Available Parts List Found Below Diagram.

Fluval U4 Parts

Fluval U4 Stage 1 Replacement Foam Filter Pad 2 Pack
Retail Price: $14.99
Our Low Price: $8.59
Availability: In Stock
A-488
Fluval U4 Stage 2 Replacement Poly / Carbon Cartridge 2 Pack
Retail Price: $11.99
Our Low Price: $9.88
Availability: In Stock
A-492
Fluval U4 Stage 2 Replacement Poly / Clearmax Algae Reducing Cartridge 2 Pack
Retail Price: $14.99
Our Low Price: $11.87
Availability: In Stock
A-483
Fluval U2 U3 and U4 Biomax Ceramic Biological Filtration Media 6oz
Retail Price: $11.99
Our Low Price: $9.31
Availability: In Stock
A-495
Fluval U4 Replacement Plastic Biomax Cartridge / Holder Only - No Biomax
Retail Price: $22.99
Our Low Price: $15.73
Availability: In Stock
A-15407
Fluval U4 Replacement Foam Cartridge Frame Only - No Foam
Retail Price: $14.99
Our Low Price: $9.67
Availability: In Stock
A-15419
Fluval U4 Replacement Plastic Filter Body
Retail Price: $41.99
Our Low Price: $31.89
Availability: In Stock
A-15409
Fluval U4 Replacement Plastic Flip Top Filter Cover
Retail Price: $14.99
Our Low Price: $9.85
Availability: In Stock
A-15410
Fluval U1 U2 U3 & U4 Replacement Directional Output Nozzle
Retail Price: $20.99
Our Low Price: $15.52
Availability: In Stock
A-15044
Fluval U1 U2 U3 & U4 Replacement Venturi Valve
Retail Price: $18.99
Our Low Price: $13.61
Availability: In Stock
A-13921
Fluval U4 Replacement Filter Holder / Bracket
Retail Price: $26.99
Our Low Price: $20.07
Availability: In Stock
A-15404
N. Fluval 04 05 06 FX5 FX6 And Plus Series 30mm Replacement Suction Cup 4 Pack
Retail Price: $18.99
Our Low Price: $13.84
Availability: In Stock
A-15041
Fluval 4  Plus and U4 Replacement Magnetic Impeller - REPLACE ANNUALLY To Prevent Failure
Retail Price: $29.99
Our Low Price: $23.51
Availability: In Stock
A-15432
Fluval U4 Replacement Impeller Shaft Assembly - REPLACE ANNUALLY To Prevent Failure
Retail Price: $21.99
Our Low Price: $15.77
Availability: In Stock
A-15401
Fluval U4 Underwater Filter Replacement Motor Unit With NO Impeller
Retail Price: $56.99
Our Low Price: $42.19
Availability: In Stock
A-15403
Fluval Suction Cups for Fluval U Three Pack
Retail Price: $25.99
Our Low Price: $19.12
Availability: In Stock
A-15039