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1977 Honda CB550F Seat Locks

Inspect the seat latch and lock bracket on your 1977 Honda CB550F before buying a replacement lock. The offered unit comes with keys and projects slightly farther than the original. Compare alignment and clearance, particularly where a custom seat or earlier repair changed the mounting.

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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...
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1977 Honda CB550F · Seat Locks Buying guide

Check the latch and bracket before replacing the lock

A failed lock and a misaligned seat latch are different faults. Identify which component needs attention, then compare the replacement’s mounting and projecting mechanism with the space available around the fitted seat before ordering.

Parts to consider

Honda CB Seat Lock with Keys ~ Replaces 77230-399-007 Replacement seat lock with keysReferences 77230-399-007 / 77230-107-711; mechanism projects slightly farther than the original.View part

Identify the fault across the complete seat connection

The replacement lock cannot correct a bent bracket or a misplaced latch. Inspect those components along with the locking mechanism before choosing parts. Its mechanism projects slightly farther than the OEM type, so compare clearance around the fitted seat and mounts rather than assuming any changed arrangement retains the original space.

Plan access and the supplied key arrangement

Replacing a lock after losing the old key can require removal of its bracket and assembly. Check access and follow the appropriate service instructions before starting the repair. The supplied keys operate the replacement seat lock; the listing does not promise a matching key for the ignition or other motorcycle locks.

Common buying questions

Are matching ignition keys included with this seat lock?

The supplied keys belong to the replacement seat lock, with no stated matching-key arrangement for the ignition. Plan the new lock around its provided keys rather than assuming the motorcycle’s other locks will share them.

Will it fit a custom seat mounting without a clearance check?

Compare the bracket, latch position and available space first. The replacement mechanism projects slightly farther than the original, and a changed seat can alter those relationships. A model application does not establish every custom mounting clearance.

What should I inspect when the seat will not latch shut?

Check the bracket and mating latch for alignment, distortion or altered mounting before blaming the lock. Identify the failed component, then choose a replacement that addresses it instead of expecting a new lock to correct a misplaced latch.

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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