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1974 Honda CB360G Front Master Cylinder Parts

Begin a CB360G master-cylinder order by identifying the unit on the handlebar. An original-style rebuild kit, a 14 mm replacement assembly and reservoir sealing parts address different repairs; they should not be mixed simply because they appear under the same motorcycle.

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Currently viewing Master Cylinder & Rebuild Parts

Honda motorcycle parts

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Honda CB750 CB550 CB400F front master cylinder kit 45530-377-305

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-377-305

$37.95 USD
08-0215
Rebuild your early SOHC CB's front master cylinder with this Front Brake Master Cylinder Rebuild Kit, replacing OEM #45530-377-305. Made in Japan. Fits the...
Honda CB750 CB550 CB500 master cylinder rubber boot 45522-300-010

Honda CB Master Cylinder Rubber Boot ~ Replaces 45522-300-010

$9.95 USD
33-0003
Replace your master cylinder rubber boot with this Master Cylinder Rubber Boot, which attaches where the brake hose joins the master cylinder. Replaces OEM...
New
Honda CB750 CB550 CB400F front master cylinder assembly 5 8 in.

Honda CB Front Master Cylinder Assembly ~ 5/8 in.

$99.95 USD
08-0253
Drop in a factory-look master cylinder with a performance piston size using this Front Brake Master Cylinder Assembly. Black body with silver lever, custom-manufactured...
Honda CB750 CB550 CB400F master cylinder diaphragm 45520-300-000

Honda CB Master Cylinder Reservoir Diaphragm ~ Replaces 45520-300-000

$10.95 USD
08-0282
Replace a hardened or torn master cylinder diaphragm with this Master Cylinder Reservoir Diaphragm, replacing OEM #45520-300-000. Exceptional range of applications, fits FRONT master...
New
Honda CB750 CB550 CB400F front master cylinder assembly 14mm

Honda CB Front Master Cylinder Assembly ~ 14mm

$99.95 USD
08-0269
Restore strong and consistent braking performance with this Front Brake Master Cylinder Assembly, designed as a high-quality replacement for many classic Honda models. This...
Honda CB1000 CB900 master cylinder reservoir cap plastic o-ring 45521-MJ6-006

Honda CB Master Cylinder Reservoir Cap Plastic O-Ring ~ Replaces 45521-MJ6-006

$4.95 USD
29-0062
Replace your master cylinder cap O-ring with this Master Cylinder Reservoir Cap Plastic O-Ring, replacing OEM #45521-MJ6-006.Key Features• Master cylinder reservoir cap O-ring• Plastic•...
Universal Honda-type front master cylinder assembly 13mm

Universal Honda-Type Front Master Cylinder Assembly ~ 13mm

$84.95 USD
08-0262
Upgrade to a universal front master cylinder assembly with this Honda-type unit. Complete with lever, banjo bolt, banjo bolt washers, and brake light switch,...
Sold out
Honda CB750 CB650 CB550 replacement brake lever for master cylinder

Honda CB Replacement Brake Lever for Master Cylinder 08-0262

$9.95 USD
08-0430
Replace the brake lever on the #08-0262 Master Cylinder Assembly specifically with this Brake Lever. Designed for this particular master cylinder.Key Features• Replacement brake...
Honda CB1100 CB1000 CB900 master cylinder reservoir cap 43513-MJ6-006

Honda CB Master Cylinder Reservoir Cap ~ Replaces 43513-MJ6-006

$23.45 USD
29-0080
Replace your master cylinder reservoir cap with this Master Cylinder Reservoir Cap with Diaphragm, round OEM thread-on type. Cap replaces OEM #43513-MJ6-006, diaphragm replaces...
Magura universal front master cylinder assembly 13mm

Magura Universal Front Master Cylinder Assembly ~ 13mm

$259.00 USD
08-0250
Build a custom front brake setup with this Magura Universal Front Brake Master Cylinder. Features a 13mm piston diameter, 12mm stroke, and a threaded...
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1974 Honda CB360G · Front Master Cylinder Parts Buying guide

Identify the master cylinder before its repair parts

The CB360G’s front disc brake uses a hydraulic master cylinder, but decades of replacement parts can change the bore, cap and lever. Use the installed component, as well as the bike model, to choose what fits.

Parts to consider

Honda CB Front Master Cylinder Rebuild Kit ~ Replaces 45530-377-305 Master cylinder rebuild kitJapan-made rebuild kit with reference 45530-377-305. Identify the master cylinder before choosing its internal parts.View part Honda CB Front Master Cylinder Assembly ~ 14mm 14 mm master cylinderAftermarket assembly with a 14 mm piston, black body and silver lever. Verify bore and connections against your brake system.View part Honda CB Master Cylinder Reservoir Cap ~ Replaces 43513-MJ6-006 Reservoir cap and diaphragmRound thread-on reservoir cap with diaphragm. Cap reference 43513-MJ6-006; diaphragm reference 45520-300-000.View part

Related parts: Reservoir diaphragm

Rebuild the correct unit

The rebuild kit references 45530-377-305 and is made in Japan. Its CB360G application does not establish that it fits every aftermarket master cylinder. If the handlebar unit has been changed, match its bore and internal construction before ordering rather than using the motorcycle’s year alone.

Treat bore choice as a brake-system decision

The featured replacement has a 14 mm piston, black body and silver lever. Other assemblies in the grid have different bores or universal applications. Do not treat a larger bore as an automatic braking improvement; verify suitability with the complete hydraulic system and retain correct brake-light operation.

Front Master Cylinder Parts questions

Will the rebuild kit fit the featured 14 mm replacement?

Do not assume that from the shared category. Identify the exact master-cylinder design and its specified rebuild parts; the kit’s original-style application alone does not confirm interchange with an aftermarket assembly.

Does the reservoir cap include a diaphragm?

Yes. The round thread-on cap is supplied with a diaphragm. A diaphragm is also linked separately, which is useful when the existing cap is suitable for reuse.

Should I choose 14 mm or a different bore?

Match the installed brake system and component requirements. The featured unit has a 14 mm bore, but this guide does not establish another bore as an upgrade or prescribe a hydraulic conversion.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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