Fuel Injection Pump 5258154 — Aftermarket Replacement for Cummins 6L / L8.9 / 6LTAA-G2 / 6LTAA8.9-G2 Engine

Restore factory-level fuel delivery to your Cummins-powered generator or industrial equipment with this precision-built aftermarket injection pump. Part number 5258154 is engineered to OEM specifications for the Cummins 6L, L8.9, 6LTAA-G2, and 6LTAA8.9-G2 engine series — delivering consistent high-pressure fuel metering for reliable power output, stable load response, and long-term durability in continuous-duty applications.

At $1,279, this is a significant investment in your equipment’s uptime. This 100% new unit — not rebuilt, not refurbished — gives you full service life from day one, backed by Fuel Parts Depot’s commitment to quality fuel system components.

Why This Pump?

• OEM-Spec Fuel Metering — Engineered to match Cummins factory injection pressure and timing for peak engine output
• Stable Load Response — Consistent fuel delivery under variable load conditions — critical for generator and standby power applications
• Reliable Cold-Start Performance — Dependable ignition in low-temperature and emergency startup conditions
• Reduced Emissions — Optimized combustion efficiency supports fuel economy and exhaust compliance
• Direct Bolt-On Fit — Engineered specifically for Cummins 6L/L8.9/6LTAA engine family; no modifications required
• 100% New — Not Rebuilt — Full service life from installation, not a refurbished core

Compatible Engines

• Make: Cummins
• Engines: 6L, L8.9, 6LTAA-G2, 6LTAA8.9-G2
• Applications: Generators, industrial power units, heavy-duty commercial equipment

Part Details

• Part Number: 5258154
• Quantity: 1 x Fuel Injection Pump
• Condition: 100% New Aftermarket

The Cummins 6LTAA series powers some of the most critical standby and prime power generators in the field. A failing injection pump means lost power output, unstable load handling, and costly downtime. This direct-fit replacement restores full performance — without the OEM wait time or the dealer markup.