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12v Ignition Coil Classic Bikes 21121-051 21121-053 168-82310-70 14716502

£30.60Includes 20% VAT
In Stock
Pack size: Each
SKU: 005124

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12v Ignition Coil Classic Bikes 21121-051 21121-053 168-82310-70 14716502

  • Suitable for British Bikes & Classic Japs
  • 12v ignition coil for contact breaker points ignition system
  • 2 terminals
  • Body length: 95mm
  • Total length: 105mm
  • Outer diameter: 41mm
  • Single HT lead type (not included)
  • Suitable HT lead - SKU: 005076
  • Primary resistance: 5.0Ω
  • Secondary resistance: 11.50kΩ

Replacement aftermarket part for the following OEM numbers:

  • Kawasaki 21121-051, 21121-052, 21121-053
  • Piaggio Group GU14716500, GU14716501, GU14716502, 00014716500, 00014716501, 00014716502, 14716500, 14716501, 14716502
  • Yamaha 168-82310-70-00
  • and many more TBA

This will suit the following models as well as those listed in fitments:

  • Yamaha AS1 1967
  • Yamaha AS1C 1968
  • Yamaha AS2C 1969-70
  • Yamaha CS2 1968
  • Yamaha CS3 1970-71
  • Yamaha YCS1 967-68
  • Yamaha YCS1C 1968-69
  • Yamaha YDS5 1967
  • Yamaha YDS6 1969-70
  • Yamaha YL1 1966
  • Yamaha YL1E 1967
  • Yamaha YR1 1967
  • Yamaha R2 1968
  • Yamaha YR3 1969

If your coil has two wires (primary) and it's not obvious to which way these are connected, do not worry as all our coils are made to fit either way.
Each of the wires are connected to the same coil of wire inside the body of the coil just at opposite ends so it does not matter which way round you connect them.
If you've been told otherwise as plenty of 'experts' will disagree with the above then this is the way to ensure you have the two (primary) wires the correct way round.

Test by hooking up a voltmeter with the negative lead to inside the spark plug cap or HT lead so it's touching metal/carbon inner and the positive lead to a grounding/earth point such as the engine block. Set the meter to the highest voltage and crank the engine over (no need to start it) which should show an upward reading of the voltmeter needle (don't be concerned with the reading). If the needle swings down off the scale, switch round the coil primary wires.

Replacement ignition coils may give resistance readings that are different to genuine ones or from what it may state in your user manual (which are known to be incorrect at times) but this will not always mean a fault. If you need to check a coil look for readings that remain stable, normal rates could read anything between 0.6 and 5.0 ohms (The higher reading typical for classics) for the primary and 6k to 14k ohms (The lower reading typical for classics) for the secondary. Only when ohms readings vary significantly or have no reading the coil can then be classed as faulty. All the secondary resistance does is change the length of time the plug sparks for, so a higher resistance literally just makes the spark stay for longer and we are talking milliseconds.

Before You Place Your Order...
  1. Note the image may not be exactly as item received and any slight difference will not be inferior or effect performance
  2. Check the fitment list to ensure this item will fit your vehicle
  3. When we refer to right or left, this is as you sit on your vehicle
  4. To find part by SKU, enter the number without "SKU" into the search box
  5. Products containing any fluid or hazardous materials, aerosols, batteries including large lithium jump starters cannot be shipped overseas due to courier restrictions although we can ship UK offshore and Scottish Highlands at higher shipping rates
  6. EU customers should check with your countries customs office to determine what additional costs such as tax or Import duties will be prior to purchasing. These charges are normally collected by the delivery company or when you pick the item up, they are not included in the item price or shipping charge on this website

All parts and accessories are brand new and include VAT where applicable.
Most parts are pattern or aftermarket although some will be genuine but are not always stated as being so.
The use of motorcycle manufacturers' names is for reference purposes only. We do not imply that the products we sell are made by or with the permission of the names listed.

H1 500 Mach III 1969-75
KH250 Triple 1976
KH400 A Triple 1976-78
KH500 A/B Triple 1976
S1 (250cc) Mach I 1973-75
S2 (350cc) Mach II 1972-73
S3 (400cc) Mach II 1974-75
1000 S 1989-94
1000 SP 1979-83
1000 SP II 1983-88
850 Le Mans III 1981-84
850 T3 1975-85
850 T3 California 1979-81
850 T5 1985-87
850 T5 Polizia 1985-89
California 1000 II 1983-86
California 1000 III 1987-93
Le Mans 1000 IV 1984-87
Le Mans 1000 NT 1991-92
Le Mans 1000 V 1988-90
Le Mans CX 100 1978-81
Mille GT1000 1987-91
Strada 1000 1993-94
YDS-6 (250cc) 1969-70

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