2003 Ford Explorer

Maintenance & specsVERIFIED Oct 29, 2026
Engine Oil
5W-20
Conventional
OEM spec · WSS-M2C930-ABuy oil
Capacity
5qt
with filter
4.7 qt without filter
Oil Filter
FL-820S
Motorcraft (OEM)
OEM spec: WSS-M2C930-A

The 2003 Ford Explorer takes 5W-20 Conventional with a total capacity of 5 quarts (filter included). You’ll need a 16mm socket for the drain plug, torqued to 30 Nm. The OEM oil filter is the Motorcraft FL-820S. Note: this vehicle has 7 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.

⚑ QUICK DIY TIPS FOR THE 2003 FORD EXPLORER
  • Torque your drain plug to 30 Nm (22 ft-lbs) to avoid leaks or stripped threads.
  • Using the OEM filter (Motorcraft FL-820S) is recommended for warranty compliance.
  • Always use 5W-20 Conventional as specified by Ford — using the wrong viscosity can void your powertrain warranty.
  • Check the maintenance schedule below for your next service interval.
01

Oil & Filter

OilBuy
Viscosity5W-20
Oil typeConventional
Capacity (with filter)5 qt
Capacity (w/o filter)4.7 qt
OEM specWSS-M2C930-A
Filter Options
MotorcraftFL-820SOEM
Buy
OEM oil filter for 6.2L/7.3L gas
Drain Bolt & Hardware
Socket size16 mm
ThreadM14x1.5
Torque spec30 Nm
GasketCrush washer
3rd gen U152 (4.0L SOHC V6)
02

Fluid Specifications

Transmission FluidBuy
TypeMercon LV
Capacity4 qt
Change interval60,000 mi
Brake FluidBuy
DOT typeDOT 3
Change interval45,000 mi
CoolantBuy
TypeMotorcraft Gold
ColorYellow
Capacity7 qt
Change interval100,000 mi
Power Steering FluidBuy
TypeMercon LV
Differential Fluid (rear)Buy
Type75W-90 GL-5
Capacity2 qt
Change interval60,000 mi
03

Parts & Specifications

Spark Plugs
TypeIridium
Gap0.052
Quantity4
Change interval100,000 mi
FordAGSF-32N-XOEM
Buy
FordAGSF-22F-MXOEM
Buy
FordAGSF-32P-MXOEM
Buy
Tires
Size245/60R18
Front pressure33 PSI
Rear pressure33 PSI
Air Filter
Ford2L2Z-9601-ACOEM
Buy
Ford1L2Z-9601-AAOEM
Buy
Brake Pads
Ford7U2Z-2V001-EOEM
Buy
Ford1L2Z-2200-AAOEMrear
Buy
Ford1L2Z-2001-AAOEMfront
Buy
Ford2L2Z-2001-BAOEMfront
Buy
Ford3L5Z-2001-AAOEMfront
Buy
FordBU2Z-2V001-COEMfront
Buy
Ford2U2Z-2V200-ABOEMrear
Buy
Ford8L2Z-2V200-BOEMrear
Buy
Ford2U2Z-2V001-YAOEMfront
Buy
Wiper Blades
FordSU2Z-17V528-B
Buy
FordSU2Z-17V528-J
Buy
FordSU2Z-17V528-G
Buy
FordMU2Z-17V528-BA
Buy
FordGU2Z-17V528-J
Buy
Ford1L2Z-17528-AB
Buy
FordGU2Z-17V528-Rdriver
Buy
04

Maintenance Schedule

≈ every 6 months
  • ▸Change Engine Oil & Filter
05

Torque Specifications

lug nut
100ft-lb·135.6Nm
spark plug
14mm thread, aluminum head
18ft-lb·24.4Nm
06

Safety Recalls

7
07

Technical Service Bulletins

120

Towing & Payload

Max Towing
5,600lbs
Max Payload
1,455lbs
Curb Weight
4,300lbs
GVWR
5,990lbs
Max Tongue Weight
560lbs
Hitch Class
III

Source: manufacturer

Estimated Current Value

Original MSRP
$42,000
Private Party
$4,788–$5,292
Dealer Retail
$5,544–$6,300
Trade-In
$4,284–$4,788
Depreciation
88%

Estimated values assume average condition and mileage for vehicle age.

Source: estimated

Save by doing it yourself
A shop typically charges $70–$140 for this service. Buy the parts and save.
Shop oil & filters ↗
08

Tools & Supplies

Oil Drain Pan
Catch the old oil cleanly
Shop on Amazon
Funnel
Spill-free refill
Shop on Amazon
16mm Socket
For the drain plug
Shop on Amazon
5W-20 Oil
5+ quarts
Shop on Amazon
Shop parts for the Ford Explorer
Find oil, filters, and maintenance parts for the 2003 Ford Explorer on Amazon.
Shop parts ↗
Step-by-step guide
Detailed walkthrough with tips for first-timers.
Read guide
How often to change oil
Intervals, severe service, and what your car needs.
Read guide
Synthetic vs. conventional
Which oil type is right for your engine and budget.
Read guide
Other 2003 Ford models
Other Ford Explorer years
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