Bosch CP4 High-Pressure Fuel Injection Pump 0-445-020-525 / 0445020525 — For Deutz Diesel Truck Engines

The Bosch CP4 is the heart of a modern common rail diesel fuel system — generating the ultra-high pressures that make today's diesel engines clean, powerful, and fuel-efficient. When a CP4 fails, the entire common rail system goes down with it. This precision aftermarket replacement is engineered to Deutz and Bosch specifications, restoring the high-pressure fuel delivery your common rail injectors depend on for reliable starting, full power output, and emissions compliance.

✅ Application

• Deutz diesel truck engines (common rail equipped)
• Bosch CP4 high-pressure pump applications

⚠️ Important: CP4 Failure & System Contamination

When a CP4 pump fails catastrophically, metal debris can contaminate the entire fuel system — injectors, fuel lines, and the fuel rail. Before installing a replacement pump, it is critical to flush the fuel system thoroughly and inspect or replace injectors and the fuel filter. Skipping this step risks damaging the new pump immediately. If you're unsure about the extent of contamination, consult a qualified diesel technician before installation.

🔧 Signs Your CP4 Pump Is Failing

Loss of power, hard starting, rough running, excessive smoke, low rail pressure fault codes (P0087, P0088, or similar), or complete engine shutdown are all signs of CP4 failure. On a commercial truck, CP4 failure means immediate downtime — this is not a part that gives much warning before it fails completely.

⚙️ Product Highlights

• Part Numbers: 0-445-020-525 / 0445020525
• Pump Type: Bosch CP4 High-Pressure Common Rail Pump
• Condition: 100% New — Aftermarket Quality
• High-Pressure Rated: Generates the elevated rail pressures required for modern common rail combustion and emissions compliance
• Precision Engineered: Built to Bosch and Deutz specifications for consistent pressure output across all engine speeds and load conditions
• Direct Replacement: Bolt-on fitment for compatible Deutz common rail engines — no modification required
• Applications: Commercial trucking, heavy transport, industrial power units

📦 What's Included

1 × CP4 High-Pressure Fuel Injection Pump (0-445-020-525 / 0445020525)

⚡ Fast Shipping — Minimize Your Downtime

In stock and ready to ship. Need to confirm fitment against your Deutz engine model or serial number? Contact us before you order and we'll verify compatibility. Given the cost of this repair, we want to make sure you get the right part first time.