DodgeNeon20032.4L H.O./dodge/neon/2003/2-4l-h-o/
PL platform

2003 Dodge Neon — 2.4L H.O.

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 Neon 2.4L H.O..

Body PASSENGER CAREngine 2.4L H.O.Transmission Manual 5-spd

The 2003 Dodge Neon 2.4L H.O. is a front-wheel-drive passenger car on the PL platform, pairing a high-output 2.4-liter engine with a 5-speed manual transmission. It calls for 4.5 quarts of 5W-30 API oil with a filter change and delivers EPA ratings of 19 mpg city, 27 highway. Within the Neon’s 1993–2005 production span, this model year’s 202 owner complaints and 5 recalls sit well below the 1995 peak of 1,196 complaints, though the electrical system remains the primary trouble spot.

Model year20042003

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity4.5 qt w/ filterOEM · verified
Engine oil type5W-30 APIOEM · verified
Lug nut torque85-115 ft-lbsOEM · verified
EPA fuel economy19/27/22 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 26R · 450 CCA battery, OE oil filter 04781452BF. Note the factory engine air filter, fuel filter and front wiper blades are now discontinued — plan on a superseded or quality aftermarket equivalent, which the part pages below list where known. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 26R · 450 CCAOEM · verified
Tire sizeP195-50VR16OEM · verified
Wheel / rim6 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter04781452BF alt 04105409AE
Engine air filter04891097AA discontinued
Fuel filter05278631AA discontinued · alt 04897416AB
Spark plug68304149AA alt 68307021AA
BatteryBB26R001AA
Front wiper blades05014795AA discontinued · alt 05014794AA
ThermostatP5278144AA

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionManual 5-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 27 / 22 mpg
DrivetrainFront-Wheel Drive
Passenger volume90 cu ft
Cargo volume13 cu ft
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 4.5 qt w/ filter of 5W-30 API engine oil, DOT 3 brake fluid. Torque lug nuts to 85-115 ft-lbs, the oil drain plug to 18.0-21.0 ft-lbs. The firing order is 1-3-2-4. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake FluidDOT 3
Engine Oil5W-30 · API
Engine Oil Capacity4.5 qt w/ filter

Engine torques

Camshaft Bearing/Carrier Cap Bolts or StudsM6 Bolts: 9 ft-lbs, M8 Bolts: 21 ft-lbs
Crankshaft Pulley and/or Damper Bolts100 Turbo ft-lbs
Engine Oil Pan Drain Plug18.0-21.0 ft-lbs

Chassis torques

Lug Nuts85-115 ft-lbs
Front Wheel Hub180 ft-lbs
Rear Wheel Hub160 ft-lbs

Ignition

Cylinder Firing Order1-3-2-4
Curb Idle Speed (No Load)600-1300 rpm
Ignition Coil Secondary Resistance8500-11,500 ohms
Spark Plug Gap0.048-0.053 in
Spark Plug Torque15.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.875 lbs
Oil GroupPAG
Oil TypeND 8 oil
Oil Capacity6.10 oz
Standard BCI Group Number26R
Standard BCI Cranking Performance450 cca

Service checks

Pressure Test15 psi
Radiator Cap Pressure Relief14-18 psi
Thermostat Opening Temperature192-199 °F
Regulated Fuel System Pressure (With Vacuum)58.0 + or - 5.0 psi
Injector Primary Resistance12 approx. @ 68 degreesF ohms
Injector Primary Resistance13-16 @ 68 degreesF ohms
Engine Compression100 Minimum psi
Engine Oil Pressure25-80 psi

Brakes

Brake ApplicationWITH REAR DISC
Torque to Knuckle16 ft-lbs / 100 ft-lbs
Torque Caliper to Bracket16 ft-lbs
Minimum Pad ThicknessFront: 0.312; Rear: 0.281 Specifications
Brake ApplicationWITH REAR DISC
Rotor Max Parallel Variation0.0005 in
Rotor Runout Limit0.003 in
Rotor Nominal Thickness From0.344 in / 0.861 in

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 4 stages

Prep Do not reuse old bolts. Lubricate bolts with clean engine oil

125.0 ft. lbs.25 ft. lbs
250 ft. lbs.50 ft. lbs
350 ft. lbs.50 ft. lbs
490 degrees90 degrees
Cylinder Head — tightening sequence 4 stages

Prep Do not reuse old bolts. Lubricate bolts with clean engine oil

125.0 ft. lbs.25 ft. lbs
250 ft. lbs.50 ft. lbs
350 ft. lbs.50 ft. lbs
490 degrees90 degrees

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 6,000 mi; spark plugs every 60,000 mi; coolant every 100,000 mi. The big-interval services (every 100,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 6,000 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 18,000 miBrake System (inspect)
Every 30,000 miEngine Air Filter Element (replace) · PCV Valve (inspect)
Every 60,000 miDrive Belt (replace) · Spark Plug Wires (replace) · Spark Plugs (replace)
Every 100,000 miEngine Coolant System (drain, flush & refill)
At 102,000 miTiming Belt (replace)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2003 Dodge Neon sits in the middle of the second generation (2000–2005), where federal complaint volumes stabilized between 155 and 202 after a sharp 2000 spike to 381 complaints and 11 recalls. At 202 complaints, 5 recalls, 3 investigations, and 48 TSBs, the 2003 model shows slightly elevated complaints versus 2001–2002 but notably fewer recalls than the 2000–2001 peak, while TSB volume remains consistent with surrounding years. The leading complaint categories cluster around electrical and lighting systems — Electrical System (37), combined Electrical/Exterior Lighting (23), Exterior Lighting (19) — with Power Train also at 19; the data does not specify root causes for these patterns. Crash and fire complaints stand at 23 and 20 respectively, figures that warrant attention during inspection. Compared to the cleaner 2004–2005 exit years (≈95 complaints, 4–5 recalls, zero investigations), the 2003 carries more regulatory activity but avoids the 2000–2001 surge. If purchasing, prioritize verifying resolution of all five recalls and scrutinize electrical/lighting components, as this year represents a moderate-risk midpoint rather than a clear best or worst in the generation.

5
Open recalls
NHTSA campaigns
48
Service bulletins
Manufacturer communications
3
ODI investigations
Office of Defects Investigation
202
Owner complaints
23 involved a crash · 20 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 202 complaints on record, top 8 components.

Electrical System37
Electrical System,Exterior Lighting23
Exterior Lighting19
Power Train19
Air Bags15
Service Brakes, Hydraulic10
Engine & Engine Cooling9
Structure7

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 5 campaigns on record for this vehicle.

09E012000Exterior LightingReported 07/04/2009

SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE… Remedy: SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON MAY 11, 2009. OWNERS MAY CONTACT SABERSPORT AT…

08E050000Exterior Lighting:HeadlightsReported 11/08/2008

K2 MOTOR IS RECALLING 1,921 AFTERMARKET HEADLAMPS OF VARIOUS MODELS SOLD FOR USE ON THE ABOVE LISTED VEHICLES. THESE HEADLAMPS ARE MISSING THE AMBER SIDE REFLEX REFLECTOR WHICH FAILS TO CONFORM WITH THE REQUIREMENTS OF… Remedy: K2 MOTOR WILL NOTIFY OWNERS AND OFFER A FULL REFUND. THE RECALL BEGAN ON DECEMEBER 17, 2008. OWNERS MAY CONTACT K2 MOTOR AT 1-909-839-2992.

Technical service bulletins NHTSA · verified

Showing 5 of 48 bulletins on record with NHTSA.

BulletinDateComponentSummary
90042752020-07-22Electrical SystemKEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC…
90042752020-07-22Electrical SystemKEY, Master If replacing the key/FOBIK on a WJ, KJ, TJ, or PT Cruiser, use the "AC" NIC…
23-015-202020-04-30EquipmentDisinfectant Solution Recommended for COVID-19
08-049-202020-04-22Electrical SystemCharging System, Battery Diagnostic Tools and Warranty This information only bulletin…
31005192019-11-20StructureUse of Aftermarket Parts This bulletin involves discussing FCA US LLC position with…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Neon. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2003 Neon 2.4L H.O. take?

4.5 qt w/ filter of 5W-30 API, per the factory manual.

Does the 2003 Neon have open recalls?

NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 2.4L H.O. get?

EPA figures are 19 city / 27 highway / 22 combined mpg.