2003 Toyota 4Runner Tune-Up Parts
102 parts verified to fit your 2003 Toyota 4Runner for a complete tune-up. This is an easy DIY project — estimated 1-2 hours.
Air Filters
(15)primary
Airaid
Airaid Toyota Tacoma/Tundra 05-10 4 Runner 02-09 FJ Cruiser 07-09
$79.99
K&N
K&N Toyota Cabin Air Filter
$47.99
AEM Induction
AEM 14.313in O/S L x 6.625in O/S W x 1.5in H DryFlow Air Filter
$62.99
aFe
aFe MagnumFLOW Air Filters OER PDS A/F PDS Toyota Tacoma 05-12 V6-4.0L
$76.00
aFe
aFe MagnumFLOW Air Filters OER PDS A/F PDS Toyota Tundra 00-04 V600-06 V8Sequoia 01-07
$97.00
K&N
K&N Round Tapered Universal Air Filter 6in Flange ID x 7.5in Base OD x 4.5in Top OD x 6in H
$78.99
Spectre
Spectre 09-10 Toyota Land Cruiser 3.0L L4 DSL Replacement Panel Air Filter
$31.99
K&N
K&N Universal Clamp-On Air Filter 3-1/8in FLG / 6in B / 5in T / 7in H
$94.99
Fuel Injectors
(3)companion
Fluids & Additives
(84)consumable
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
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
Royal Purple
Royal Purple Synthetic High Performance 5W30 Motor Oil (Canada) - 5 Quart
$134.97
K&N
K&N 21-23 Ford Bronco 2.3L L4 / Ford Bronco Sport 1.5L L3 Spin-On Oil Filter
$10.99
Tune-Up for Other Toyota 4Runner Years
Other Jobs for Your 2003 Toyota 4Runner
Frequently Asked Questions
What parts do I need for a tune-up on my 2003 Toyota 4Runner?
A complete tune-up on the 2003 Toyota 4Runner 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 2003 Toyota 4Runner?
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 2003 Toyota 4Runner?
Yes, all parts on this page are verified to fit the 2003 Toyota 4Runner 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 2003 Toyota 4Runner?
We carry tune-up parts from trusted brands including Airaid, K&N, AEM Induction, aFe, and Spectre. Filter by brand to find your preferred manufacturer.
How much does a tune-up cost for a 2003 Toyota 4Runner?
The cost of a tune-up for the 2003 Toyota 4Runner 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.