KMP Overhaul Kits for Caterpillar® 3408 Engines
The Caterpillar® 3408 engine with ESN prefix 99U is a proven V8 diesel engine renowned for its durability, high power output and long service life. Widely used across demanding industrial, marine and power generation applications, the 99U engine has earned a reputation for dependable performance in some of the toughest operating environments.
Keeping these engines running efficiently requires high-quality replacement components that meet the demands of heavy-duty operation. Whether you’re carrying out a complete engine rebuild, scheduled maintenance or replacing worn parts, you’ll find a comprehensive range of aftermarket parts suitable for Caterpillar® 3408 99U engines. From overhaul kits, pistons, liners and gasket sets to bearings, fuel system components and valvetrain parts, every component is designed to help maximise engine reliability, performance and service life.
Designed for Heavy-Duty Performance
| Specification | Caterpillar® 3408 Engine* |
|---|---|
| Configuration | V8, 4-stroke-cycle |
| Displacement | 18L |
| Bore x Stroke (mm) | 137 x 152 |
| Power (hp) | Up to 520 |
Caterpillar® 3408 (ESN Prefix: 99U) Engine Parts
The Caterpillar® 3408 with ESN prefix 99U is one of the most recognised V8 diesel engines ever produced. Designed for continuous heavy-duty operation, it delivers exceptional reliability, strong low-end torque and long service intervals, making it a popular choice across construction, mining, marine and industrial sectors.
Although many 99U engines have been in service for decades, thousands continue to operate worldwide thanks to regular maintenance and high-quality replacement parts. Whether your engine is due for a scheduled overhaul or requires an emergency repair, sourcing dependable components is essential to minimise downtime and maximise engine life.
High-Quality Replacement Parts
We supply a comprehensive range of aftermarket parts suitable for Caterpillar® 3408 99U engines, manufactured to meet or exceed OEM specifications for quality, fit and performance.
Our range includes:
- Complete overhaul kits
- Piston and liner kits
- Pistons and piston rings
- Cylinder liners
- Gasket sets
- Main bearings
- Connecting rod bearings
- Thrust washers
- Crankshafts
- Camshafts
- Connecting rods
- Cylinder heads
- Valves and valve train components
- Oil pumps
- Water pumps
- Fuel injectors
- Fuel transfer pumps
- Turbochargers
- Oil seals
- Sensors and electrical components
- Filters and service parts
Every component is selected to provide reliable performance in demanding operating conditions while helping to extend the service life of your engine.

