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1972 Honda CB450K Lighting, Ignition & Starter Parts

Map your 1972 CB450K electrical repair to the connection or assembly that needs replacement. Headlight plugs and front switch wiring cover specific sections, while ignition and starter parts need different comparisons. Check retained equipment and battery chemistry before planning a wider order.

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Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

Honda CB750 CB550 CB500 CB450 CB400 rear brake light switch

Honda CB Rear Brake Light Switch

$10.33 USD
12-0008
Replace your rear brake light switch with this Rear Brake Light Stop Switch. Exceptionally broad fitment across the SOHC CB750 lineup and virtually the...
Honda CB750 CB550 CB500 CB450 headlight plug style 33130-300-003

Honda CB750 / CB550 / CB500 / CB450 Headlight Plug ~ OEM Style ~ Replaces 33130-300-003

$9.95 USD
73-0122
Replace your headlight plug with this OEM Style Headlight Plug, replacing OEM #33130-300-003.Key Features• Headlight plug, OEM style• Replaces OEM #33130-300-003• Honda part name:...
Honda CB1100 CB1000 starter motor terminal rubber boot 32411-230-000

Honda CB Starter Motor Terminal Rubber Boot ~ Replaces 32411-230-000

$4.61 USD
73-0092
Replace your starter motor terminal cover with this Starter Motor Terminal (Cover) Rubber Boot, replacing OEM #32411-230-000.Key Features• Starter motor terminal rubber boot• Replaces...
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 CB650 CB550 CB500 tail light cover gasket 33709-341-671

Honda CB Tail Light Cover Gasket ~ Replaces 33709-341-671

$5.80 USD
11-2163
Replace the gasket on your 1972-onward Honda's tail light lens with this Tail Light Lens Gasket, replacing OEM #33709-341-671. Matches the fitment of our...
Honda CB750 CB500 bar switch assembly left (clutch) side 35250-300-033

Honda CB Bar Switch Assembly ~ Left (Clutch) Side ~ Replaces 35250-300-033

$79.95 USD
12-0306
Fit left-side handlebar controls on your early SOHC CB with this Bar Switch Assembly for the Clutch Side in black, replacing OEM #35250-300-033. Wiring...
Honda CB750 CB550 front reflector rubber base 33743-341-670

Honda CB Stock Type Front Reflector Rubber Base ~ Replaces 33743-341-670

$8.95 USD
11-2304
Fit the rubber base beneath your stock front reflector with this Stock-Type Front Reflector Rubber Base, replacing OEM #33743-341-670.Key Features• Stock-type front reflector rubber...
Honda CB750 CB550 CB500 hydraulic stop light switch 35350-300-006

Honda CB Hydraulic Stop Light Switch ~ Replaces 35350-300-006

$24.95 USD
29-7021
Replace your hydraulic brake light switch with this Hydraulic Brake Light / Stop Switch, replacing OEM #35350-300-006 / #35350-300-016. 10mm x M1.25 thread.Key Features•...
New
Honda CB750 CB650 CB550 CB450 headlight setting collar 61304-292-000

Honda CB Headlight Setting Collar ~ Replaces 61304-292-000

$4.50 USD
07-4645
Restore headlight mounting with this Headlight Setting Collar, replacing OEM #61304-292-000. Exceptionally broad fitment across the classic Honda lineup, from the SOHC and DOHC...
Honda CB750 CB550 CB500 CB450 stock type headlight assembly bucket case 61301-300-020B

Honda CB750 / CB550 / CB500 / CB450 Stock Type Headlight Assembly Bucket / Case ~ Replaces 61301-300-020B

$49.95 USD
73-1143
Restore the classic look of your Honda with this Black Headlight Bucket / Case in the original stock design. A direct replacement for OEM...
Honda CB900 CB750 CB650 CB550 tail light cover screws 93500-04055-4J

Honda CB Tail Light Cover Screws ~ Replaces 93500-04055-4J

$4.69 USD
49-0145
Replace your tail light lens screws with this Tail Light Lens Screws Pack of 10, replacing OEM #93500-04055-4J.Key Features• Tail light lens screws• 10...
Honda CB1000 CB750 CB550 CB500 headlight assembly rim 33101-300-673

Honda CB Headlight Assembly Rim ~ Replaces 33101-300-673

$27.95 USD
09-0066
Replace a damaged or pitted headlamp rim with this Chrome Headlamp Rim, replacing OEM #33101-300-673 / #33101-405-671. Fits all 1969-78 CB750s, select late-model DOHC...
Honda CB750 CB550 CB500 CB450 headlight rim and retainer 33101-404-671

Honda CB750 / CB550 / CB500 / CB450 Headlight Rim & Retainer ~ Replaces 33101-404-671

$48.95 USD
09-0046
Restore your headlamp trim with this Headlamp Rim & Retainer Assembly, replacing OEM #33101-404-671 / #33121-300-672 / #33153-300-671. Fits the full 1969-78 SOHC CB750...
Honda CB750 CB550 CB500 CB450 starter solenoid relay 35850-375-000

Honda CB Starter Solenoid Relay ~ Replaces 35850-375-000

$38.95 USD
24-2003
Replace your late-'70s CB starter solenoid with this Starter Solenoid Relay, replacing OEM #35850-375-000 / #35850-286-027. Broad fitment across the late SOHC CB750, CB500T/CB550...
New
Honda CB750 CB550 CB500 CB450 headlight case collar 61302-300-000

Honda CB Headlight Case Collar ~ Replaces 61302-300-000

$4.95 USD
07-4644
Replace a worn headlight case collar with this Headlight Case Collar, a direct replacement for OEM #61302-300-000. Located on each side of the stock...
New
Honda CB starter motor seal 60 x 1.4 31206-286-158

Honda CB Starter Motor Seal 60 x 1.4 ~ Replaces 31206-286-158

$5.95 USD
03-0784
Seal up your starter motor with this Starter Motor Seal, size 60 x 1.4, replacing OEM #31206-286-158 / #31206-402-008. Exceptionally broad fitment across the...
Honda CB1100 CB1000 CB900 CB750 starter motor brush set 31201-292-158

Honda CB Starter Motor Brush Set ~ Replaces 31201-292-158

$29.95 USD
24-2021
Replace your Mitsuba 2-brush starter motor brushes with this Replacement Starter Brush Set of 2, 12mm x 14mm x 6mm, 1 piece with insulated...
Honda CB500 CB450 CB350 CL350K0 CL350K1 ignition coil 30500-292-672

Honda CB Ignition Coil ~ Replaces 30500-292-672

$37.95 USD
17-6923
Replace your CB450/CL450, CB500T, or CB350/CL350/SL350 ignition coil with this Ignition Coil, replacing OEM #30500-292-672 / #30500-312-000 / #30500-286-004 / #30500-286-007 / #30500-310-670. 12V...
Honda CB550 CB500 front brake light switch sub harness 35345-319-000

Honda CB Front Brake Light Switch Sub Harness ~ Replaces 35345-319-000

$7.00 USD
73-0104
Replace your front stop switch sub harness with this Front Stop / Brake Switch Sub Harness, replacing OEM #35345-319-000.Key Features• Front stop / brake...
Honda CB500 CB450 CB360 CB350 CL350K0 condenser 30250-369-004

Honda CB Condenser ~ Replaces 30250-369-004

$21.95 USD
26-5106
Replace your condenser with this Condenser, replacing OEM #30250-369-004 / #30280-292-672 / #30280-292-671.Key Features• Condenser• Replaces OEM #30250-369-004 / #30280-292-672 / #30280-292-671• Honda part...
Honda CB1000 CB900 headlight adjusting screw and spring set 33103-346-670

Honda CB Headlight Adjusting Screw & Spring Set ~ Replaces 33103-346-670

$7.50 USD
29-7011
Replace your headlight adjuster with this Headlight Adjusting Screw & Spring Set. Each set includes one screw and one spring. Replaces OEM #33103-346-670 (screw)...
New
Honda CB500 CB450 CL450K0 contact point right side 30203-292-003

Honda CB Contact Point ~ Right Side ~ Replaces 30203-292-003

$14.95 USD
14-0007
Replace the right-side contact point on your CB500T or CB450/CL450 with this Contact Point for the Right Side, replacing OEM #30203-292-003 / #30203-292-154.Key Features•...
New
Honda CB500 CB450 CB160 CL450K0 contact point left side 30204-292-003

Honda CB Contact Point ~ Left Side ~ Replaces 30204-292-003

$14.95 USD
14-0008
Match with the left-side contact point using this Contact Point for the Left Side, replacing OEM #30204-292-003 / #30204-292-154. Same fitment as 14-0007 plus...
Honda CB750 CB500 CB450 CB400 turn signal lamp gasket 33443-268-671

Honda CB Turn Signal Lamp Gasket ~ Replaces 33443-268-671

$4.61 USD
11-2085
Service your early CB750 or classic twin turn signal with this Turn Signal Lamp Gasket, replacing OEM #33443-268-671. Pairs with our signal lens #11-2110...
New
Honda CB500 CB450 CB360 CB350 CL350K0 rectifier 31700-455-671

Honda CB Rectifier ~ Replaces 31700-455-671

$22.95 USD
24-2078
Replace your CB350, CB360, CB450, or CB500T rectifier with this Rectifier with female connector, replacing OEM #31700-455-671 / #31700-358-305 / #31700-358-013 / #31700-292-008 /...
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Honda CB750 CB550 CB500 CB450 stock type headlight assembly 33100-341-701

Honda CB750 / CB550 / CB500 / CB450 Stock Type Headlight Assembly ~ Replaces 33100-341-701

$199.95 USD
08-0461
Restore the classic look of your Honda with this Stock Style Headlight Assembly. Features 7" Halogen Headlight Unit, Headlight Rim & Retainer, Plastic Headlight...
New
Honda CB450K SL350K0 right-side bar switch assembly (brake) 35300-319-670

1970-72 Honda CB450K / SL350K0 Right-Side Bar Switch Assembly (Brake) ~ Replaces 35300-319-670

$69.95 USD
99-5005
Upgrade or restore your classic Honda motorcycle with this Right‑Side Bar Switch Assembly — a high‑quality replacement for the factory brake side switch. This...
Honda CB750 CB550 CB450 CB350 CB360 tail light bracket 84701-341-670

Honda CB Tail Light Bracket ~ Replaces 84701-341-670

$124.95 USD
02-1233
Restore a proper tail end on your classic Honda with this Chrome Tail Light Bracket, replacing OEM #84701-341-670 / #84701-371-980. Fits a wide range...
Universal motorcycle spark plug cap VB05F

Universal Motorcycle Spark Plug Cap ~ VB05F

$9.50 USD
23-3124
Universal Motorcycle Spark Plug Cap ~ VB05F is an aftermarket part for the Honda CB applications listed in this product information. Before ordering, confirm...
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Honda CB750K CB500K CB450K tail light cover screws 93500-04050-4J

1969-72 Honda CB750K / CB500K / CB450K Tail Light Cover Screws ~ Replaces 93500-04050-4J

$3.42 USD
49-0144
Replace your tail light lens screws with this Tail Light Lens Screws Pack of 10, replacing OEM #93500-04050-4J.Key Features• Tail light lens screws• 10...
Honda CB500T CB450 CB200 CB175 starter battery cable 32401-319-010

Starter Battery Cable ~ Replaces Honda OEM 32401-319-010

$21.95 USD
24-6025
This aftermarket starter battery cable replaces Honda OEM 32401-319-010 on the listed Honda CB applications. This cable connects the starter/battery circuit and helps carry...
Honda CB500 CB450 spark plug cap YB05F

Honda CB500/CB450 Spark Plug Cap ~ YB05F

$10.95 USD
23-3120
Spark Plug Cap - YB05F for custom or restoration work on classic Honda CB motorcycles.  Key Features Aftermarket part Sold as: Each Fitment /...
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New
Honda CB750 CB450 CL450K1 CL450K2 rear turn signal stay 33607-292-000

Honda CB Rear Turn Signal Stay ~ Genuine Honda 33607-292-000 ~ Replaces 33607-292-000

$59.95 USD
99-5164
This genuine Honda rear turn signal stay mounts the rear turn signal to the motorcycle frame and helps keep the signal straight, secure, and...
New
Honda CB500 CB450 CB360 hot shot rectifier regulator 31400-292-670

Honda CB Hot Shot Rectifier / Regulator ~ Replaces 31400-292-670

$189.95 USD
24-2089
Upgrade your charging system with this Rick's Electric Hot Shot Rectifier/Regulator, replacing OEM #31400-292-670 / #31700-455-671 / #31700-292-008. Combination unit works with the stock...
New
Honda CB450 CL450K3 performance charging kit lithium ion version

Honda CB Performance Charging Kit ~ Lithium Ion Version

$499.95 USD
24-2023
Upgrade your CB450 or CL450 charging system with Rick's Electric High Performance Hot Shot Lithium Ion Charging Kit. Includes a new rotor and a...
New
Honda CB450 CL450K3 CL450K4 CL450K5 CL450K6 performance charging kit

Honda CB Performance Charging Kit

$499.95 USD
24-2026
Upgrade your CB450 or CL450 charging system with Rick's Electric High Performance Hot Shot Charging Kit for standard lead-acid batteries. Includes a new rotor...
Honda CB500 CB450 hot shot rectifier regulator lithium ion battery

Honda CB Hot Shot Rectifier/Regulator ~ Lithium Ion Battery Compatible

$169.95 USD
24-2014
Upgrade your CB450, CB500T, CB350, CB360, or small classic with Rick's Electric Hot Shot Lithium Ion Rectifier/Regulator. This combination unit works with the stock...
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1972 Honda CB450K · Electrical Buying guide

Identify the connection and what the purchase renews

The headlight plug and front brake-switch sub-harness have separate Honda references. Starter brushes specify their motor design and dimensions. Coil and charging choices provide other electrical requirements, so a shared motorcycle application does not replace checks at the equipment actually fitted.

Parts to consider

Honda CB750 / CB550 / CB500 / CB450 Headlight Plug ~ OEM Style ~ Replaces 33130-300-003 OEM-style headlight wiring plugHeadlight plug referencing Honda 33130-300-003, listed for the 1972 CB450K. Compare the lamp connection and retained wiring. Its description does not supply a full terminal drawing or a complete replacement loom.View part Honda CB Front Brake Light Switch Sub Harness ~ Replaces 35345-319-000 Front stop-switch wiring sectionSub-harness referencing Honda 35345-319-000 for front brake-switch wiring. Compare the switch end, loom end and required route; no main harness or stop switch is itemized as supplied.View part Honda CB Starter Motor Brush Set ~ Replaces 31201-292-158 Brush pair for a Mitsuba starterTwo 12 × 14 × 6mm brushes for Mitsuba two-brush starters, with one insulated and one non-insulated lead arrangement. References Honda 31201-292-158 / 31201-MG9-004. Check the starter retained on the motorcycle.View part

Related parts: Single-output ignition coil and lead checks · Lithium-only charging control · Left control with external wire routing

Plan lighting hardware alongside the wiring connection

A headlight plug repairs the connection, while a bucket, rim or complete assembly addresses the lamp structure. The stock-type assembly’s CB450K note calls for reuse of the old headlight mounting bolts. Inspect the retained supports and fasteners before assuming that a wiring repair or assembled lamp covers every mounting requirement.

Choose the charging version for the installed battery

The lithium combination control specifies 14V ±0.2 and excludes standard lead-acid batteries. Confirm the set point against the lithium battery’s requirements. Lead-acid controls and rotor kits have their own battery restriction; match the version across the order rather than selecting solely from its motorcycle application.

Planning connected electrical repairs

What if the headlight connector has been replaced before?

Compare the lamp-side termination and retained wiring with the OEM-style plug. The listing gives reference 33130-300-003 but no full terminal dimensions or pin drawing. Confirm the needed connection details when the fitted lamp or wiring differs from the original arrangement.

How do I identify the brush set for a replacement starter motor?

Check the motor design, removed brush dimensions and lead arrangement directly. This set is specified for Mitsuba two-brush starters at 12 × 14 × 6mm. The motorcycle year cannot identify a different starter fitted during earlier repairs.

What needs checking when replacing a beige Honda ignition coil?

The replacement coil’s description requires reversed mounting because its leads exit differently. Compare the approximately 80mm mounting centres, attached wire paths and connectors together. Its 12V single-output and 5-ohm primary ratings also need to suit the ignition being retained.

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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