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1971 Honda CB500K Starter & Charging Parts

A 1971 Honda CB500K that will not crank needs different checks from one that does not charge. This selection includes a starter relay, starter brush set, seals and combined rectifier/regulators. Identify the affected system and the fitted battery before choosing replacement equipment.

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Currently viewing Starter & Charging System

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Honda CB750 CB550 CB500 CB350 starter solenoid relay 35850-371-670

Honda CB Starter Solenoid Relay ~ Replaces 35850-371-670

$21.46 USD
09-6582
Replace a failing starter solenoid with this Starter Solenoid Relay, replacing OEM #35850-371-670 / #35850-306-670 / #35850-HA7-670. Fits the SOHC CB750 lineup plus CB500/CB550K,...
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...
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Honda CB750 CB550 CB500 CB400 CB350 rectifier regulator

Honda CB Rectifier/Regulator

$199.95 USD
24-2109
Replace your SOHC CB regulator and rectifier with this Rick's Electric OEM-Style Rectifier/Regulator. Combination unit replaces the OEM regulator and rectifier; stock-type plugs and...
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Honda CB750 CB550 rectifier regulator lithium ion battery compatible

Honda CB Rectifier/Regulator ~ Lithium Ion Battery Compatible

$199.95 USD
24-2011
Upgrade to a lithium-ion compatible charging regulator with this Rick's Electric Rectifier/Regulator. Designed with a lower voltage set point to work exclusively with lithium-ion...
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...
New
Honda CB starter motor seal 24.4 x 3.1 91312-MG7-003

Honda CB Starter Motor Seal 24.4 x 3.1 ~ Replaces 91312-MG7-003

$4.50 USD
03-0780
Seal up your starter motor with this Starter Motor Seal, size 24.4 x 3.1, replacing OEM #91312-MG7-003 / #91309-300-000 / #91309-425-003. Exceptionally wide fitment...
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...
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Honda CB550F CB550K CB500K alternator cover gasket 11691-323-306

1971-78 Honda CB550F / CB550K / CB500K Alternator Cover Gasket ~ Replaces 11691-323-306

$9.86 USD
18-6999
Replace your CB500K or CB550 alternator cover gasket with this Alternator Cover Gasket, replacing OEM #11691-323-306.Key Features• Alternator cover gasket• Replaces OEM #11691-323-306• Honda...
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1971 Honda CB500K · Starter & Charging Buying guide

Separate starter repairs from charging repairs

The starter relay operates the starting circuit, while the brush set services a compatible starter motor. Combined rectifier/regulators address charging equipment. Their functions and fitment checks differ; use the fault and installed component to guide the purchase.

Parts to consider

Honda CB Starter Solenoid Relay ~ Replaces 35850-371-670 Starter solenoid relayA starting-circuit relay cross-referenced to Honda 35850-371-670, 35850-306-670 and 35850-HA7-670. Check the relay and cable connections against the installed arrangement.View part Honda CB Starter Motor Brush Set ~ Replaces 31201-292-158 Mitsuba two-brush starter setIncludes two 12 x 14 x 6 mm brushes, one with insulated leads and one with non-insulated leads. Intended for the listed Mitsuba two-brush starter.View part Honda CB Rectifier/Regulator Combined rectifier/regulatorRick's unit combines the regulator and rectifier functions. It measures 68 x 94 x 26 mm with 80 mm mounting-hole centres; custom mounting may be required.View part

Related parts: Lithium-ion-only rectifier/regulator

Confirm the starter design before buying internal parts

The featured brush set is specifically for a Mitsuba two-brush starter and contains one brush with insulated leads and one with non-insulated leads. Compare the motor and worn brushes before ordering. The relay is separate equipment and does not service the motor’s internal brushes or seals.

Choose a regulator for the battery actually installed

The lithium-ion-compatible regulator is explicitly not for standard lead-acid batteries. Confirm its charging requirements against the battery manufacturer’s specifications. The regular and lithium-specific units also have stated dimensions and mounting spacing; neither listing is a promise that every mounting location will fit without adaptation.

Questions about starter & charging

What does the starter brush set contain?

It contains two 12 x 14 x 6 mm brushes: one with insulated leads and one with non-insulated leads. Confirm that the installed starter is the listed Mitsuba two-brush type before ordering the set.

What dimensions should I compare for the regular combined regulator?

Allow for a 68 x 94 x 26 mm body and mounting holes 80 mm centre to centre. The unit replaces regulator and rectifier functions together, with stock-type plugs, but its listing allows for custom mounting.

Can the lithium-specific regulator be used with a lead-acid battery?

No. Its listing specifies lithium-ion batteries only and excludes standard lead-acid batteries. The stated set point is 14.0 V ±0.2. Confirm that charging requirement with the battery manufacturer before choosing the unit for your installed battery.

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