How to disconnect the ignition coil from the spark plug on Mazda 6?

Disconnect the cable from the negative battery terminal. Remove the upper engine cover by pulling the cover up from each side and lifting it off the mounting posts in the center of the cover. On V6 engines, remove the upper intake manifold. Disconnect the electrical connector from the ignition coil. Remove the mounting fastener from the ignition coil. Grasp the coil firmly and pull it off the spark plug (Remove the coil assembly from the spark plug tube). Installation is the reverse of removal.

Genuine Mazda 6 Ignition Coil

Ignition Coil Resistor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

6 Ignition Coils found

View related parts
Mazda 6 Ignition Coil Part Number: CY01-18-100B
$56.75 MSRP: $75.68
You Save: $18.93 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coil, Ignition
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2009-2013 Mazda 6 | S | 6 Cyl 3.7 L GAS
View related parts
Mazda 6 Ignition Coil Part Number: 1F20-18-100A
$75.50 MSRP: $100.69
You Save: $25.19 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coil, Ignition; Ignition Coil
- Replaces: 1F20-18-100, LF01-18-100A, LF01-18-100
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2003-2005 Mazda 6 | i | 4 Cyl 2.3 L GAS
View related parts
Mazda 6 Ignition Coil Part Number: AJ51-18-100A
$92.21 MSRP: $122.98
You Save: $30.77 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coil, Ignition; Coil
- Replaces: AJ51-18-100, ZZB1-18-100
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2003-2008 Mazda 6 | i, Mazdaspeed, S | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
View related parts
Mazda 6 Ignition Coil Part Number: L3G2-18-100B-9U
$122.51 MSRP: $163.38
You Save: $40.87 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coil
- Replaces: L3G2-18-100A-9U, L3G2-18-100, L3G2-18-100B, L3K9-18-100B, L3K9-18-100A, L3G2-18-100A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2006-2013 Mazda 6 | i, Mazdaspeed, S | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
View related parts
Mazda 6 Ignition Coil Part Number: PE20-18-100A
$131.73 MSRP: $175.67
You Save: $43.94 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coil, Ignition
- Replaces: P51B-18-100, PE01-18-100, PE01-18-100A, PE20-18-100
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2021 Mazda 6 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature, Sport, Touring | 4 Cyl 2.5 L GAS
View related parts
Mazda 6 Ignition Coil Part Number: PYFS-18-100
$147.51 MSRP: $196.73
You Save: $49.22 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Coil, Ignition; Ignition Coil
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2018-2021 Mazda 6 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature, Sport, Touring | 4 Cyl 2.5 L GAS

Mazda 6 Ignition Coil

The core element of the Mazda 6 spark system is the Ignition Coil, which boosts the 12-volt output of the battery to the tens of thousands of volts required to ignite each spark plug and launch the air-fuel mixture into a blaze of certain effortless power. Within its polymer casing are primary and secondary wires of copper around an iron core. Whenever the key is on, current is conducted through the thicker primary wire to create a magnetic field, after which the electronic control unit breaks the circuit rapidly, the field dissipates, and the secondary winding starts discharging up to 40,000 volts through the high-tension tower to the plug. Previous Mazda 6 models applied a single Ignition Coil coupled with a distributor, which sent the surge to all the cylinders via a rotating rotor and long plug leads. Subsequent Mazda 6 vehicles moved to distributorless ignition systems, where two or more coils are bundled together in a pack, and a waste spark system ignites two cylinders simultaneously, one of which is merely expelling exhaust. The new implementations employ Coil-on-Plug or Coil-Near-Plug designs with each of the six cylinders having its own small Ignition Coil to provide cleaner timing, faster energy flow and a lower count of high-voltage conductors. Throughout all these generations the objective remains the same, efficient voltage change with little energy waste, to have Mazda engines operate cleaner, idle more stably, and with a faster response when the accelerator is released.

Looking for Ignition Coil with proven quality? Choose OEM Ignition Coil. Mazda designs and builds them to strict factory specs. Every piece goes through rigorous quality checks. You'll get parts that fit right and work like new. Shop our huge inventory of OEM Mazda 6 parts. Enjoy the highly competitive prices online. Our site is your one-stop shop. Each genuine 6 part includes a manufacturer's warranty. Buy with confidence. Our return policy is simple and hassle-free. In a rush? Choose expedited delivery at checkout. You'll love the streamlined experience from search to checkout to receiving your order.

Mazda 6 Ignition Coil Parts and Q&A

Ignition Coil
AJ51-18-100A
Q: How to disconnect the ignition coil from the spark plug on Mazda 6?
A:
Disconnect the cable from the negative battery terminal. Remove the upper engine cover by pulling the cover up from each side and lifting it off the mounting posts in the center of the cover. On V6 engines, remove the upper intake manifold. Disconnect the electrical connector from the ignition coil. Remove the mounting fastener from the ignition coil. Grasp the coil firmly and pull it off the spark plug (Remove the coil assembly from the spark plug tube). Installation is the reverse of removal.