2003 Ram 1500
Maintenance & specsVERIFIED Oct 29, 2026
The 2003 Ram 1500 takes 5W-20 Conventional with a total capacity of 7 quarts (filter included). You’ll need a 16mm socket for the drain plug, torqued to 34 Nm. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
⚑ QUICK DIY TIPS FOR THE 2003 RAM 1500
- Torque your drain plug to 34 Nm (25 ft-lbs) to avoid leaks or stripped threads.
- Always use 5W-20 Conventional as specified by Ram — 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)7 qt
Capacity (w/o filter)6.5 qt
OEM specMS-6395
Filter Options
No filter cross-references added yet.
Drain Bolt & Hardware
Socket size16 mm
ThreadM14x1.5
Torque spec34 Nm
GasketCrush washer
3rd gen DR/DH (4.7L V8)
02
Fluid Specifications
03
Parts & Specifications
Tires
Size215/55R17
Front pressure33 PSI
Rear pressure33 PSI
04
Maintenance Schedule
≈ every 6 months
- ▸Change Engine Oil & Filter
05
Torque Specifications
Estimated Current Value
Original MSRP
$30,000
Private Party
$2,565–$2,835
Dealer Retail
$2,970–$3,375
Trade-In
$2,295–$2,565
Depreciation
91%
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.
08
Tools & Supplies
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