Market Position:
The Jeep Grand Cherokee WJ (1999-2004) represented Jeep's entry into the more refined, unibody SUV segment, competing with models like the Ford Explorer and Chevrolet Blazer, while retaining off-road capability. This parts catalog targets owners and technicians needing precise part identification for maintenance and repair of this popular model.
Competitive Analysis:
During its generation, the Grand Cherokee WJ was praised for its comfortable ride, improved interior quality over previous generations, and strong engine options. However, some models faced issues with the NV247 transfer case and early-onset catalytic converter failures. This parts catalog provides the definitive OEM part numbers to address these and other common wear items accurately.
Key Features:
Comprehensive OEM part listings, detailed exploded view diagrams for visual part identification, and cross-referencing of part numbers for various vehicle configurations.
Engine Components:
Detailed diagrams and part numbers for engine assembly, cooling system, lubrication system, fuel system, ignition system, exhaust system, and engine management components.
Transmission Drivetrain:
Parts for automatic transmissions (e.g., 42RE, 45RFE, 545RFE), transfer cases (e.g., NP242, NP231), axles (front and rear differentials, axle shafts, hubs), and driveshafts.
Suspension Steering:
Components for front and rear suspension (e.g., control arms, ball joints, bushings, shocks, springs), steering gear, steering column, and power steering system.
Brakes:
Diagrams and part numbers for front and rear brake systems (disc brakes, calipers, rotors, pads, master cylinder, brake lines, parking brake).
Electrical System:
Parts for lighting (headlights, taillights, interior lights), wiring harnesses, fuses, relays, battery, alternator, starter motor, ignition components, and various sensors.
Body Exterior:
External body panels (fenders, doors, hood, tailgate), trim pieces, bumpers, grille, mirrors, glass, and associated hardware and fasteners.
Body Interior:
Interior trim panels, seats, dashboard components, steering wheel, center console, carpeting, and safety features like airbags and seatbelts.
HVAC Climate Control:
Components for heating, ventilation, and air conditioning systems, including evaporator, condenser, blower motor, control panel, and ducting.
Fuel Tank Exhaust:
Fuel tank, fuel pump, fuel lines, muffler, catalytic converter, and exhaust pipes.
Part Identification:
Primary function is accurate identification of original equipment manufacturer (OEM) parts using detailed exploded views and part numbers.
Assembly Disassembly Order:
Illustrates the correct order and relationship of components for assembly and disassembly, crucial for correct part selection and installation.
Component Grouping:
Organizes parts into logical assemblies and sub-assemblies for efficient part look-up.
Technical Depth:
Highly detailed, focusing on OEM part numbers, cross-references, and diagrams, essential for precise replacement part ordering and verification. Suitable for dealership parts departments, professional mechanics, and serious DIY enthusiasts.
File Format:
Likely PDF for digital delivery, optimized for searchability and printing of specific pages.
Print Quality:
Designed for clarity of diagrams and text, allowing for high-resolution printing of individual pages.
Binding Type:
N/A (for digital format), but if a printed version were offered, it would typically be spiral-bound or comb-bound for lay-flat usability.
Paper Type:
N/A (for digital format), but typically printed on durable, matte paper to minimize glare.
Engine Option 1:
4.0L I-6 (PowerTech)
Engine Displacement 1:
3952 cc (241 cu in)
Engine Horsepower 1:
Approx. 190 hp @ 4600 rpm
Engine Torque 1:
Approx. 235 lb-ft @ 3200 rpm
Engine Block Material 1:
Cast Iron
Engine Cylinder Head Material 1:
Aluminum
Engine Induction 1:
Sequential Multi-Port Fuel Injection (MPI)
Engine Option 2:
4.7L V8 (PowerTech)
Engine Displacement 2:
4701 cc (287 cu in)
Engine Horsepower 2:
Approx. 220-227 hp @ 4700 rpm
Engine Torque 2:
Approx. 300-307 lb-ft @ 3200 rpm
Engine Block Material 2:
Aluminum
Engine Cylinder Head Material 2:
Aluminum
Engine Induction 2:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline (87 octane recommended)
Fuel Tank Capacity:
Approx. 20.5 US gallons (77.6 L)
Wheelbase:
Approx. 111.5 inches (2832 mm)
Length:
Approx. 181.0 inches (4597 mm)
Width:
Approx. 71.0 inches (1803 mm)
Height:
Approx. 67.0 inches (1702 mm)
Ground Clearance:
Approx. 8.0 inches (203 mm) (varies with tire size)
Curb Weight 4.0L:
Approx. 4,280 lbs (1,941 kg)
Curb Weight 4.7L:
Approx. 4,450 lbs (2,019 kg)
Towing Capacity:
Up to 5,000 lbs (2,268 kg) with optional towing package
Payload Capacity:
Approx. 1,100 - 1,300 lbs (499 - 590 kg)
NHTSA Driver Side Frontal Impact:
Likely 4-star (based on general WJ crash test data).
NHTSA Passenger Side Frontal Impact:
Likely 4-star (based on general WJ crash test data).
IIHS Frontal Offset Score:
Acceptable (Good for some model years/configurations, but generally rated 'Acceptable').
ABS:
Standard Anti-lock Braking System (ABS) on all four wheels.
Traction Control:
Optional traction control system (often called 'Trak-Lok' or similar).
Airbags Driver:
Standard driver-side front airbag.
Airbags Passenger:
Standard passenger-side front airbag.
Seat Belts Front:
3-point height-adjustable front seat belts with pretensioners.
Seat Belts Rear:
3-point rear seat belts.
Child Seat Anchors:
LATCH (Lower Anchors and Tethers for CHildren) system may be present on later models or as an option.
Infotainment System Type:
Base models featured an AM/FM stereo with cassette or CD player. Premium Infinity Gold sound systems with external amplifiers were available as options.
Speaker Configuration:
Typically 6-speaker system, with premium systems offering more.
Driver Assistance Features:
Limited by modern standards. Key features included ABS. Features like cruise control and power accessories were common.
Connectivity Options:
No integrated Bluetooth or USB ports. Early attempts at telematics might have been available as an option on higher trims.
Oil Change Interval Conventional:
Every 3,000 miles or 3 months (less frequent with synthetic oil).
Oil Change Interval Synthetic:
Every 5,000-7,500 miles or 6-12 months (check specific synthetic oil recommendations).
Engine Coolant Flush:
Every 30,000 - 50,000 miles or 3-5 years (using Mopar OAT coolant).
Transmission Fluid Change:
Every 30,000 - 60,000 miles (depending on driving conditions and fluid type).
Spark Plug Replacement 4.0L:
Around 100,000 miles (Long-Life Platinum).
Spark Plug Replacement 4.7L:
Around 60,000 - 100,000 miles (depending on type, e.g., platinum or iridium).
Air Filter Replacement:
Every 15,000 - 30,000 miles or annually, or as needed based on driving environment.
Engine Oil Viscosity 4.0L:
10W-30 (or 5W-30 for colder climates)
Engine Oil Viscosity 4.7L:
5W-30 (or 10W-30)
Engine Oil Capacity 4.0L:
Approx. 6 US quarts (5.7 L) with filter
Engine Oil Capacity 4.7L:
Approx. 7 US quarts (6.6 L) with filter
Coolant Type:
Mopar OAT (Orange) Antifreeze/Coolant, 50/50 mix with distilled water.
Power Steering Fluid:
ATF+4 (Mopar) or equivalent.
Known Issue Transfer Case:
NV247 Quadra-Trac II transfer case ('4-All' mode) can develop issues with the internal clutch pack or speed sensors, leading to binding or improper engagement.
Known Issue Heater Core:
Heater core is notoriously difficult to access and replace due to its location within the dashboard assembly, often leading to coolant leaks into the cabin.
Known Issue Ignition Coils:
Early models (especially 4.7L V8) could experience premature failure of ignition coils and spark plug wires.
Known Issue Catalytic Converter:
Some 4.7L V8 engines can have catalytic converter failures due to rich fuel mixtures or oil consumption issues.
Known Issue Oil Cooler Lines:
Leaking oil cooler lines can lead to oil loss and potential engine damage.
Brand Heritage:
Jeep, a division of Chrysler (now Stellantis), has a storied history rooted in military vehicles, evolving into a brand synonymous with off-road capability and adventure. The Grand Cherokee nameplate was introduced in 1993 as a premium SUV, blending luxury with the brand's legendary 4x4 prowess.
Model Evolution Wj:
The WJ generation, produced from 1999 to 2004, marked a significant redesign over its predecessor (ZJ). It introduced a more refined unibody construction, independent front suspension (IFS) for improved on-road comfort, and available powertrains like the 4.7L V8. Interior design and materials were also significantly upgraded.
Production Years:
1999-2004 (for WJ generation)
Manufacturing Location:
Jefferson North Assembly, Detroit, Michigan, USA.