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1983 Honda CB1000C Engine Covers, Gaskets & Screws

Cover parts for the 1983 Honda CB1000C center on the spark advancer cover: a chrome replacement, its rubber O-ring gasket and a set of three 6x25 screws. A starter motor cover gasket and a finned rocker cap listing complete the group.

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Currently viewing Engine Covers & Accessories

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Honda CB1100 CB1000 CB900 CB750 spark advancer cover gasket 30372-425-000

Honda CB1100 / CB1000 / CB900 / CB750 Spark Advancer Cover Gasket ~ Replaces 30372-425-000

$7.95 USD
18-7059
Replace your DOHC CB's spark advancer cover gasket with this Spark Advancer Cover Gasket (rubber O-ring), replacing OEM #30372-425-000.Key Features• Spark advancer cover gasket...
Honda CB1000 CB900 CB750 spark advancer cover screw set 93700-06025-0A

Honda CB1000 / CB900 / CB750 Spark Advancer Cover Screw Set ~ Replaces 93700-06025-0A

$3.50 USD
73-0900
Replace your spark advancer cover screws with this Spark Advancer Cover Screw Set of 3 in 6x25 size, replacing OEM #93700-06025-0A.Note: the 1980 bikes...
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Honda CB valve tappet cover rocker cap 12361-300-000

Honda CB Valve Tappet Cover / Rocker Cap ~ Replaces 12361-300-000

$6.95 USD
01-9980
Dress up your Honda's top end with this Valve Tappet Cover (Rocker Cap), an aftermarket finned chrome-plated replacement for OEM #12361-300-000. Fits an exceptionally...
Honda CB1100 CB1000 CB900 CB750 starter motor cover gasket 31282-425-300

Honda CB1100 / CB1000 / CB900 / CB750 Starter Motor Cover Gasket ~ Replaces Honda OEM 31282-425-300

$11.69 USD
18-7070
Starter Motor Cover Gasket ~ Replaces Honda OEM 31282-425-300 for the Honda CB models listed below. Use this part for repair, restoration, or replacement...
Honda CB1000 CB900 CB750 chrome spark advancer cover 30371-425-010

Honda CB1000 / CB900 / CB750 Chrome Spark Advancer Cover ~ Replaces 30371-425-010

$64.95 USD
73-0050
Replace a worn spark advancer cover with this Chrome Spark Advancer Cover, replacing OEM #30371-425-010. These covers are often dented, rusted, or worn; a...
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1983 Honda CB1000C · Engine Covers Buying guide

Refit the cover with sound seals and fasteners

The chrome spark-advancer cover, its rubber O-ring and its screws are separate items. Check the old cover for distortion and the threaded holes for damage before choosing replacement parts. A cosmetic cover change is also a chance to correct a damaged sealing surface or mismatched screw.

Cover parts to consider

Honda CB1000 / CB900 / CB750 Chrome Spark Advancer Cover ~ Replaces 30371-425-010 Chrome spark advancer coverReplacement chrome cover; the gasket is sold separately.View part Honda CB1100 / CB1000 / CB900 / CB750 Spark Advancer Cover Gasket ~ Replaces 30372-425-000 Spark advancer cover gasketRubber O-ring type that seals the cover to the case.View part Honda CB1000 / CB900 / CB750 Spark Advancer Cover Screw Set ~ Replaces 93700-06025-0A Spark advancer cover screwsSet of three 6x25 screws for the cover.View part

Related parts: Starter motor cover gasket

Match the three spark-advancer cover parts

Cover 30371-425-010, O-ring 30372-425-000 and screw reference 93700-06025-0A describe the separate cover, seal and 6 × 25mm fasteners. Choose the pieces the inspection calls for. Neither the screw set nor the new cover replaces worn internal ignition components.

Check other cover parts by their actual location

The starter motor cover uses the separately listed 31282-425-300 gasket. The finned 12361-300-000 cap is a small access-cap listing, not a complete valve cover; verify the matching opening before ordering. Keep cover bolts laid out by location so different lengths are not mixed during assembly.

Engine cover questions

Why might a new spark-advancer cover still leak?

A fresh cover cannot compensate for a damaged or displaced O-ring or a damaged mating face. Inspect those areas and fit the seal correctly before tightening evenly to Honda’s specification. Extra screw torque is not a repair for a distorted cover or damaged sealing surface.

Can a longer screw make a damaged cover mounting thread hold?

Do not substitute a longer screw by guesswork. It may bottom in the hole without clamping the cover. The listed spark-advancer screws are 6 × 25mm; verify the original fastener and have damaged threads assessed before refitting the cover.

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