Tech Feature: Jeep TJ Cylinder Block Casting Information

Tech Feature: Jeep TJ Cylinder Block Casting Information

It was considered one of the best off-road engines ever made. The extreme low-end torque is ideal for trailing and rock crawling, but "no mas" for the 4.0L Jeep. 2006 was the end of U.S. application production.

o the center of the bearing register. Two additional bolt bosses added to block where fuel pump would sit (lower right front) for coil mount.

1996-1998
C/N 3010341, 53010449

Cast iron block, left side has five 2" cast plugs. Second bolt from pan rail on right side of timing cover is a through hole, coil mount bosses lower right front. Basically it is the same as the 1991-’95 blocks except for dowel pins in the deck for head and block alignment. Oil filter mounting on left side of block is pointing downward. Uses long main bolts and stud girdle. Has "NVH" on side to denote block strengthened for "noise, vibration and harshness" reductions (no visible differences).

1998
C/N 53020514, 53020515

Cast iron block, oil filter mounting surface is 90° to pan rail of engine instead of pointing downward. Uses long main bolts and stud girdle. Has 1/8˝ pipe thread oil tap into main oil line in rear of block. Will retro back with filter kit available from Daimler-Chrysler. Has "NVH" on side to denote block strengthened for "noise, vibration and harshness." Grand Cherokee application.

1999-2006
C/N 53010327AB, 53010328AB

Cast iron block, oil filter mounting surface is 90° to pan rail of engine instead of pointing downward. All kinds of configuration and boss changes with long mounting boss protruding off the lower left of block. Uses long main bolts and stud girdle. Camshaft thrust plate block. Has "NVH" on side to denote block strengthened for "noise, vibration and harshness." No coil pack mount bosses, now mounted on cylinder head.

1999-2001
C/N 53010449AA

Cast iron block, second bolt from pan rail on right side of timing cover is a through hole. Oil filter mounting on left side of block is pointing downward. Uses long main bolts and stud girdle. Basically the same as 1996-1998 except that it is a camshaft thrust plate block. Has "NVH" on side to denote block strengthened for "noise, vibration and harshness."

Article courtesy of ENGINE BUILDER magazine.

You May Also Like

MEYLE Expands Electronics, Sensor Product Portfolio

The focus is on assistance systems and engine and transmission management, with more than 300 new part numbers.

Hamburg-based manufacturer MEYLE announced it is expanding its portfolio of electronic and sensor spare parts by more than 300 references "to meet the demand from independent repair shops for high-quality and precisely fitting parts." The focus is on assistance systems and engine and transmission management, with more than 300 new part numbers in the pipeline, as well as the expansion of its product range specifically for electric vehicles, the company said.

FCS Introduces 42 New Numbers in May

Complete strut assemblies, shock absorbers, shock absorber assembly kits and suspension struts for popular VIO applications are included.

Philips Ultinon Drive 5000 LED Lightbar Line Expands

Lumileds has expanded the Philips Ultinon Drive 5000 series to include eight models.

DMA Adds New BrakeMaster Coverage

New coverage for Ford and Chevy includes popular pickup trucks and SUVs.

Akebono Expands Severe Duty Disc Brake Pad Kits

Akebono said it expanded its severe-duty ultra-premium disc brake pad line by 14 new part numbers.

Other Posts
GSP Releases New CV Axle Part Numbers

GSP said 14 new CV axle part numbers are in stock and ready to ship.

BCA Bearings Unveils 2024 Endless Summer Promotion

The Endless Summer promotion runs from May 1 through June 30, 2024.

PRT Launches 30 New Complete Strut Assemblies

The new items represent more than 10 million vehicles in new coverage, PRT said.

RNR Tire Express Hosts Mother’s Day Giveaway

The eighth-annual event promises $100,000 in prizes, as well as a brand new 2024 Buick Encore for one select nominee.