How to service and repair the spark plugs on Toyota Yaris?

To service the 1NZ-FE ignition system, disconnect the negative battery terminal, remove cylinder head cover No. 2 by taking off 4 nuts, then remove ignition coil No. 1 by disconnecting its connectors and bolts. Finally, use a 14 mm spark plug wrench to remove the 4 spark plugs.

OEM Toyota Yaris Spark Plug

Ignition Spark Plug

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Toyota Yaris Spark Plug
Part Number: 90080-91184
$10.38 MSRP: $14.46
You Save: $4.08 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Plug, Spark; High Ignitability; Iridium Long-Life; Double Platinum; Iridium Power; Platinum TT; Iridium TT; Spark Plugs
- Replaces: 90919-01168, 90919-01218, 90919-C1002, 90919-01217, 90080-91185, 90919-01240
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2007-2018 Toyota Yaris | Base, L, LE, S, SE | 4 Cyl 1.5 L GAS
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Toyota Yaris Spark Plug
Part Number: 90118-WBC16
$29.47 MSRP: $41.02
You Save: $11.55 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Plug, Spark
- Replaces: 90118-WB461
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2019-2020 Toyota Yaris | L, LE, XLE | 4 Cyl 1.5 L GAS

Toyota Yaris Spark Plug

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Toyota Yaris Spark Plug Parts and Q&A

Spark Plug
90080-91184
Q: How to service and repair the spark plugs on Toyota Yaris?
A: To service the 1NZ-FE ignition system, disconnect the negative battery terminal, remove cylinder head cover No. 2 by taking off 4 nuts, then remove Ignition Coil No. 1 by disconnecting its connectors and bolts. Finally, use a 14 mm spark plug wrench to remove the 4 spark plugs.

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