2018 Subaru WRX STI Tune-Up Parts
127 parts listed for your 2018 Subaru WRX STI for a complete tune-up. Choose your trim on product pages to confirm exact fit. This is an easy DIY project - estimated 1-2 hours.
Air Filters
(20)primary
aFe
Part # 30-10161
aFe MagnumFLOW Air Filters OER P5R A/F P5R Subaru Impreza WRX STI 08-11 H4-2.5L
- Type
- Engine
$78.48
aFe
Part # 31-10161
aFe MagnumFLOW Air Filters OER PDS A/F PDS Subaru Impreza WRX STI 08-11 H4-2.5L
- Type
- Engine
$83.48
Standard Motor Products
Part # AV69
AIR CLEANER CHECK VALVE
- Type
- Engine
$284.62
Beck Arnley
Part # 042-1981
AIR FILTER
- Type
- Engine
$22.42
Beck Arnley
Part # 042-1712
AIR FILTER
- Type
- Engine
$24.82
Hengst
Part # E522L
Air filter insert
- Type
- Engine
$14.75
ATP
Part # RA-101
ATP Carbon Activated Premium Cabin Air Filter
- Type
- Engine
$40.88
Bosch
Part # 5358WS
Bosch Air Filter
- Type
- Engine
$19.69
Fuel Injectors
(28)companion
Aeromotive
Part # 18081
Aeromotive 08-20 Subaru WRX/STi 450lph Drop-In Stealth System
$980.71
Aeromotive
Part # 18082
Aeromotive 08-20 Subaru WRX/STi Dual 340lph Drop-In Stealth System
$1037.79
Aeromotive
Part # 18080
Aeromotive 08-20 Subaru WRX/STi Single 340lph Drop-In Stealth System
$852.78
DeatschWerks
Part # 6-102-1000
DeatschWerks 02+ Subaru WRX / 07+ STI/LGT Top Feed Fuel Rail Upgrade Kit w/ 1000cc Injectors
$641.34
DeatschWerks
Part # 6-102-1500
DeatschWerks 02+ Subaru WRX / 07+ STI/LGT Top Feed Fuel Rail Upgrade Kit w/ 1500cc Injectors
$980.76
DeatschWerks
Part # 9-439-1008
DeatschWerks 05-09 Subaru Legacy GT / 08-14 WRX / 08-21 STI DW430C 430lph Compact Fuel Pump
$223.48
DeatschWerks
Part # 9-1008
DeatschWerks 06-11 Honda Civic/05-09 Legacy GT/08-12 WRX/STi Fuel Pump Set Up Kit
$18.25
DeatschWerks
Part # 9-000-7050
DeatschWerks 08-21 Subaru WRX/STI X2 Series Fuel Pump Module
$438.98
Fluids & Additives
(79)consumable
aFe
Part # 44-LF017-MB
aFe Pro GUARD D2 Oil Filter 02-17 Nissan Cars L4/ 04-17 Subaru Cars H4 (4 Pack)
$67.61
aFe
Part # 44-LF016-MB
aFe Pro GUARD D2 Oil Filter 99-14 Nissan Trucks / 01-15 Honda Cars (4 Pack)
$68.61
aFe
Part # 44-LF017
aFe ProGuard D2 Fluid Filters Fuel F/F Oil; Nissan Cars 03-13; Subaru Cars H4 04-13
$20.38
aFe
Part # 44-LF016
aFe ProGuard D2 Fluid Filters Fuel F/F Oil; Nissan Trucks 99-14; Honda Cars 01-14
$20.38
Bosch
Part # 3974
Bosch Oil Filter
$16.83
Standard Motor Products
Part # OCK56
ENGINE OIL COOLER
$375.14
Dorman
Part # 917-036
Engine Oil Cooler Adapter Seal
$12.42
Dorman
Part # 917-390
Engine Oil Dipstick
$16.90
Tune-Up for Other Subaru WRX STI Years
Other Jobs for Your 2018 Subaru WRX STI
Frequently Asked Questions
What parts do I need for a tune-up on my 2018 Subaru WRX STI?
A complete tune-up on the 2018 Subaru WRX STI typically requires air filters, fuel injectors, fluids & additives. This page groups parts commonly associated with that year, make, and model; confirm your trim on product pages for exact fit.
How long does a tune-up take on a 2018 Subaru WRX STI?
A tune-up typically takes 1-2 hours and is rated as easy difficulty. Actual time may vary depending on your experience and the specific parts being replaced.
Can I do a tune-up myself?
Yes! A tune-up is an easy DIY project that most people can do with basic hand tools. It's a great way to save money on labor costs.
Are these parts guaranteed to fit my 2018 Subaru WRX STI?
These parts are listed for the 2018 Subaru WRX STI using manufacturer fitment data. Some products fit every trim, while others require trim confirmation. Use your trim in My Garage or the product page fitment checker to confirm exact fit.
What brands make tune-up parts for the 2018 Subaru WRX STI?
We carry tune-up parts from trusted brands including aFe, Standard Motor Products, Beck Arnley, Hengst, and ATP. Filter by brand to find your preferred manufacturer.
How much does a tune-up cost for a 2018 Subaru WRX STI?
The cost of a tune-up for the 2018 Subaru WRX STI depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.