2004 Subaru Legacy Tune-Up Parts
132 parts verified to fit your 2004 Subaru Legacy for a complete tune-up. This is an easy DIY project — estimated 1-2 hours.
Air Filters
(7)primary
Spectre
Spectre 16-18 Subaru STI 2.5L H4 F/I Replacement Panel Air Filter
$41.99
aFe
aFe MagnumFLOW Air Filters OER P5R A/F P5R Nissan Cars 90-11 V6 Trucks 90-10
$71.00
aFe
aFe MagnumFLOW Air Filters OER PDS A/F PDS Nissan Cars 90-11 V6 Trucks 90-10
$76.00
K&N
K&N 02-07 WRX/STi Drop In Air Filter 11in O/S Length / 6.563in O/S Width / 1.063in Height
$68.99
Spectre
Spectre 13-18 Nissan Pathfinder 3.5L V6 F/I Replacement Air Filter
$36.99
K&N
K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter
$68.99
Mahle OE
Mahle OE 71-08 BMW 4.8L Fuel Filter
$16.05
Fuel Injectors
(20)companion
DeatschWerks
DeatschWerks Subaru 04-06 STI and Legacy GT Side Feed Fuel Rails
$199.00
DeatschWerks
DeatschWerks 255 LPH In-Tank Fuel Pump w/ 02-07 WRX/STi / 93-07 Impreza / 90-07 Legacy Set Up Kit
$109.00
DeatschWerks
DeatschWerks 340 LPH In-Tank Fuel Pump w/ 02-07 WRX/STi / 93-07 Impreza / 90-07 Legacy Set Up Kit
$169.00
Grams Performance
Grams Performance 02-11 Subaru WRX / 07+ STI / 07-11 Legacy 550cc Fuel Injectors (Set of 4)
$380.83
DeatschWerks
DeatschWerks DW440 440lph Brushless Fuel Pump Single/Dual Controller w/ Install Kit 93-07 Subaru WRX
$529.00
Grams Performance
Grams Performance 1600cc 02-11 WRX/ 07+ STi/ Forester XT/ 07-11 Legacy INJECTOR KIT
$914.83
DeatschWerks
DeatschWerks 04-06 Subaru STI/LGT Side Feed to Top Feed Fuel Rail Conv Kit w/ 2200cc Injectors
$1012.74
Grams Performance
Grams Performance 02-11 Subaru WRX / 07+ STI / 07-11 Legacy 1150cc Fuel Injectors (Set of 4)
$587.80
Fluids & Additives
(105)consumable
Liqui Moly
Liqui-Moly Synthoil Race Tech GT1 10W-60 Motor Oil - Size:5 Liter
$74.95
LIQUI MOLY
LIQUI MOLY 205L Molygen New Generation Motor Oil SAE 5W30
$1866.84
Royal Purple
Royal Purple Max Gear Synthetic 75W90 Gear Oil (Canada) - 1 Quart
$101.94
LIQUI MOLY
LIQUI MOLY 5L Top Tec ATF 1200
$219.84
LIQUI MOLY
LIQUI MOLY 1L Top Tec ATF 1100
$63.51
Royal Purple
Royal Purple HPS Synthetic High Performance Street 10W40 Motor Oil - 1 Quart
$59.94
LIQUI MOLY
LIQUI MOLY 1L Special Tec AA Motor Oil SAE 5W30
$50.23
Royal Purple
Royal Purple Premium Synthetic High Performance Multi-Grade 5W30 Motor Oil - 1 Quart
$59.94
Tune-Up for Other Subaru Legacy Years
Other Jobs for Your 2004 Subaru Legacy
Frequently Asked Questions
What parts do I need for a tune-up on my 2004 Subaru Legacy?
A complete tune-up on the 2004 Subaru Legacy typically requires air filters, fuel injectors, fluids & additives. All parts shown on this page are verified to fit your specific vehicle.
How long does a tune-up take on a 2004 Subaru Legacy?
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 2004 Subaru Legacy?
Yes, all parts on this page are verified to fit the 2004 Subaru Legacy using VCDB fitment data from manufacturers. Our fitment information is cross-referenced with industry-standard vehicle databases to ensure accuracy.
What brands make tune-up parts for the 2004 Subaru Legacy?
We carry tune-up parts from trusted brands including Spectre, aFe, K&N, Mahle OE, and DeatschWerks. Filter by brand to find your preferred manufacturer.
How much does a tune-up cost for a 2004 Subaru Legacy?
The cost of a tune-up for the 2004 Subaru Legacy 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.