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1978 Honda CB750K Seat Cover, Lock & Fittings

The 1978 CB750K seat choices here are repair components: a cover for the original seat, lock parts, hinge pin and cushion rubber. Assess the existing seat pan and fittings before ordering. The installed-seat photograph on the cover listing does not mean a complete seat is supplied.

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Honda CB750 CB650 CB550 CB500 seat lock bar assembly 77220-340-003

Honda CB Seat Lock Bar Assembly ~ Replaces 77220-340-003

$54.95 USD
73-1070
Replace your seat lock bar with this Seat Lock Bar Assembly, replacing OEM #77220-340-003 / #77220-340-011.Key Features• Seat lock bar assembly• Replaces OEM #77220-340-003...
Honda CB750 CB650 CB550 CB500 CB400 seat lock with keys 77230-399-007

Honda CB Seat Lock with Keys ~ Replaces 77230-399-007

$28.95 USD
73-0140
Restore your seat lock with this Seat Lock with Keys, replacing OEM #77230-399-007 / #77230-107-711.This seat lock works perfectly for the bikes listed; the...
Honda CB seat rubber b 77205-286-000

Honda CB Seat Rubber B ~ Replaces 77205-286-000

$7.87 USD
02-6533
Replace those worn, dried-out seat rubbers under your classic Honda with this Seat Setting Rubber "B", a direct replacement for OEM #77205-286-000. One of...
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Honda CB750K seat cover replacement

1978 Honda CB750K Seat Cover

$109.95 USD
73-1083
Refresh your seat with this Replacement Seat Cover with Reinforced Passenger Strap (No hardware or chrome trim included just re-use existing hardware). There is...
Honda CB750K seat hinge pin 77203-405-000

1977-78 Honda CB750K Seat Hinge Pin ~ Replaces 77203-405-000

$4.61 USD
73-0946
Replace your seat hinge pin with this Seat Hinge Pin, replacing OEM #77203-405-000.Note: 2 used per bike, order the quantity you require.Key Features• Seat...
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1978 Honda CB750K · Seat cover, lock & fittings Buying guide

Assess the seat base, closure and upholstery separately

The cover excludes hardware and chrome trim. The replacement lock has keys and a stated projection difference from OEM. Hinge pins and rubber supports are separate choices that should be checked against the existing seat.

Parts to consider

Honda CB Seat Lock with Keys ~ Replaces 77230-399-007 Replacement seat lock with keysLock referencing 77230-399-007 and 77230-107-711. The locking mechanism projects slightly farther than the OEM type.View part 1977-78 Honda CB750K Seat Hinge Pin ~ Replaces 77203-405-000 Seat hinge pinPin referencing 77203-405-000. The listing states two used per bike; order the number needing replacement.View part Honda CB Seat Rubber B ~ Replaces 77205-286-000 Seat cushion rubber BSeat-to-frame cushion referencing 77205-286-000, sold individually. Compare the fitted support and quantity needed.View part

Related parts: Cover for the original 1978 seat · Separate seat lock bar assembly

Keep the existing pan and trim in the cover plan

The cover fits the original 1978 stock seat and includes a reinforced passenger strap. Hardware and chrome trim must be retained separately. Assess the existing pan, trim and fittings before arranging upholstery work.

Compare the lock as well as the hinge pin

The lock-with-keys product notes a mechanism that projects farther than the original. The separate lock bar replaces 77220-340-003 and 77220-340-011; the hinge pin replaces 77203-405-000. Compare those fitted components independently when the closure or hinge needs repair.

Common questions

Does the sewn-in foam layer replace the seat’s existing foam?

The listing describes a layer sewn into the cover’s top to smooth imperfections in the existing seat foam, not a complete replacement foam core. It includes cover-installation and damaged-foam repair instructions. Assess the original foam and pan before choosing upholstery alone for a broader seat repair.

Does the cover have a Honda stencil on the rear?

The description states there is no Honda stencil on the rear. That matters when choosing the finish for a restoration. Compare the product photograph and those stated details rather than assuming the original lettering is supplied with replacement upholstery.

Will the replacement seat lock use my existing ignition key?

The listing supplies a lock with its own keys but does not establish a matching code with the ignition or another lock. Confirm any same-key requirement before ordering. Compare the mounting and projection as well as the two listed replacement references.

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