🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2003

Generation Code:

TJ

Product Name:

Jeep WRANGLER 2003 TJ Parts Catalog

Product Description:

JEEP_WRANGLER_2003_TJ_PARTS_CATALOG

👋 Introduction

Market Position:

Essential resource for owners and technicians looking to identify and source specific parts, particularly aftermarket accessories, for the 2003 Jeep Wrangler TJ.

Competitive Analysis:

Distinguishes itself by focusing on parts identification for the specific TJ generation, offering a curated list of accessory and functional upgrade components beyond standard OEM parts.

Key Features:

Extensive 400-page coverage, organized by functional categories, facilitating precise part selection for customization and repair.

Resource Utility:

Highly valuable for Jeep enthusiasts, off-roaders, and DIY mechanics who frequently modify or maintain their TJ Wrangler.

📋 Manual Details

Coverage Description:

Comprehensive parts identification for 2003 Jeep Wrangler TJ models, covering various accessory and component categories.

Page Count:

400

Detail Density:

400 pages suggest a comprehensive listing of parts, potentially including diagrams and exploded views for many components.

Manual Type:

Parts Catalog

Manual Purpose:

Aids in identifying specific part numbers for the 2003 Jeep Wrangler TJ, crucial for ordering replacements or upgrades.

Language:

English

Format:

Print

📖 Manual Coverage

Systems Covered:

Audio & Electronics, Carriers & Cargo Hauling, Driving Convenience, Exterior Appearance, Exterior Protection, Fog Lights & Electrical, Heater Components, Interior Storage, Security Systems.

Audio Electronics Parts:

Parts for CD players, CD changers, antennas, and related wiring harnesses.

Cargo Hauling Parts:

Parts for hitch-mount bike carriers, spare tire-mount bike carriers, and spare tire-mount ski carriers, along with trailer receiver kits.

Exterior Appearance Parts:

Parts for tubular front and rear bumpers, front bumper extension kits, and side step kits.

Exterior Protection Parts:

Identification of parts for underbody protection shields and electrical harnesses for hardtops.

Lighting Electrical Parts:

Parts for fog lights and windshield light bars.

Interior Storage Parts:

Parts for floor console kits.

Security Parts:

Parts for an EVS Base System alarm.

Driving Convenience Parts:

Parts for soft top kits, essential for Wrangler convertibles.

Procedures Included:

Parts identification and selection for aftermarket and OEM components. Specific parts cataloguing for the listed accessory and upgrade categories.

Technical Depth:

Detailed component-level parts identification and categorization, assisting in accurate part procurement for various vehicle systems and accessories.

Part Identification Precision:

Essential for ensuring correct fitment of aftermarket accessories and replacement parts, minimizing incorrect orders and returns.

📊 Manual Specifications

File Format:

N/A (Print)

Print Quality:

Standard publication quality for automotive parts catalogs.

Binding Type:

Likely bound (e.g., perfect bound, spiral bound) for durability in a workshop environment.

Paper Type:

Durable paper stock suitable for frequent reference.

Reproducibility:

Print format allows for easy reference in a garage or workshop setting without requiring electronic devices.

⚙️ Engine Specifications

Primary Engine:

The 2003 Jeep Wrangler TJ was primarily equipped with the 4.0L (242 cid) inline-6 cylinder engine. A 2.4L (148 cid) four-cylinder engine was also available in some configurations.

4.0L Engine Performance:

Approximately 190-205 horsepower and 235-255 lb-ft of torque (specific output varies by sub-model and emissions standards).

Fuel System:

Multi-port fuel injection (MPI).

Heater Kit Engine Block 4.0L Engine:

Specifies parts for an engine block heater kit for the 4.0L engine, a beneficial accessory for cold weather operation.

4.0L Displacement:

3957 cc (242 cubic inches)

2.4L Displacement:

2429 cc (148 cubic inches)

4.0L Engine Type:

Overhead valve (OHV) inline 6-cylinder, known for its torque and durability.

2.4L Engine Type:

DOHC (Double Overhead Cam) inline 4-cylinder.

🔧 Transmission

Standard Transmission:

Typically a 5-speed manual transmission (NV3550) for the 4.0L engine. The 2.4L engine often came with a 5-speed manual (Getrag 238).

Optional Transmission:

A 4-speed automatic transmission (42RLE) was available for both engine options.

Transmission Features:

Robust designs suitable for off-road use. The catalog would identify parts for clutch systems, torque converters, transmission mounts, and fluid seals.

📐 Dimensions

Wheelbase Tj:

93.4 inches (2,372 mm)

Overall Length Tj:

Approximately 155-160 inches (3,937-4,064 mm) depending on bumper configuration.

Curb Weight Approx:

3,000 - 3,500 lbs (1,360 - 1,588 kg), depending on engine and configuration.

Gross Vehicle Weight Rating Gvwr Approx:

Around 4,500 - 5,000 lbs (2,041 - 2,268 kg), depending on configuration.

🛡️ Safety Features

NHTSA Ratings 2003:

Specific NHTSA ratings for 2003 are not readily available in summary form, but the TJ generation was known for its robust frame and basic safety structure. Rollover resistance was a key consideration.

Active Safety Features:

Standard for the era: Four-wheel drive system (Command-Trac or optional Selec-Trac). Brakes: Front discs, rear drums (standard) or optional rear discs.

Passive Safety Features:

Seat belts, basic interior padding. No airbags were standard on the TJ for early models, but some later 2003 models might have had driver-side airbags. The manual would identify parts for seat belt assemblies and potentially airbag components if equipped.

💡 Technology Features

Infotainment System 2003:

Basic AM/FM radio, optional CD player, and optional premium sound system. Cassette player was also an option. The parts catalog lists a 'Player Kit - CD - Changer - 6 Disc', indicating an optional dealer-installed or aftermarket CD changer.

Speaker Configuration:

Typically 2 or 4 speakers, with optional soundbar speakers for convertibles. Catalog may list replacement speaker parts.

Driver Assistance Features:

Minimal by modern standards. Primarily focused on basic vehicle operation and durability. The catalog does list an 'Alarm - EVS Base System', indicating an aftermarket or optional security system.

Connectivity Options:

None in the modern sense (no Bluetooth, USB, etc.). Connectivity was limited to audio input via radio or tape deck.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 miles (4,800-8,000 km) or 6 months, depending on driving conditions. Consult owner's manual for precise intervals.

Transmission Fluid Change Interval:

Automatic: Approximately every 30,000-50,000 miles (48,000-80,000 km) or as per severe service schedule. Manual: Less frequent, often checked during rear differential service or inspected for leaks.

Engine Oil Spec:

SAE 10W-30 (for 4.0L) or SAE 5W-30 (for 2.4L). API certified oil. Capacity: 5 quarts (4.7 liters) for 4.0L, 4.5 quarts (4.3 liters) for 2.4L. Refer to manual for exact specifications.

Coolant Spec:

Chrysler/Mopar OAT (Organic Acid Technology) or HOAT (Hybrid Organic Acid Technology) coolant, typically a 50/50 mix with distilled water. Specific color may vary (often green or orange).

Transmission Fluid Automatic:

Chrysler ATF+4 (4-speed automatic).

Transmission Fluid Manual:

NV3550: Mopar manual transmission fluid (MS-9224) or equivalent GL-3/GL-4 75W-90 gear oil. Getrag 238: GL-4 75W-90 gear oil.

Transfer Case Fluid:

Mopar NV241 (Command-Trac) / NV242 (Selec-Trac): Mopar NV241/242 transfer case fluid or equivalent SAE 75W-90 gear oil.

Differential Fluid:

SAE 75W-90 synthetic gear oil. If equipped with a limited-slip differential, an additive may be required. Capacity varies by differential type.

Power Steering Fluid:

Chrysler power steering fluid or equivalent ATF+4 (for systems using ATF).

Known Issues:

Common issues include: Leaks from the oil filter adapter, valve cover gasket, and rear main seal. Death wobble (severe steering oscillation, often due to worn components like track bar, steering damper, or ball joints). Cracking exhaust manifolds (especially on 4.0L). Radiator leaks. Accessory belt squeal. Loose interior trim panels. Soft top wear and leaks.

Standard Tire Size:

Commonly 215/75R15 or 30x9.50R15, depending on trim and options. The catalog would identify parts for various wheel and tire accessories.

Front Brakes:

Vented disc brakes (11.0-inch diameter).

Rear Brakes:

Drum brakes (9.0-inch diameter) or optional rear disc brakes (11.2-inch diameter) on Rubicon models.

📚 Vehicle History

Brand Heritage:

Jeep has a long-standing legacy of producing rugged, off-road capable vehicles, dating back to WWII. The Wrangler is the spiritual successor to the original Willys MB.

Jeep Philosophy:

Jeep vehicles are designed with an emphasis on off-road capability, durability, and a unique lifestyle image.

Model Evolution Tj:

The TJ generation (1997-2006) marked a significant departure from its YJ predecessor with the reintroduction of round headlights and a coil-spring suspension system on all four corners, enhancing ride comfort and off-road articulation.

Tj Chassis:

Body-on-frame construction with a solid front axle (a major point of contention for some transitioning from prior models) and a solid rear axle, both located by control arms and coil springs.

Production Period Tj:

1997-2006.

🏆 Awards & Recognition

Vehicle Awards:

The Jeep Wrangler TJ, as a model, consistently received praise for its off-road capability and iconic design. While specific awards for the 2003 model year are not prominently cataloged, the TJ generation as a whole was recognized for its segment leadership.