How to remove and install Ignition Coil on BMW Z4?

Each spark plug is fed by its own coil, and the coils are mounted directly on top of the spark plugs, in the valve cover. Ensure the ignition is switched off. Remove the engine oil filler cap. Remove the in-cabin air filter and the heater/ventilation inlet air ducting from the rear of the engine compartment. Pry up the plastic caps, remove the retaining screws, and remove the plastic cover from above the injectors. Remove the plastic cover from the top of the cylinder head cover. To remove the cover, pry out the cover plates and unscrew the two securing nuts, then lift and pull the cover forwards. Manipulate the cover over the oil filler neck. Lift the securing clip, and disconnect the electrical connector from the relevant coil. If all the coils are to be removed disconnect all the connectors, then unscrew the nut securing the coil wiring ground lead to the stud on the front of the timing chain cover the wiring harness can then be unclipped from the camshaft cover and moved to one side. Unscrew the two coil securing bolts, noting the locations of any ground leads or brackets secured by the bolts. Note that the coil connectors are spring-loaded, so the top of the coil will lift as the bolts are unscrewed. Pull the coil from the valve cover and spark plug, and withdraw it from the engine. Installation is a reversal of removal, but ensure that any ground leads and brackets are in position as noted before removal.

Genuine BMW Z4 Ignition Coil

Ignition Coil Resistor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Series

Model

Year

Select Vehicle by VIN

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

4 Ignition Coils found

View related parts
BMW Z4 Ignition Coil
Part Number: 12138616153
$67.12 MSRP: $100.05
You Save: $32.93 (33%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Replaces: 12-13-7-551-049, 12-13-1-712-219, 12-13-7-571-643, 12-13-7-594-938, 12-13-7-594-937, 12-13-7-594-596, 12-13-7-562-744, 12-13-7-575-010
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2003-2016 BMW Z4 | 2.5i(E85), 3.0i(E85), Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85), sDrive28i(E89), sDrive30i(E89), sDrive35i(E89), sDrive35is(E89)
View related parts
BMW Z4 Ignition Coil
Part Number: 12138643360
$67.12 MSRP: $100.05
You Save: $32.93 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, M40i(G29), sDrive30i(G29)
View related parts
BMW Z4 Ignition Coil
Part Number: 12135A06753
$67.12 MSRP: $100.05
You Save: $32.93 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 12-13-8-657-273
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
View related parts
BMW Z4 Ignition Coils
Part Number: 12131712219
$67.12 MSRP: $100.05
You Save: $32.93 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Ignition Coil
- Replaced by: 12138616153
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2003-2005 BMW Z4 | 2.5i(E85), 3.0i(E85)

BMW Z4 Ignition Coil

The Ignition Coil in the BMW Z4 converts the car's standard 12-volt electrical supply into tens of thousands of volts. Additionally, these high-voltage volts are required to jump the gap in the spark plug. Thus, it helps fire the fuel-air mix for quick starts and zippy acceleration. The Ignition Coil has paired copper windings around an iron core. When current in the primary winding builds a magnetic field, the ECU cuts off the power. This causes the magnetic field to collapse. The collapsing field induces high voltage in the secondary winding to the plug. The early Z4 models applied a coil pack in a waste-spark pattern; they energized two cylinders at once and threw away the spark in the exhaust partner. Later generations adopted coil-on-plug technology, which required each cylinder to have its own Ignition Coil, which improved timing and boosted combustion efficiency. It is common knowledge among BMW enthusiasts that the Z4 runs optimal when each Ignition Coil is firing cleanly and efficiently. Newer design minimizes both energy loss and risk of misfire. Unlike the old pack, individual coils isolate faults to one cylinder, aid fast diagnosis, and stop a single failure from stalling the whole BMW. Regular code scans or resistance tests may reveal a failing Ignition Coil before a rough idle, loss of power, or dashboard warning light takes your BMW Z4 off the road.

If you are looking for OEM BMW Z4 Ignition Coil, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW Z4 Ignition Coil that come backed by the manufacturer's warranty.

BMW Z4 Ignition Coil Parts Questions & Experts Answers

Ignition Coil
12138616153
Q:
How to remove and install Ignition Coil on BMW Z4?
Posted by Husam R.
A:
Each spark plug is fed by its own coil, and the coils are mounted directly on top of the spark plugs, in the valve cover. Ensure the ignition is switched off. Remove the engine oil filler cap. Remove the in-cabin air filter and the heater/ventilation inlet air ducting from the rear of the engine compartment. Pry up the plastic caps, remove the retaining screws, and remove the plastic cover from above the injectors. Remove the plastic cover from the top of the cylinder head cover. To remove the cover, pry out the cover plates and unscrew the two securing nuts, then lift and pull the cover forwards. Manipulate the cover over the oil filler neck. Lift the securing clip, and disconnect the electrical connector from the relevant coil. If all the coils are to be removed disconnect all the connectors, then unscrew the nut securing the coil wiring ground lead to the stud on the front of the timing chain cover the wiring harness can then be unclipped from the camshaft cover and moved to one side. Unscrew the two coil securing bolts, noting the locations of any ground leads or brackets secured by the bolts. Note that the coil connectors are spring-loaded, so the top of the coil will lift as the bolts are unscrewed. Pull the coil from the valve cover and spark plug, and withdraw it from the engine. Installation is a reversal of removal, but ensure that any ground leads and brackets are in position as noted before removal.
Answered by BMW Parts Specialist Koleman / Mar 06, 2022