InfinitiG35 Sedan2003Overview/infiniti/g35-sedan/2003/base/

2003 Infiniti G35 Sedan

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 G35 Sedan.

Body PASSENGER CARTransmission Automatic (S5)

The 2003 Infiniti G35 Sedan is a passenger car featuring an S5 automatic transmission and an engine that utilizes 5.2 quarts of 5W-30 API SL oil. It maintains an EPA fuel economy rating of 17/24/19 mpg. With seven recalls and 534 total owner complaints focused primarily on the electrical system, this model year precedes a 2005-2007 period where complaints peaked at 215 in 2005 and declined to 114 by 2007.

Model year20082007200620052003

Quick specs

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

Engine oil capacity5.2 qtOEM · verified
Engine oil type5W-30 API SLOEM · verified
Lug nut torque80 ft-lbsOEM · verified
EPA fuel economy17/24/19 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 35 · 490 CCA battery, OE oil filter 1520865F0E. 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 35 · 490 CCAOEM · verified
Tire sizeP235-50R17OEM · verified
Wheel / rim8-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter1520865F0E
Engine air filter16546V0100
Fuel filter164002Y505
Spark plug224015M016 alt 224015M015
Front wiper blades28890AM805 alt 28890AC71A
Serpentine belt11920AG900 alt A1920AL510
Thermostat1305031U00 alt 212004W01B
Cabin air filter27277VP01A

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S5)

Dimensions & weight NHTSA vPIC

Overall length182.3 in
Overall width71.7 in
Overall height55.1 in
Wheelbase112.2 in
Curb weight3419 lb
Track (front / rear)60.6 / 60.6 in
Weight distribution (front / rear)61/39

Ratings & economy EPA / vPIC

EPA city / highway / combined17 / 24 / 19 mpg
DrivetrainRear-Wheel Drive
Passenger volume95 cu ft
Cargo volume11 cu ft
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 5.2 qt of 5W-30 API SL engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 80 ft-lbs. The firing order is 1-2-3-4-5-6. 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
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity1.4 Pints
Differential Gear Oil80W-90 · GL-5
Differential Gear Oil Capacity3.1 Pints
Engine Oil5W-30 · API
Engine Oil Capacity5.2 qt
Power Steering FluidATF

Engine torques

Engine Flywheel Bolts65 ft-lbs

Chassis torques

Lug Nuts80 ft-lbs
Front Wheel Hub177 ft-lbs
Rear Wheel Hub177 ft-lbs

Ignition

Cylinder Firing Order1-2-3-4-5-6
Curb Idle Speed (No Load)750 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug Gap0.043 in
Spark Plug Torque18.0 ft-lbs
Ignition Timing15, Not adjustable degrees
Ignition Timing Acceptable Variance2 degrees
Ignition Timing Reference RPMIdle rpm

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.21 lbs
Oil GroupPAG
Oil TypeNISSAN A/C System Oil Type S or equivalent
Oil Capacity6.00 oz
Standard BCI Group Number35
Standard BCI Cranking Performance490 cca

Service checks

Regulated Fuel System Pressure (Without Vacuum)43.0 psi
Regulated Fuel System Pressure (With Vacuum)34.0 psi
Engine Compression142
Engine Oil Pressure14 psi @ Idle, 43 psi @ 2000 rpm psi
Intake Valve Lash0.010-0.013 in
Exhaust Valve Lash0.011-0.015 in

Brakes

Torque Caliper to Bracket28-36 ft-lbs / 113-114 ft-lbs
Torque to Knuckle53-71 ft-lbs / 113-114 ft-lbs
Minimum Pad ThicknessFront: 0.079; Rear: 0.079 in
Rotor Max Parallel Variation0.0006 in
Rotor Runout Limit0.0039 in / 0.0014 in / 0.0028 in / 0.002 in
Rotor Nominal Thickness From0.63 in / 0.945 in / 0.866 in / 1.18 in
Rotor Nominal Thickness To0.63 in / 0.945 in / 0.866 in / 1.18 in
Rotor Minimum Machining0.551 in / 0.866 in / 0.795 in / 1.118 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
114-15 ft. lbs., Step 2: 90-9514–15 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
179-36 ft. lbs., step 2: +60 degrees-6679–36 ft. lbs
Cylinder Head — tightening sequence 4 stages
172.0 ft. lbs.72 ft. lbs
2Loosen all bolts completely in order.
326.0-32.0 ft. lbs.26–32 ft. lbs
490-95 degrees90–95 degrees
Main Bearings — tightening sequence 1 stages
124-28 ft. lbs., Step 2: 90-9524–28 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs at 105,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 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.

At 3,750 miTransmission Assembly (inspect fluid level)
Every 7,500 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 miAccessory Drive Belt (inspect) · Brake Line (inspect) · Brake Linings (inspect) · Cabin Air Filter (replace) · Transmission Assembly (inspect fluid level)
Every 30,000 miEmission Control System (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Exhaust System (Complete) (inspect) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect)
At 60,000 miAccessory Drive Belt (inspect) · Engine Coolant System (drain, flush & refill)
At 105,000 miEngine Valves (inspect valve lash) · Spark Plugs (replace)

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 Infiniti G35 Sedan shows its top complaint areas in the federal data: Electrical System leads with 121 complaints, followed by Engine & Engine Cooling at 51, Engine at 41, and Exterior Lighting at 37, with 15 crash-related complaints and 5 fire-related complaints. However, the year-by-year record only begins in 2005—two years after the target year—so direct comparison to "before and after" is limited. What the data does show is a clear downward trend in complaints from 2005 (215) through 2007 (114), while recalls actually increased from 1 to 3, suggesting the manufacturer addressed emerging defects over the model's production run. The 2003 model appears at the beginning of this generation, and its high electrical system complaints (121) may represent early-stage issues that were partially addressed in subsequent model years through increased recalls. Given the complaint volume and the lack of 2003 in the trend data, the 2005–2007 models with their declining complaint rates may present lower risk, though a well-maintained 2003 with documented service history could still offer value if the electrical system has been updated.

7
Open recalls
NHTSA campaigns
140
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
534
Owner complaints
15 involved a crash · 5 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 534 complaints on record, top 8 components.

Electrical System121
Engine & Engine Cooling51
Engine41
Exterior Lighting37
Service Brakes, Hydraulic36
Electrical System,Visibility27
Visibility19
Electrical System,Equipment16

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 7 campaigns on record for this vehicle.

03V200000Exterior Lighting:Brake Lights:SwitchReported 02/06/2003

ON CERTAIN SEDAN AND COUPE MODEL VEHICLES, THE BRAKE STOP LAMP SWITCH MAY MALFUNCTION. Remedy: DEALERS WILL REPLACE THE BRAKE LAMP SWITCH. OWNER NOTIFICATION BEGAN ON JUNE 23, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO…

11E024000Power Train:Clutch AssemblyReported 24/06/2011

ZF SERVICE IS RECALL CERTAIN CLUTCH KIT ASSEMBLIES, PART NUMBER SX: K70358-01, SHIPPED TO WHOLESALERS AS SERVICE PARTS BETWEEN SEPTEMBER 1, 2010, AND MARCH 8, 2011. THESE SERVICE PARTS ARE INTENDED FOR USE ON MODEL YEAR… Remedy: ZF SERVICE NOTIFY WHOLESALERS TO RETURN ANY AFFECTED CLUTCH KIT ASSEMBLIES STILL IN INVENTORY FOR FREE REPLACEMENT KITS. THIS CONDITION WILL CORRECT ITSELF AFTER THE FIRST…

Technical service bulletins NHTSA · verified

Showing 5 of 140 bulletins on record with NHTSA.

BulletinDateComponentSummary
ITB09-063C2026-04-13StructureCERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision…
ITB13-052E2024-05-20Electrical SystemINTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See…
ITB17-009H2024-04-29Visibility/WiperWINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY…
ITB13-007I2024-04-29Visibility/WiperREMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See…
ITB09-039K2024-04-29Visibility/WiperWINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last…

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 G35 Sedan. 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 G35 Sedan take?

5.2 qt of 5W-30 API SL, per the factory manual.

Does the 2003 G35 Sedan have open recalls?

NHTSA lists 7 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the G35 Sedan get?

EPA figures are 17 city / 24 highway / 19 combined mpg.