Front Brake Caliper Piston Seal - 45108-300-003 - Honda CB350/360/400/450/500/550/650/750 CM400

$4.50
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Reproduction Honda piston seal for the front brake caliper. Replace the piston seal when replacing your piston or after cleaning the stock piston. Forms a tight seal to prevent brake fluid from seeping past the piston.

Sold Individually, only one is necessary to rebuild the front brake caliper.

Equivalent to Honda OEM part number: 45108-300-003

Outer Diameter: 44mm
Inner Diameter: 39mm
Thickness: 3mm
Height: 3.3mm

Fits Honda:

CB350F Four - 1972-1974
CB360 - 1974
CB360G - 1974
CB360T - 1975-1976
CB400F Super Sport - 1975-1977
CB400A Hawk Hondamatic - 1978
CB400T Hawk - 1980
CB400TII Hawk II - 1978-1979
CM400A Hondamatic - 1979-1981
CM400T - 1979-1981
CB450K Super Sport - 1970-1974
CB500K Four - 1971-1973
CB500T Twin DOHC - 1975-1976
CB550F Super Sport- 1975-1977
CB550K Four - 1974-1978
CB650C Custom - 1981
CB750C Custom - 1981
CB750K Four - 1969-1976

13 Reviews Hide Reviews Show Reviews

  • 5
    Its a rubber seal

    Posted by Justin on 22nd Jul 2022

    If you can get your piston out of the darn caliper then you can just clean everything and replace this seal. Glad you can get this product easily.

  • 5
    Caliber seal

    Posted by Donald Legere on 2nd Mar 2021

    Worked well.

  • 5
    Exactly what I needed

    Posted by Hansi on 12th Feb 2021

    Easy to install, good price fast shipping.

  • 5
    ok

    Posted by Dimitris Daras on 26th Nov 2020

    ok

  • 5
    GREAT REPRO 's.

    Posted by Jerry Juenemann on 3rd Aug 2020

    Fits and works GREAT

  • 5
    Great replacement part

    Posted by Unknown on 13th Sep 2019

    Works as advertised and is sized perfectly for my 1971 CB450K4. Other options were too thick, this one was just right!

  • 5
    GREAT REPRO 's.

    Posted by Jerry Juenemann on 11th May 2019

    Worked great for my rebuild.

  • 3
    Does't fit 1980 CB750c

    Posted by Unknown on 19th Jun 2018

    Didn't see one listed for an '80 cb750 so thought I'd try one that's supposed to fit a '81... But it's too small. Tore it trying to make it fit. For $11 shipped, it was worth a gamble I suppose.

  • 5
    Works Perfect

    Posted by Eric S on 9th May 2016

    Was having some front brake locking issues and a friend recommended replacing the seal. Did it and now no more issues! Easy installation