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1978 Honda CB550K Turn Signals & Reflectors

The 1978 Honda CB550K signal and reflector section includes complete lamps, lens service parts and mounting pieces. Check where the damage lies before choosing: a lamp gasket fits the lens joint, rear-stay rubbers fit the support, and a reflector is a separate item.

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Currently viewing Turn Signal Lamps, Stems, Lenses & Reflectors

Honda motorcycle parts

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Honda CB750 CB550 CB500 CB450 CB400 reflector 33741-340-670

Honda CB Stock Type Reflector ~ Replaces 33741-340-670

$21.46 USD
11-2303
Restore your mid-'70s Honda's stock reflectors with this Stock-Type Screw-On Reflector with a 6mm thread, replacing OEM #33741-340-670. Broad fitment covering the 1972-78 CB750...
New
Honda CB750 CB550 CB500 CB400 headlight stay headlight reflector bolt 90120-377-000

Honda CB750 / CB550 / CB500 / CB400 Headlight Stay / Headlight Reflector Bolt ~ Replaces 90120-377-000

$8.95 USD
99-4977
Upgrade or restore your classic Honda motorcycle headlight system with this Headlight Stay / Headlight Reflector Bolt — designed to secure the headlight reflector...
New
Honda CB750 CB550 CB500 headlight reflector rubber base 33743-375-000

Honda CB750 / CB550 / CB500 Headlight Reflector Rubber Base ~ Replaces 33743-375-000

$12.95 USD
99-4976
Replacement rubber base for restoring your CB750's headlight assembly back to proper condition. This is the rubber mount that the headlight reflector attaches to...
Honda CB900 CB750 CB650 CB550 turn signal lamp gasket 33406-377-671

Honda CB Turn Signal Lamp Gasket ~ Replaces 33406-377-671

$4.61 USD
11-2084
Replace the gasket on your turn signal with this Turn Signal Lamp Gasket, replacing OEM #33406-377-671. Pairs with our signal lamps #11-2114 and #11-2149...
Honda CB900 CB750 CB650 turn signal lamp lens screw set 93500-04025-0A

Honda CB Turn Signal Lamp Lens Screw Set ~ Replaces 93500-04025-0A

$2.95 USD
73-1034
Replace your turn signal lens screws with this Turn Signal Lamp Lens Screw Set of 2, replacing OEM #93500-04025-0A.Note: also fits our signal lens...
Honda CB750 CB550 CB450 CB400 rear turn signal rubbers pk 2 33606-371-000

Honda CB750 / CB550 / CB450 / CB400 Rear Turn Signal Rubbers Pk/2 ~ Replaces 33606-371-000

$15.95 USD
73-0834
Replace your rear turn signal rubbers with this Rear Turn Signal Rubbers Pk/2, replacing OEM #33606-371-000. These are the rubbers that go under the...
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1978 Honda CB550K · Turn Signal Lamps, Stems, Lenses & Reflectors Buying guide

Match the repair part to the lamp joint or mounting point

Signal lenses, lamp gaskets, rear-stay rubbers and passive reflectors are distinct purchases. Identify the installed housing and support before mixing small parts from otherwise similar-looking lighting assemblies.

Parts to consider

Honda CB Turn Signal Lamp Gasket ~ Replaces 33406-377-671 Turn-signal lamp gasketA lens-joint gasket referencing 33406-377-671. The listing names its matching signal-lamp and lens products; compare that housing shape with the fitted lamp.View part Honda CB750 / CB550 / CB450 / CB400 Rear Turn Signal Rubbers Pk/2 ~ Replaces 33606-371-000 Rear signal-stay rubbersA pack of two rubbers for the rear signal stays. The description specifies two rubbers per rear signal and lists CB550K 1977–78.View part Honda CB Stock Type Reflector ~ Replaces 33741-340-670 Stock-type screw-on reflectorA separate reflector with a stated 6mm thread. Compare the installed mount and required reflector position; a reflector does not replace a wired turn-signal lamp.View part

Related parts: Signal-lens screw set of two · Headlight-side reflector rubber · Reflector and headlight-stay bolt

Order rubbers by the support being repaired

The rear signal rubber listing supplies two pieces and states that each rear signal uses two. Compare the actual stays before deciding your order quantity, particularly on altered rear lighting. The separate headlight-side reflector rubber belongs to a different mounting location and should not be substituted by appearance.

Keep reflector hardware separate from lamp parts

The stock-type reflector has a stated 6mm thread, while its base rubber and mounting bolt are separate listings. A signal lens gasket and screw set address the lamp housing instead. Compare the retained pieces and mounting arrangement so that the repair order covers the correct location.

Common buying questions

Does one rear rubber pack service both signals?

The listing supplies two rubbers and specifies two per rear signal. Use that stated quantity together with the supports actually fitted; do not assume one pack covers both rear signals on the motorcycle.

How many signal-lens screws are in the set?

The signal-lens screw listing explicitly states a set of two. It also names matching lamp and lens products. Compare the existing housing before ordering, especially if an earlier owner installed different signals.

Are reflectors and turn-signal lamps interchangeable?

They serve different parts of the lighting arrangement. The listed reflector is a separate screw-on item with a stated 6mm thread; it is not an electrical lamp, lens or complete signal assembly.

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