1668325 New Aftermarket Electronic Unit Pump fits DAF CF XF (6 Cyl PACCAR Engine) – GOTTO

Product Specifications:

The 1668325 is a heavy-duty, precision-engineered Electronic Unit Pump (EUP) (Aftermarket Replacement) designed specifically for DAF CF and XF series commercial heavy-duty trucks. Powered by the robust PACCAR PR (9.2L) and MX (12.9L) 6-cylinder diesel engines, these trucks demand extreme fuel pressure for optimal long-haul performance. This unit pump acts as the heart of the PLD system, generating the immense pressure required for the injectors. Manufactured to verify against rigorous OEM testing protocols to restore proper fuel delivery, eliminate hard starts, and ensure maximum torque output under heavy payload.

📊 Part Number Cross Reference

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🚛 Fits Applications (Engine & Vehicle)

(Verified application list)

👨‍🔧 Tech Notes & Installation Guide

1. 💰 Why Replace the Full Set?

   • The Risk: Mixing a brand-new Electronic Unit Pump (EUP) with old, worn units on a 6-cylinder PACCAR engine causes severely uneven fuel pressure delivery to the injectors. This leads to Cylinder Power Imbalance (Engine Vibration, Drivetrain Stress, Check Engine Codes, and Decreased Fuel Economy).

   • The Fix: Take advantage of our Volume Discounts to install a matched set of 6 units. This ensures uniform pressure generation across all cylinders and restores smooth, factory-level highway performance.

2. ✅ Direct Replacement Installation:

   • This pump is precisely calibrated on the test bench to match Delphi OEM flow and pressure standards. Ensure proper mechanical installation and tappet clearance adjustments according to the DAF service manual.

3. ⚠️ Critical System Flush Warning:

   • Contaminated fuel is the #1 cause of unit pump failure. You MUST thoroughly flush the fuel tank and low-pressure delivery lines, and install brand-new fuel filters prior to startup. Failure to provide clean fuel will instantly score the precision plunger inside the new pump.

🔍 Explore More Heavy Duty Parts:

• Looking for more options? Browse our complete selection of Diesel Pump.

• Keep your engine running smoothly with our premium Engine Components.

⚖️ Legal Disclaimer

Part numbers, OE numbers, and brand names (e.g., DAF, PACCAR, Delphi) mentioned above are for reference and identification purposes only. This product is a compatible aftermarket replacement part and is NOT manufactured, sponsored, or affiliated with the original equipment manufacturers.