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Parts for your 2018 Subaru Outback-Spark plugs

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Permatex Dielectric Tune-Up Grease 9g - PX81150

Permatex Dielectric Tune-Up Grease 9g - PX81150

$24
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Explore 4WD & Adventure

GV Tools 3 Piece Spark Plug Socket Set - GV012

GV Tools 3 Piece Spark Plug Socket Set - GV012

$14
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Penrite Greenkeepers 2 Stroke Oil 2.5L - SEGNKTS0025

Penrite Greenkeepers 2 Stroke Oil 2.5L - SEGNKTS0025

$37
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Mechpro Spark Plug Wrench 16mm - MPBE101

Mechpro Spark Plug Wrench 16mm - MPBE101

$12
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Mechpro Spark Plug Wrench 2-In-1 16/21mm - MPBE102

Mechpro Spark Plug Wrench 2-In-1 16/21mm - MPBE102

$14
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Penrite Greenkeepers 2 Stroke Oil 1L - SEGNKTS001

Penrite Greenkeepers 2 Stroke Oil 1L - SEGNKTS001

$27
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T&E Tools Ignition Spark Tester

T&E Tools Ignition Spark Tester

$39
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Toledo Spark Plug Gap Gauge - 302163

Toledo Spark Plug Gap Gauge - 302163

$5
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Repco Spark Plug Extension Bar 21mm - RT24846
Clearance

Repco Spark Plug Extension Bar 21mm - RT24846

$29
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Penrite Greenkeepers 2 Stroke Oil 20L - SEGNKTS020

Penrite Greenkeepers 2 Stroke Oil 20L - SEGNKTS020

$297
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T&E Tools Spark Plug Boot Pliers

T&E Tools Spark Plug Boot Pliers

$30
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Repco Petrol Cylinder Compression Tester - RST160

Repco Petrol Cylinder Compression Tester - RST160

$130
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Nulon Engine Stop Smoke 500ml - SS
Clearance

Nulon Engine Stop Smoke 500ml - SS

$10
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Castrol OUTBOARD 2T 2 Stroke Oil 4L - 3377729

Castrol OUTBOARD 2T 2 Stroke Oil 4L - 3377729

$66
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T&E Tools Spark Plug Thread Repair Kit 14mm - 4100

T&E Tools Spark Plug Thread Repair Kit 14mm - 4100

$35
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Toledo Spark Plug Starter - 302157
Clearance

Toledo Spark Plug Starter - 302157

$6
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Toledo Spark Plug Thread Chaser - 302168

Toledo Spark Plug Thread Chaser - 302168

$29
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Toledo HD Spark Plug Firing Tester - 302167

Toledo HD Spark Plug Firing Tester - 302167

$36
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Toledo Spark Plug Thread Kit - 302300

Toledo Spark Plug Thread Kit - 302300

$42
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Powerbuilt Spark Plug Socket - 643001

Powerbuilt Spark Plug Socket - 643001

$9
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Powerbuilt Spark Plug Socket - 643004

Powerbuilt Spark Plug Socket - 643004

$8
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Toledo Spark Plug Thread Kit 14mm - 302176

Toledo Spark Plug Thread Kit 14mm - 302176

$42
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Powerbuilt Spark Plug Socket - 643005

Powerbuilt Spark Plug Socket - 643005

$11
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Toledo Spark Plug Tool 21mm Hex - 302223

Toledo Spark Plug Tool 21mm Hex - 302223

$56
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Repco Heavy Duty Spark Plug Boot Pliers - RST63

Repco Heavy Duty Spark Plug Boot Pliers - RST63

$46
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Toledo Spark Plug Tester - Box Type - 302165

Toledo Spark Plug Tester - Box Type - 302165

$22
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Castrol OUTBOARD 2T 2 Stroke Oil 1L - 3377726

Castrol OUTBOARD 2T 2 Stroke Oil 1L - 3377726

$45
Fitment Notes:
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T&E Tools Electronic Ignition Spark Tester

T&E Tools Electronic Ignition Spark Tester

$56
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Showing 1 - 39 of 46 products

Everything You Need to Know About Spark Plugs for Your 2018 Subaru Outback

The 2018 Subaru Outback, like most petrol-powered vehicles, certainly relies on spark plugs to keep its engine running smoothly. Spark plugs are essential components in the ignition system of internal combustion engines, including the one in the Outback. They play a crucial role in igniting the air-fuel mixture in the engine cylinders, which powers the vehicle.

Spark plugs might seem like simple parts, but they are absolutely vital. Without them, your 2018 Subaru Outback would not start or run. Here's why: spark plugs generate a tiny electric spark at just the right moment to ignite the compressed air and fuel inside the engine cylinders. This controlled explosion is what drives the pistons and creates the power needed to move the car. Without spark plugs, there is no ignition, and without ignition, the engine would be completely useless.

Replacing or maintaining the spark plugs is an important part of servicing your 2018 Subaru Outback. Over time, spark plugs wear down due to repeated exposure to high voltage and extreme heat. This wear affects their ability to create a strong, reliable spark, which can lead to rough idling, sluggish acceleration, poor fuel economy, and even engine misfires.

For the 2018 Subaru Outback, which typically uses a Subaru Boxer engine, the recommended interval for changing spark plugs usually sits around 60,000 to 100,000 kilometres depending on the type of spark plugs fitted and driving conditions. Original equipment spark plugs from Subaru are typically iridium or platinum tipped, designed for longer life and better performance compared to standard copper plugs.

Keeping on top of spark plug maintenance can save you headaches down the track. When spark plugs are worn, the engine's combustion process becomes less efficient. This inefficiency can cause symptoms like:

  • Difficulty starting the engine
  • Reduced acceleration and engine power
  • Lower fuel economy
  • Unusual engine noises or vibrations
  • Potential increase in emissions

Regular servicing that includes checking and replacing spark plugs can keep your 2018 Subaru Outback running smoothly year after year. Plus, fresh spark plugs help maintain optimal engine performance and fuel efficiency, which is especially important if you rely on your Outback for daily drives or adventures around Aussie roads.

When it's time for a change, there's a few things to consider. Spark plugs need to be fitted properly, with the right gap between the electrodes, to ensure the spark fires efficiently. Subaru dealerships and qualified mechanics have the recommended specifications and tools to replace these plugs correctly. Using the right type of spark plug is also essential. You want to stick with the manufacturer's recommendation because the engine design, combustion chamber shape and fuel injection system all work in harmony with the specific spark plugs Subaru fits to the Outback from the factory.

Here are some handy tips for spark plug care on the 2018 Subaru Outback:

  • Check your owner's manual for the recommended replacement interval
  • Look out for rough idling or poor engine performance as signs to check spark plugs earlier
  • Have a professional inspect the plugs during regular servicing
  • Use only genuine or high-quality equivalent spark plugs for replacements
  • Avoid attempting a DIY replacement unless you are confident with mechanical tasks and have the correct tools

Even though spark plugs are small, inexpensive parts, their impact on your vehicle's engine is huge. They deserve a little attention during your Outback's health checks. Put simply, keeping your spark plugs in good shape helps your car start easily, drive smoothly and stay efficient on fuel - which is what every Subaru Outback owner wants.