.12
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank to bowl kit 99-537 99-537 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $11.78 Enter a quantity and
8 gerber black gasket 99-582 99-582 Tank Gasket ONLY - Discontinued Replaced with
99-537 above
9 bemis affinity premium round toilet seat 200e4 200E4 Quality Bemis "Will Fit" Round Toilet Seat - White (view more color options) $60.56 Enter a quantity and
bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper VP Toilets
Two-Piece Model - Tanks # VP-28-590, VP-28-592, & VP-28-595

Parts diagram for Gerber Viper VP series toilets - tank numbers VP-28-590, VP-28-592, and VP-28-595
Item # Image Part # Description Price & Quantity
1 gerber 99-300 fill valve 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber toilet flush valve 99-006 99-006 3" Flush Valve with 6-3/4" overflow length - includes flapper and chain $20.99 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank to bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit three inch gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper VP Toilets
Two-Piece Model - Tank # VP-28-594

Parts diagram for Gerber Viper VP series toilets - tank number VP-28-594
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber flush valve with flapper 99-002 99-002 Flush Valve - includes flapper and chain Discontinued
gerber flush valve ga712002 GA-712002 3" Flush Valve with 7-5/8" overflow length - includes flapper and chain $13.05 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit tank to bowl gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper High Efficiency Toilets
Two-Piece Model - Tank # HE-28-570

Parts diagram for Gerber Viper high efficiency tolets - tank number HE-28-570
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber toilet flush valve 99-838 99-838 3" Flush Valve with 2" extended base - 5-3/4" overflow length - (7-3/4" from tank bottom to top of overflow) - includes flapper and chain $21.32 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank to bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit three inch tank to bowl gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 white 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper High Efficiency Toilets
Two-Piece Model - Tank # HE-28-590

Parts diagram for Gerber Viper high efficiency toilets - tank number HE-28-590
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber flush valve with flapper 99-002 99-002 3" Flush Valve - includes flapper and chain Discontinued
gerber flush valve ga712002 GA-712002 3" Flush Valve with 7-5/8" overflow length - includes flapper and chain $13.05 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank to bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit three inch tank to bowl beveled gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper High Efficiency Toilets
Two-Piece Model - Tanks # HE-28-592, HE-28-594, & HE-28-595

Parts diagram for Gerber Viper high efficiency toilets - tank numbers HE-28-592, HE-28-594, and HE-28-595
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber flush valve 99-793 99-793 3" Flush Valve with 5-7/8" overflow length - includes flapper and chain $20.78 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit 3 inch tank to bowl beveled gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper WaterSense Toilets
Two Piece Model - Tank # WS-28-590

Parts diagram for Gerber Viper WaterSense toilets - tank number WS-28-590
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber flush valve with flapper 99-002 99-002 Flush Valve - includes flapper and chain Discontinued
gerber flush valve ga712002 GA-712002 3" Flush Valve with 7-5/8" overflow length - includes flapper and chain $13.05 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit three inch gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper WaterSense Toilets
Two-Piece Model - Tank # WS-28-591

Parts diagram for Gerber Viper WaterSense toilets - tank number WS-28-591
Item # Image Part # Description Price & Quantity
1 gerber toilet fill valve ga711023 GA711023 Fill Valve $23.99 Enter a quantity and
2 image unavailable GA711006 Flush Valve - includes flapper and chain $11.44 Enter a quantity and
3 image unavailable GA715014 Flapper with Chain $7.42 Enter a quantity and
4 gerber tank lever chrome 99-001 99-001 Front Mount Left Side Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
5 image unavailable GA700460 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $5.96 Enter a quantity and
6 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
7 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Model - Tanks # WS-28-592, WS-28-594, & WS-28-595

Parts diagram for Gerber Viper toilets - tank numbers WS-28-592, WS-28-594, and WS-28-595
Item # Image Part # Description Price & Quantity
1 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
2 fluidmaster replacement cap 385 385 Fill Valve Cap Assembly Repair Kit - includes diaphragm and float lever fulcrum $5.87 Enter a quantity and
3 refill tube angle adapter fla218 218 Refill Tube & Angle Adapter $4.67 Enter a quantity and
4 gerber flush valve 99-793 99-793 Flush Valve - includes flapper and chain $20.78 Enter a quantity and
5 gerber flapper 99-788 99-788 Flapper with Chain $10.37 Enter a quantity and
6 gerber tank lever chrome 99-001 99-001 Front Mount Toilet Tank Lever - Chrome $27.12 Enter a quantity and
gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
7 gerber tank to bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 gerber will fit three inch tank to bowl gasket WF3 "Will Fit" Tank Gasket ONLY $4.89 Enter a quantity and
9 bemis affinity premium elongated toilet seat 1200e4 1200E4 Quality Bemis "Will Fit" Elongated Toilet Seat - White (view more color options) $67.91 Enter a quantity and
10 toilet bowl cap set white "Will Fit" Toilet Bowl Bolt Caps (2) - White (view more color options) $2.99 Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Models #
GWS31500, GWS31510, GVP31502, GVP31512, GWS31517,
GHE31519, GWS31504, GWS31514, GWS31524
GTB30528, GTB30552 GWS31502, GWS31512, GWS31518
Tanks #
GVP38590, GWS38590, GWS38595 & GWS38594

Parts diagram for Gerber Viper toilets - tank number #GVP38590
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 image unavailable GA712028 Flush Valve Temporarily Unavailable Enter a quantity and
6 image unavailable GA715067 Flapper Temporarily Unavailable Enter a quantity and
7 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
8 gerber tank to bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
9 image unavailable GA713019WH Tank Lever Temporarily Unavailable Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Models #GWS20551, GWS20528
Insulated Tank #GWS28522
Tank #GWS28528

Parts diagram for Gerber Viper toilets - tank number #GWS28528
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 gerber toilet flush valve 99-854 99-854 Flush Valve - includes flapper and chain $10.08 Enter a quantity and
gerber flush valve 99-853 99-853 Flush Valve (for Insulated tanks) - includes flapper and chain $11.69 Enter a quantity and
6 image unavailable 99-012 Flapper with Chain $4.49 Enter a quantity and
7 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
8 image unavailable 99-856 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $6.26 Enter a quantity and
9 gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Model #GWS21519
Insulated Tank #GWS2857097
Tank #GWS28570

Parts diagram for Gerber Viper toilets - tank numbers #GWS28570 & GWS2857097
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 gerber toilet flush valve 99-854 99-854 Flush Valve - includes flapper and chain $10.08 Enter a quantity and
gerber flush valve 99-853 99-853 Flush Valve (for Insulated tanks) - includes flapper and chain $11.69 Enter a quantity and
6 image unavailable 99-012 Flapper with Chain $4.49 Enter a quantity and
7 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
8 image unavailable 99-856 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $6.26 Enter a quantity and
9 gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
image unavailable 99-001-RHWH Front Mount Right Side Tank Lever - White Temporarily Unavailable Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Models #
GDF20528, GDF20551
Tank #GDF28528

Parts diagram for Gerber Viper toilets - tank number #GDF28528
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 image unavailable GA712019 Flush Valve Temporarily Unavailable Enter a quantity and
6 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
7 gerber tank bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 image unavailable GA713012 Top Button Temporarily Unavailable Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Models #
GLF20500, GLF20517
Tank #GLF28595

Parts diagram for Gerber Viper toilets - tank numbers #GWS28570 & GWS2857097
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 image unavailable GA712018 Flush Valve Temporarily Unavailable Enter a quantity and
6 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
7 gerber tank bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 image unavailable GA713014 Top Button Temporarily Unavailable Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Models #
GLF20551, GLF20528
Tank #GLF28528

Parts diagram for Gerber Viper toilets - tank number #GLF28528
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 image unavailable GA712018 Flush Valve Temporarily Unavailable Enter a quantity and
6 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
7 gerber tank to bowl kit 99-660 99-660 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $12.80 Enter a quantity and
8 image unavailable GA713013 Top Button Temporarily Unavailable Enter a quantity and

Replacement Parts for Gerber Viper Toilets
Two-Piece Model #GWS20022
Right Hand Tank #GWS2857597
Tank #GWS28575

Parts diagram for Gerber Viper toilets - tank number #GWS28575
Item # Image Part # Description Price & Quantity
4 gerber fill valve 99-300 99-300 Fill Valve $25.06 Enter a quantity and
5 gerber toilet flush valve 99-854 99-854 Flush Valve - includes flapper and chain $10.08 Enter a quantity and
6 image unavailable 99-012 Flapper with Chain $4.49 Enter a quantity and
7 image unavailable GA715050 Plastic Bolt Caps Temporarily Unavailable Enter a quantity and
8 image unavailable 99-856 Tank Assembly Kit - includes tank gasket, bolts, washers, and nuts $6.26 Enter a quantity and
9 gerber tank lever white 99-001 99-001-WH Front Mount Left Side Tank Lever - White $26.09 Enter a quantity and
image unavailable 99-001-RHWH Front Mount Right Side Tank Lever - White Temporarily Unavailable Enter a quantity and

Related Items & Information

Frequently Asked Questions

Q. "How can I find the model number of my Gerber toilet?"
A. Look inside your tank. Always exercise caution when removing the tank lid, as it is fragile and can be easily broken if stepped on or dropped. Look inside the tank starting with the back wall - for non-pressure assist models, the model number will be painted just above the waterline (example below left). For pressure assist tanks, the number will be closer to the top of the tank (example below right). Please note that due to safety concerns with pressure assist toilets, we choose not to offer parts for these models.

How to find your Gerber toilet model number

Have questions about toilet parts or toilet repair?

Toilet Repair Information & FAQs

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