ThunderSpark 921-2174 ignition coil for the 2010-2013 Mazda 3 4-cylinder 2.3L and other vehicles sends a high-voltage pulse to the spark plug when the engine control computer signals it. That spark ignites the fuel-air mixture in the cylinder.
- High-dielectric epoxy, copper windings and a heat-resistant housing for engine-bay heat and electrical load
- Ignition coil that is not oil filled and requires no external resistor
- 12-volt coil for distributorless ignition systems
- Three spade terminals with a female connector
Quick facts
- Part: ThunderSpark 921-2174 ignition coil
- Fits: 2010-2013 Mazda 3 4-cylinder 2.3L and other vehicles
- Condition: New
A weak coil can show up as a misfire, a rough idle or hard starting. Worn spark plugs, a damaged connector or a fuel-delivery problem can be behind those signs too, so find the cause before you buy a coil.
Fits
ThunderSpark ignition coils are made as OE replacements, and this one fits the 2010-2013 Mazda 3 4-cylinder 2.3L, the 2008-2010 Mazda 5 4-cylinder 2.3L and the 2012-2015 Mazda 5 4-cylinder 2.5L.
Specifications
Fit and size
- Quantity per vehicle: 4
- Voltage: 12 V
- Ignition type: distributorless
- Terminals: 3, spade
- Mounting bracket: included
Build and materials
- Construction: high-dielectric epoxy, copper windings, heat-resistant housing
- Connector gender: female
- Terminal gender: male
- Oil filled: No
- External resistor required: No
- Condition: New
- Country of origin: China
In the box
One ignition coil with its mounting bracket. The cars on this page take four coils in total, and this listing holds one.
Installation notes
- Connects directly to the factory harness and mounts in place with the included bracket.
- Designed for easy installation to keep downtime short.
Interchange: 36-8133 · IC-855 · COP-523
5C1742 · E1104 · LF2L18100 · LF2L18100A · UF604 · C1685
This part cross-references / interchanges with the following part numbers:
5C1742, E1104, LF2L18100, LF2L18100A, 36-8133, UF604, IC-855, COP-523, C1685
Frequently Asked Questions
Will the ThunderSpark 921-2174 coil pack work on a 2012 Mazda 3 4-cylinder 2.3L?
Yes. ThunderSpark 921-2174 is listed for the 2010-2013 Mazda 3 4-cylinder 2.3L, which includes the 2012 model year.
Is this a Mazda 5 ignition coil for the 2012-2015 Mazda 5 4-cylinder 2.5L?
Yes. This ignition coil is listed for the 2012-2015 Mazda 5 4-cylinder 2.5L.
Does the ThunderSpark 921-2174 ignition coil come with a mounting bracket?
Yes. The listing is one coil with its mounting bracket, and the cars it fits take four coils in total.
Is this ignition coil oil filled, and does it need an external resistor?
No to both. This coil is not oil filled and requires no external resistor. It is rated 12 volts for a distributorless ignition.
Which terminals does the ThunderSpark 921-2174 coil have?
ThunderSpark 921-2174 has three spade terminals, which are male, and a female connector.
