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1981 Honda CB750K Ignition Coils, Plugs & Switch Parts

Coil shopping for the 1981 CB750K includes a replacement with separately sold high-tension wires and a Rick’s option supplied with wires attached. Standard NGK plugs and key-switch service pieces are also listed. Compare the installed ignition equipment and each package before choosing.

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Currently viewing Ignition Systems, Ignition Switch, Coils, Plugs, Contact Points

Honda motorcycle parts

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

Honda CB750 NGK D8EA spark plug

Honda CB750 NGK D8EA Spark Plug

$9.94 USD
50-8600
Replace your CB750 spark plugs with these NGK D8EA Spark Plugs, the standard original CB750 spark plug.4 required per CB750.Key Features• NGK D8EA spark...
Honda CB1000 CB900 CB750 CB700 spark plug cap SD05F

Honda CB750 Spark Plug Cap – SD05F

$10.49 USD
23-3115
Replace your spark plug caps with this Spark Plug Cap, SD05F type. Two required per CB750.Key Features• Spark plug cap, SD05F• 2 required per...
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Honda CB900 CB750 CB650 CB550 CB400 ignition switch 35010-377-007

Honda CB Ignition Switch ~ Replaces 35010-377-007

$46.98 $44.95 USD
You save $2.03
12-0051
Restore a late-'70s or DOHC-era CB's ignition with this Ignition Switch with fork lock and keys, replacing OEM #35010-377-007 / #35100-377-003/007 / #35100-422-017 /...
Honda CB900 CB750 CB650 CB550 switch repair kit

Honda CB900/CB750/CB650/CB550 Switch Repair Kit

$14.95 USD
12-0064
Rebuild your Honda ignition switch base with this Switch Repair Kit, including the base cover. Designed for use with our #12-0051 ignition switch (sold...
Honda CB1100 CB1000 CB900 CB750 CB650 spark plug cap XD05F

Honda CB Spark Plug Cap ~ XD05F

$10.49 USD
23-3119
Replace your spark plug caps with this Spark Plug Cap, XD05F type. Two required per CB750. Key Features• Spark plug cap, XD05F• 2 required...
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 CB1100 CB1000 CB900 CB750 CB700 ignition coil 30500-422-003

Honda CB Ignition Coil ~ Replaces 30500-422-003

$64.95 USD
17-6803
Replace your DOHC CB's ignition coil with this Replacement Ignition Coil, replacing OEM #30500-422-003 / #30500-422-013. Broad fitment across the 1979-82 CB750 family, CB750SC/CB700SC...
Honda CB1100 CB1000 CB900 CB750 NGK DR8EIX iridium spark plug

Honda CB1100 / CB1000 / CB900 / CB750 NGK DR8EIX Iridium Spark Plug

$24.95 USD
50-8605
Upgrade to iridium with these NGK DR8EIX Iridium Spark Plugs. The cheapest horsepower you can buy for your CB. Adds a solid 1-2 HP...
Dynatek 3 ohm ignition coil set 2 with plug wires Honda CB

Dynatek Performance 3 Ohm Ignition Coil Set/2 with Plug Wires

$389.00 USD
07-9974
Combine Dynatek's performance coils with matching plug wires in one package using this Dynatek Performance Dual-Output 3 Ohm Ignition Coil Set of 2 with...
Honda CB900 CB750 CB650 CB550 switch base cover

Honda CB900/CB750/CB650/CB550 Switch Base Cover

$4.95 USD
12-0065
Replace just the base cover on your Honda ignition switch with this Switch Base Cover. Designed for our #12-0051 ignition switch (sold separately) with...
Honda CB1100 CB1000 CB900 CB750 replacement coil tower boots

Honda CB1100 / CB1000 / CB900 / CB750 Replacement Coil Tower Boots

$4.95 USD
17-6830
Replace the tower boots on your performance coils with this Coil Tower Boots 2-pack. Fits performance coils #17-6810, #07-9973, #07-9979, and #07-9980.Key Features• Coil...
Dynatek 3 ohm ignition coil set 2 Honda CB

Dynatek Performance 3 Ohm Ignition Coil Set/2

$289.00 USD
07-9980
Match your Dyna-style electronic ignition requirement with this Dynatek Performance Dual-Output 3 Ohm Ignition Coil Set of 2. Same Dynatek quality as the 5...
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Honda CB1100 CB1000 CB900 CB750 ignition spark units 30400-MA4-601

Honda CB Ignition Spark Units ~ Replaces 30400-MA4-601

$219.00 USD
14-0504
Replace your DOHC CB's factory ignition spark units with this Aftermarket Ignition Spark Unit, an affordable alternative to the Honda OKI or NEC units....
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Honda CB1100 CB1000 rick's electrics brand ignition coil 30500-422-003

Honda CB Rick's Electrics Brand ~ Ignition Coil ~ Replaces 30500-422-003

$119.95 USD
24-6011
Replace your DOHC CB ignition coil with this Rick's Electric Replacement Ignition Coil, replacing OEM #30500-422-003 / #30500-422-013. Comes with wires attached.Two coils used...
Honda CB750 DOHC CB900 CB1100 dynatek dyna 2000 ultimate kit

1979-83 Honda CB750 DOHC / CB900 Dynatek Dyna 2000 Ultimate Kit

$999.00 USD
07-9989
Go all-in on the DOHC CB750, CB900, or CB1100 with this Dyna 2000 Digital Performance CDI Ignition Ultimate Kit. Includes the Dyna 2000 ignition...
Honda CB750 DOHC CB900 dynatek dyna 2000 ignition system

1979-83 Honda CB750 DOHC / CB900 Dynatek Dyna 2000 Ignition System

$795.00 USD
07-9991
Get just the digital ignition module for your DOHC CB with this Dyna 2000 Digital Performance CDI Ignition. No coils, no wires, just the...
Honda CB1100 CB900 CB750 performance high output 3.3 ohm coil

Honda CB1100 / CB900 / CB750 Performance High Output 3.3 Ohm Coil

$119.95 USD
17-6810
Upgrade your CB750 or big-bore DOHC CB with this Performance Dual Output Ignition Coil, a 3.3 Ohm dual-tower type with hardware. Replaces stock factory...
Honda CB750 CB900 CB1100 performance 5.2 ohm ignition coil

Honda CB Performance 5.2 Ohm Dual-Output Ignition Coil

$129.95 USD
07-9973
Step up your ignition with this Performance High Output 5.2 Ohm Dual-Output Ignition Coil. Primary resistance of 5.2 Ohm, secondary of 17K Ohm, designed...
Honda CB1100 CB900 CB750 coil high tension wire ends (pk 2)

Honda CB1100 / CB900 / CB750 Coil High Tension Wire Ends (Pk/2)

$3.50 USD
17-6831
Replace the high-tension wire ends that fit inside your coil towers with this 2-pack of Coil High-Tension Lead Ends. Same fitment as our tower...
Honda CB750 DOHC CB900 CB1100 dynatek dyna 2000 premium kit

1979-83 Honda CB750 DOHC / CB900 Dynatek Dyna 2000 Premium Kit

$899.00 USD
07-9990
Upgrade your DOHC CB with the digital Dyna 2000 ignition in a middle-tier kit configuration. This Dyna 2000 Digital Performance CDI Ignition Premium Kit...
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1981 Honda CB750K · Ignition Systems, Ignition Switch, Coils, Plugs, Contact Points Buying guide

Compare coil wire contents as carefully as the replacement reference

The two featured coil listings share stated Honda replacement references but differ in their wire contents. The standard plug listing provides a specific NGK type. Those details help build a more deliberate ignition-service order.

Parts to consider

Honda CB Ignition Coil ~ Replaces 30500-422-003 Replacement coil, wires separateCoil replacing Honda 30500-422-003 and 30500-422-013. Its description says high-tension wires are sold separately and two coils are used per bike.View part Honda CB Rick's Electrics Brand ~ Ignition Coil ~ Replaces 30500-422-003 Rick’s ignition coil with wiresReplacement coil with wires attached, listed against Honda 30500-422-003 and 30500-422-013. Check the purchase quantity; the listing states two coils used per bike.View part Honda CB750 NGK D8EA Spark Plug NGK D8EA standard spark plugD8EA plug listed for the 1981 CB750K. The description identifies it as the standard CB750 plug and states four required per CB750.View part

Related parts: Key switch with fork lock and keys · Base repair kit for the listed key switch

Choose the coil package around the leads you need

The plain replacement coil excludes the separately sold high-tension wires, while the Rick’s coil is described with wires attached. Both descriptions state two coils used per bike. Compare what you intend to retain before choosing the package, and set the order quantity from the actual parts being replaced.

Identify the key-switch job separately from engine ignition service

The key switch has a fork lock and keys. The separate base repair kit includes its cover and is specifically described for the listed ignition switch, reference 12-0051. Match that pairing before ordering; coils for an aftermarket ignition conversion still need to meet the conversion’s instructions and specifications.

Common questions

Which featured coil is supplied with wires attached?

The Rick’s replacement coil description says it comes with wires attached. The other featured coil states that high-tension wires are sold separately. Compare those contents with the leads already fitted before choosing the replacement package.

Does a two-coils-per-bike note mean one listing supplies both?

The coil descriptions state two used per bike and ask buyers to order the quantity needed. Use that usage note to set the purchase quantity; do not assume it describes a boxed pair or a complete ignition kit.

Which standard spark-plug type is identified for this model?

The selected standard plug listing identifies NGK D8EA and includes the 1981 CB750K in its fitment. Its description states four required per CB750. Compare the plug identification and the work planned before setting the order quantity.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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