Jeep Grand Cherokee 2003 Parts Catalog

I’ve been turning wrenches for 28 years, and I’ve seen more parts catalogs turned into coffee coasters than I care to count. If you’re working on a 2003 Jeep Grand Cherokee and you’re hunting for the right part number, this is what you need. Not a third-party compilation, not a scanned mess with missing pages. This is the Jeep Grand Cherokee 2003 Parts Catalog — 426 pages of factory drawings, Mopar part numbers, and assembly breakdowns. No guessing. No pulling a part that doesn’t fit because you read a forum post. This book gives you the exact numbers.

VIN Plate Decoding: Your First Step

Page 1 shows you how to decode the VIN plate. Position 5 tells you if it’s a 4×2 or 4×4 Grand Cherokee. Position 8 gives the engine: S for 4.0L, J for 4.7L H.O., N for 4.7L. Without this, you’ll order the wrong axle or brake parts. The catalog also lists GVWR codes in pounds — from 3001 up to 10000 lbs. Match your VIN before you open any diagram.

What Parts Groups Are Covered?

Every major system is broken into groups. Group 1 covers Mopar Accessories — audio kits, navigation, bike carriers, skid plates, fog lights, even the dog guard kit. Group 2 gets into front suspension and drive: springs, control arms, stabilizer bar, track bar, front axle shafts and differentials. Group 3 is the rear axle with Dana 35C and Dana 44 housing and differential options, including Vari-Lok. Group 5 covers service brakes — calipers, rotors, master cylinder, hydraulic control unit, and lines. Each group is indexed starting on page 2.

426 Pages of Factory Data

That’s the thickness of this catalog. Every figure number corresponds to a specific assembly. For example, Fig. 1-115 shows the Player Kit, Fig. 2-110 shows the front suspension with springs and control arms. You get the part numbers, the illustration, and the description. This is the same data the dealer parts counter uses. I’ve used these catalogs to find obsolete parts that aftermarket lists couldn’t even identify.

Use the Illustrated Diagrams Correctly

Don’t skip the figure numbers. If you’re replacing front brake calipers, look up Fig. 5-110. It shows the caliper and rotor assembly with the correct retaining hardware. The catalog also includes skid plate packages for the front axle (Fig. 2-810) and transfer case (Fig. 1-522). If you’re adding accessories, the mount kits (Fig. 1-282 ball mount adapter) and roof carriers (Fig. 1-270) are all listed with Mopar PNs. No aftermarket cross-referencing needed.

Front Suspension and Drive: Group 2 Breakdown

Group 2 is where you’ll find the front axle housing for 2WD and 4WD (Fig. 2-310 and 2-320). The differential section (Fig. 2-610) gives you the carrier, ring and pinion, and bearing kits. If you’re rebuilding a front axle, this catalog tells you which parts belong to your VIN’s series — Laredo, Limited, Overland, or Sport. The series code is in position 6 of the VIN. Don’t guess.

Why an OEM Parts Catalog Beats Aftermarket

Aftermarket catalogs love to supersede part numbers with something “close.” That’s not how I work. This is the original DaimlerChrysler release for the 2003 model year. The wiring harness connectors, the brake line shapes, the axle vent (Fig. 3-310) — all are shown exactly as they left the factory. If you’ve ever had a brake line hose that was 2 inches too short because someone listed a universal part, you know why this matters.

Related Manuals for Your Shop

If you need service procedures for the next generation, grab the 2005 Jeep Grand Cherokee WK WH Factory Service Manual. For older models, the 1994-1996 Jeep Parts Catalog and Jeep Wrangler Cherokee Grand Cherokee 1991-1993 Parts Catalog will fill in the gaps. For background on VIN standards, see the Automotive Industry Overview. And if you’re replacing a battery, the Automotive Battery guide covers specs.

Does this parts catalog include torque specifications?

No. This is a parts catalog, not a service manual. It lists part numbers and assembly illustrations, but not torque values.

How do I use the VIN decoder to find the right axle parts?

On page 1, locate your VIN. Position 5 gives the vehicle line — X for Grand Cherokee 4×2, W for 4×4. Position 6 gives the series, and position 8 gives the engine. Cross-reference that with the axle group (Group 3). For example, if your VIN shows a Dana 44 rear axle (code DRK), you go to Fig. 3-220 for the housing and Fig. 3-250 for the differential with Vari-Lok. The catalog lists the exact Mopar part numbers for seals, bearings, and ring gears. If you skip the VIN step, you’ll likely order the wrong differential carrier.

Stop flipping through aftermarket catalogs and start using the real thing. Download the Factory Manual now and get the part numbers that match your VIN.