The external ignition coil takes the low voltage output of the ignition system and steps it up into the high voltage pulse that fires the spark plug. On a Suzuki Eiger 400 or King Quad 400 a coil that has started to break down rarely fails outright at first. It shows up as hard starting, a spark that is present but weak, a misfire that appears under load or on hills, and an engine that cuts out once it is fully warm and then restarts after it has cooled. Because the symptoms track engine temperature, the fault is often chased through the carburettor before the coil is suspected.
This is a brand new aftermarket external ignition coil built as a direct replacement for the original unit. Once your own OEM spark plug cap has been unscrewed from the old coil and fitted to the new lead, the part becomes plug-and-play: it is a direct fit, it mounts in the factory position and the 150 mm leads reach the original connections, so no cutting, splicing or bracket modification is needed. The coil is wound on the highest grade lamination materials, and every unit is tested before it is shipped.
Key Features
- Brand new aftermarket external ignition coil, not a rewound or refurbished unit
- Direct replacement for the original coil on the Eiger 400 and King Quad 400
- Plug-and-play and direct fit once your OEM spark plug cap is re-installed
- Compact 49 x 34 x 25 mm body that mounts in the factory location
- Wound on the highest grade lamination materials
- Every unit is tested before it is shipped
- RMSTATOR part number RM06120
Technical Specs
| Specification |
Detail |
| Part number |
RM06120 |
| Component type |
External ignition coil |
| Width |
34 mm |
| Length |
49 mm |
| Height |
25 mm |
| Wire length |
150 mm |
| Primary resistance |
0.5 ohms |
| Secondary resistance |
3.4k ohms |
| Spark plug cap |
Not included - re-install your OEM cap |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model |
Years |
| Suzuki LT-F400F Eiger 400 |
2002-2010 |
| Suzuki LT-A400F King Quad 400 |
2002-2010 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 33410-41D20 |
Suzuki |
Frequently Asked Questions
Does this coil fit without modification?
Yes. It is a direct fit for the original unit on the LT-F400F Eiger and LT-A400F King Quad. The body measures 49 mm long, 34 mm wide and 25 mm high and the leads are 150 mm, so it sits in the factory location and reaches the original connections. No cutting, splicing or drilling is required.
What is included, and what do I need to transfer over?
The coil itself is supplied. The spark plug cap is not included, so you must unscrew the OEM cap from your old high tension lead and fit it to the new one. Once that cap is in place the part is plug-and-play. It is worth inspecting the cap while it is off, since a corroded or cracked cap will weaken the spark even with a healthy coil.
How do I know the old coil is the problem?
Typical symptoms are hard starting, a weak or intermittent spark, misfiring under load and cutting out once the engine reaches operating temperature. A multimeter check gives a clearer answer: the primary winding on this coil reads 0.5 ohms and the secondary 3.4k ohms. If your original unit reads open circuit or is far from those figures, the coil has failed.
How do I confirm it matches my machine?
Check the number moulded or stamped on the coil you are removing against 33410-41D20 in the cross reference table above. That is the Suzuki number this part replaces, and it is the most reliable check across the 2002-2010 span, because Suzuki used the same coil on both the Eiger and the King Quad.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
