DEF RE68345 Fuel Lift Pump for John Deere PowerTech 4.5L & 6.8L Engines — Direct-Fit Replacement, Restores Fuel Delivery

The DEF RE68345 fuel lift pump is a direct-fit replacement pump engineered to restore reliable fuel delivery on John Deere 4.5L and 6.8L PowerTech engines.

This lift pump is specified to replace OE part RE68345 and fits a wide range of John Deere PowerTech engines used in gensets, marine units and industrial equipment. Built for compatibility with 4045DF, 4045HF, 4045TF and 6068-series engines, the pump helps maintain steady fuel pressure to the injection system and supports consistent engine starting and operation when installed correctly.

Which John Deere engines and models will this pump fit?

The DEF RE68345 is designed for many PowerTech 4.5L and 6.8L engine variants. It fits multiple 4045DF/HF/TF family engines and several 6068 models, including genset and marine applications. Always compare the pump image and mounting points with your existing unit before purchase.

• Compatible with PowerTech 4.5L: 4045DF270, 4045HF150/157, 4045HFS80, 4045TF120/150/151/157/250/270, 4045TFS70
• Compatible with PowerTech 6.8L: 6068HF150/157, 6068TF157/250, 6068TFM50 (marine)
• Common use: genset OEM SDMO engines and select industrial/marine units

How does this replacement pump affect engine performance and reliability?

Replacing a worn or failing lift pump with the correct RE68345 unit helps ensure consistent fuel flow to the injection pump, which supports stable idle, reliable starts and reduced cavitation risk. While it does not change engine power, it restores designed fuel delivery characteristics when installed and bled properly.

• Restores steady low-pressure fuel feed to injection system
• Reduces air intrusion and hard-starting symptoms when fitted correctly
• Supports reliable operation under typical genset and marine loads

What should I check before ordering and installing this pump?

Confirm fit by matching mounting flange, inlet/outlet hose locations and electrical connections to your current pump. The product listing includes photos to compare; one engine may use more than one pump, so inspect the unit on your machine rather than relying solely on model numbers.

• Verify RE68345 reference and visual match with existing pump
• Check voltage and rotation specs for electrically driven units if applicable
• Follow proper bleeding and priming procedures after installation

What are the key features and replacement notes for this pump?

This DEF unit replaces OE RE68345 and is sold as a direct aftermarket alternative. It arrives ready to install but requires confirmation of fit and standard installation practices. Inspect included pictures and part orientation to avoid ordering the wrong variant.

• Replaces OE number: RE68345
• Fits multiple 4045 and 6068 PowerTech engine variants listed above
• Buyer note: inspect images and your machine — some engines use multiple pumps

Who is this for? The DEF RE68345 lift pump is intended for mechanics, fleet managers and equipment owners who operate John Deere PowerTech 4.5L and 6.8L engines in gensets, marine vessels, or industrial machinery and need a dependable aftermarket replacement. Choose this pump when you require a like-for-like replacement to restore proper fuel feed and minimize downtime, and ensure you verify compatibility by visual comparison before purchase.