Part of the Isuzu 4JJ1 engine documentation.
This Isuzu 4JJ1XYSB02 Parts Catalog (publication P-T1160EAC) is the factory parts-identification reference for the 4JJ1 series industrial diesel engine. Across 80 pages it breaks the engine into 35 illustrated figures, from the Engine Gasket Kit and Cylinder Head through the Turbocharger System, Fuel Injection System, and the full electrical group.
Each figure pairs an exploded diagram with reference numbers, part numbers, and quantities, so you can identify the exact component you need before ordering. It covers cooling, lubrication, air intake, exhaust, and wiring parts, plus fasteners and gaskets down to individual bolt and stud sizes.
Use it to look up correct part numbers for a rebuild, order gasket sets by head-gasket thickness, and avoid buying the wrong turbocharger or injection hardware. It is a downloadable PDF you can search, zoom, and print on demand.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Fuel Injection System, Fuel Filter and Bracket | |
| Cooling System | Water Pump and Corrosion Resistor, Thermostat and Housing, Fan and Fan Belt, Oil Cooler and Oil Filter | |
| Engine | Engine Gasket Kit, Cylinder Head Cover, Cylinder Head, Cylinder Block, Oil Pan and Level Gauge, Camshaft and Valve, Crankshaft, Piston and Flywheel, Timing Gear Case and Flywheel Housing, Engine Mounting, Inlet Manifold, Exhaust Manifold, Water Piping; Engine, Turbocharger System, Oil Pump and Oil Strainer, Oil and Vacuum Piping; Engine, Engine Electrical Control Parts | |
| Electrical System | Starter, Generator, Wiring Harness and Fuse, Fixing Parts; Wiring Harness, Switch and Relay; Instrument Panel | |
| Hydraulics & 3-Point Hitch | Emission Piping |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Turbocharger Mounting Nut Size | M8 | p. 49 |
| Exhaust Pipe Mounting Nut Size | M8 | p. 49 |
| Cylinder Head Gasket Thickness (1-Notch) | 1.05 mm | p. 15 |
| Cylinder Head Gasket Thickness (2-Notch) | 1.10 mm | p. 15 |
| Glow Plug Voltage | 24V | p. 15 |
| Water Drain Plug Thread Size | PT1/4 | p. 19 |
| Oil Gallery Plug Thread Size | PT1/8 | p. 21 |
| Injection Pump Drive Gear Tooth Count | Z=44 | p. 27 |
| Flywheel Ring Gear Tooth Count | Z=122 | p. 29 |
| Thermostat Opening Temperature | 85°C | p. 43 |
