1981 Honda CB900C Custom Signal Lens Service Parts
Compare the signal housing and lens seating area before ordering service parts for your 1981 CB900C Custom. The gasket and two-screw package suit the specified original-style lamp family. Inspect any aftermarket signals directly rather than transferring the original application to their different lenses or fasteners.
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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...
1981 Honda CB900C Custom · Signal Lens Service Parts Buying guide
Match the signal housing before renewing its seal
A lens gasket and correct screws can restore the joint on a sound original-style signal. Inspect the lens, housing and threaded points first; a new gasket will not seal a cracked lens or distorted flange.
The gasket replaces 33406-377-671 and is specified for the listed original-style lamp and lens family, including lamps 11-2114 and 11-2149 and lens 11-2195. The screw pair references 93500-04025-0A. Match those parts to the fitted signal rather than assuming every Honda lens uses them.
Restore a sound sealing joint
Clean the mating surfaces, seat the gasket evenly and tighten the correct screws without distorting the lens. If the threads are stripped or the lens is cracked, repair or replace the damaged component instead of tightening harder.
Practical questions
Will a new gasket stop moisture getting into a cracked lens?
No. Check the lens and housing as well as the gasket. A damaged lens, distorted flange or loose fastener can leave an entry path even with a new seal.
Do these lens parts fix a signal that does not flash?
They address sealing and retention. Check the bulb or lamp, connectors, wiring and flasher circuit for an operating fault; use the correct electrical parts for any modified signals.
Can the screws be used to pull a poorly fitting lens into place?
Do not force it. Confirm the matching lens and gasket, check that they seat flat, and inspect the housing threads. Excess force can crack the lens or damage the mounting points.
Not sure which part you need?
Send your model and year, plus photos of your existing part and any changes to the original setup.