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1978 Honda CB750F Master Cylinder Kits & Reservoir Parts

Master-cylinder service on the 1978 CB750F starts with identifying the front or rear assembly. Dedicated rebuild kits are separately listed for each position, and a front reservoir diaphragm has its own application. Caps and a hose-junction boot provide further choices for more specific component repairs.

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Currently viewing Master Cylinder & Rebuild Parts

Honda motorcycle parts

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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...
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Honda CB900 CB750 CB650 front master cylinder assembly

Honda CB900 / CB750 / CB650 Front Master Cylinder Assembly

$109.95 USD
08-0457
Fit a blacked-out front master cylinder to your late-'70s or early-'80s DOHC CB with this Front Brake Master Cylinder Assembly. Usable on any single...
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•...
Honda CB750F front master cylinder rebuild kit 45530-410-305

Honda CB750F Front Master Cylinder Rebuild Kit ~ Replaces 45530-410-305

$39.95 USD
08-0279
Rebuild your 1977-78 CB750F's front master cylinder with this Front Brake Master Cylinder Rebuild Kit, replacing OEM #45530-410-305. Made in Japan.Key Features• Front master...
Honda CB1100 CB1000 CB900 master cylinder reservoir cap 45513-341-771

Honda CB Master Cylinder Reservoir Cap ~ Replaces 45513-341-771

$39.95 USD
29-0054
Restore your master cylinder cap with this Master Cylinder Cap with Plastic O-Ring, replacing OEM #45513-341-771. This original style was discontinued long ago by...
Honda CB750F rear master cylinder rebuild kit 43530-410-305

Honda CB750F Rear Master Cylinder Rebuild Kit ~ Replaces 43530-410-305

$39.95 USD
08-0274
Service your late-'70s CB750F's rear master cylinder with this Rear Master Cylinder Rebuild Kit, replacing OEM #43530-410-305.Key Features• Rear master cylinder rebuild kit• Replaces...
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,...
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Honda CB750 CB125 CB100 rear brake light switch spring 35357-107-010

Honda CB750 / CB125 / CB100 Rear Brake Light Switch Spring ~ Replaces 35357-107-010

$7.00 $6.50 USD
You save $0.50
73-0848
Replace your rear brake stop switch spring with this Rear Brake Light Stop Switch Spring. This is the spring that attaches to the rear...
Honda CB750F front master cylinder reservoir diaphragm 45520-371-003

Honda CB750F Front Master Cylinder Reservoir Diaphragm ~ Replaces 45520-371-003

$7.95 USD
08-0283
Replace the diaphragm on your 1977-78 CB750F front master cylinder reservoir with this Front Master Cylinder Reservoir Diaphragm, replacing OEM #45520-371-003 / #44520-371-013.Key Features•...
New
Honda CB750F Honda front brake hose three-way joint 45123-410-000

1977-78 Honda CB750F Genuine Honda Front Brake Hose Three-Way Joint ~ OEM 45123-410-000

$27.95 USD
99-5075
Upgrade or restore your classic Honda motorcycle braking system with this Genuine Honda Front Brake Hose Three‑Way Joint — precision‑engineered and quality made in...
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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...
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Honda CB750 replacement brake lever for master cylinder 08-0253

Replacement Brake Lever for Master Cylinder 08-0253

$9.95 USD
08-0029
Replace the brake lever on the #08-0253 Master Cylinder Assembly specifically with this Brake Lever. Designed for this particular master cylinder, not stock brake...
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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1978 Honda CB750F · Master-cylinder parts Buying guide

Choosing master-cylinder repair parts

Front and rear rebuild kits are separate choices for the 1977–78 CB750F. Identify the assembly being repaired, then select its reservoir and rubber parts by their own applications and references.

Master cylinder parts to consider

Honda CB750F Front Master Cylinder Rebuild Kit ~ Replaces 45530-410-305 Front rebuild kitJapanese-made front master-cylinder rebuild kit for the 1977–78 F.View part Honda CB750F Rear Master Cylinder Rebuild Kit ~ Replaces 43530-410-305 Rear rebuild kitRear master-cylinder rebuild kit listed for the 1977–78 F.View part Honda CB750F Front Master Cylinder Reservoir Diaphragm ~ Replaces 45520-371-003 Reservoir diaphragmFront reservoir diaphragm, part 08-0283.View part

Related parts: Re-made reservoir cap · Master cylinder boot

Front and rear kit references

Front kit 08-0279 replaces 45530-410-305; rear kit 08-0274 replaces 43530-410-305. Both list the 1977–78 F. If a master cylinder has been replaced with a different assembly, identify that assembly before ordering either original-application kit.

Confirm the internal repair contents

The front and rear kit descriptions identify their applications and replacement references without itemizing the internal pieces. Confirm the contents against the planned repair before adding individual seals or other internal parts to the same order.

Master cylinder questions

Does the selected reservoir diaphragm also cover the rear master cylinder?

Diaphragm 08-0283 is specifically listed for the front reservoir on the 1977–78 F. A rear application is not established for this product, so identify the rear reservoir’s required diaphragm separately.

Does the remade reservoir cap include its seal?

Cap 29-0054 is supplied with a plastic O-ring and replaces 45513-341-771. Match the retained reservoir and cap reference before ordering; account for the included O-ring when planning the repair.

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