The Cummins ISLe and QSL9 are 8.9L inline-6 diesel engines trusted worldwide in heavy-duty trucks, buses, coaches, construction equipment, and marine applications. The ISLe covers Euro III/IV emissions standards while the QSL9 meets Tier 4 requirements — both sharing the same proven engine architecture. The fuel transfer pump is a critical low-pressure supply component that feeds fuel from the tank to the high-pressure injection system — when it fails, you'll experience hard starts, fuel starvation, engine stalling, and in severe cases complete engine shutdown. This is a genuine new original Cummins fuel transfer pump — not aftermarket or remanufactured — covering part numbers 4944735 and C4944735.

✅ Direct-Fit Compatibility

• Cummins Engines: ISLe, QSL9 (8.9L inline-6)
• Suitable for heavy-duty trucks, buses, coaches, construction equipment, and marine applications fitted with the Cummins ISLe or QSL9 engine
• Direct replacement — no modifications required

🔧 Product Highlights

• New Original Cummins: Genuine factory unit — not aftermarket or remanufactured
• OEM-Spec Fuel Flow & Pressure: Factory-calibrated for correct low-pressure fuel delivery to the injection system across all operating conditions
• Direct Drop-In Fit: No modifications required; installs like the original
• Dual Part Number Format: Covers both 4944735 and C4944735 (Cummins OEM prefix) for confirmed fitment
• ISLe & QSL9 Coverage: Fits both Euro III/IV and Tier 4 variants of the Cummins 8.9L engine family
• Maximum Reliability: Genuine OEM provenance for a critical fuel system component

📦 What's Included

• 1 × Fuel Transfer Pump (4944735 / C4944735)

🔑 Key Specs

• Part Numbers: 4944735, C4944735
• Condition: New Original (Cummins OEM)
• Fitment: Cummins ISLe / QSL9 engines (8.9L inline-6)

Please verify your engine serial number and existing part number before ordering. Contact us for fitment confirmation if needed.