Lift Pump for 6 7 Cummins Reviews: 5 Best Options

If you own a 6.7 Cummins diesel engine, you know how critical a reliable lift pump is for fuel delivery and engine performance. A failing pump can lead to power loss, hard starts, or even costly injector damage.

This guide reviews five of the best lift pump options for your 6.7 Cummins, from mechanical replacements to fuel transfer pumps. We break down each product’s features, compatibility, and pros and cons so you can make an informed choice.

Rareelectrical Mechanical Fuel Lift Pump – Reliable Replacement

The Rareelectrical Mechanical Fuel Lift Pump is a direct-fit replacement for 1989-1993 Dodge D250, D350, W250, and W350 trucks with the 5.9L Cummins 6BT diesel. It replaces OEM part numbers like Chrysler 4429374 and Cummins 3904374, making it a solid choice if you need a mechanical diaphragm-style lift pump for older models. The pump is designed to restore proper fuel pressure to your injection system, which helps with cold starts and consistent power delivery.

While this pump is not for 6.7 Cummins engines directly, it’s listed here because many owners of earlier 5.9L trucks upgrade or cross-reference parts. The build quality is decent for the price, but you must verify your OEM part number before ordering to ensure fitment. It’s a straightforward mechanical pump that doesn’t require electrical wiring, which simplifies installation on compatible vehicles.

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• Compatible with Dodge,D250,D350,W250,W350,SPECTRA PREMIUM. Please verify your OEM part number from your original unit to help ensure fitment.
• Replaces: Oem Part Numbers: / Chrysler: 4429374, 68047915Aa, 5012376Aa, 5012376Ab, 5174673Aa / Cummins: 3904374 / Specifications: / Type: Mechanical Fuel Pump (Diaphragm/Lift Pump) / Inlet Od: 0.375 In (3/8") / Inlet: 1 / Outlet: 1 / System Pressure: 7 Psi / Max Pressure: 9 Psi / Gaskets Included: Yes (2) / Weight: 3 Lbs / Condition: New / Application: / D250/D350 Pickup Cummins 5.9L 6Bt Diesel (1989-1993) / W250/W350 Pickup 4Wd Cummins 5.9L 6Bt Diesel
• Applications: Dodge Pickups — Cummins 5.9L Diesel: / D250 Pickup Cummins 5.9L L6 6Bt Turbodiesel (1989-1993) / D350 Pickup Cummins 5.9L L6 6Bt Turbodiesel (1989-1993) / W250 Pickup 4Wd Cummins 5.9L L6 6Bt Turbodiesel (1989-1993) / W350 Pickup 4Wd Cummins 5.9L L6 6Bt Turbodiesel (1989-1993) / Engine Details: / Cummins 6Bt 5.9L Inline-6 Turbodiesel (359 Cid) / Mechanical Fuel Transfer/Lift Pump — Diaphragm Type / Mounts To Engine Block, Supplies Fuel To Injection Pump /
• Applications: Pump / / Note: D-Series Are 2Wd, W-Series Are 4Wd. Verify Oem Part Number From Your Original Unit Before Ordering. / …
• Fuel Pump –

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GevLtty 12V Fuel Transfer Pump – Versatile for B6.7 Engines

The GevLtty 12V Fuel Transfer Pump is compatible with a range of Cummins engines, including the B4.5S, B6.7, B150B, B6.7S, 6C8.3, ISC8.3, QSC8.3, and QSL9. This makes it a strong candidate if you need a lift pump for your 6.7 Cummins, especially in industrial or agricultural applications. The pump runs on 12V DC, so it requires a simple electrical connection, and it’s designed to move diesel fuel reliably from the tank to the engine.

This pump is not a direct OEM replacement for Dodge Ram trucks, but it works well as a standalone fuel transfer or lift pump for Cummins-powered equipment. The build appears robust for the price, and it includes the necessary fittings for installation. If you’re looking for a budget-friendly option to keep your 6.7 Cummins fed with fuel, this GevLtty pump is worth considering, though you may need to adapt mounting and plumbing.

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Generic OEM Replacement Bracket Lifting – For 6CT and ISC Engines

This Generic OEM Replacement Bracket Lifting is designed for Cummins engines like the 6CT 8.3C, ISC, QSC 8.3L, ISL, and QSL, and it also lists compatibility with B6.7 and other models such as ISX15 and QSX15. It’s a lifting bracket, not a pump itself, but it’s often used when installing or servicing lift pumps on these engines. The bracket helps you safely lift heavy components during maintenance.

If you’re working on a 6.7 Cummins in a medium-duty or industrial application, this bracket can be a useful tool. It’s made from generic materials but is designed to match OEM specifications (part 3906440). Keep in mind that this is a lifting aid, not a fuel pump, so it won’t solve fuel delivery issues. It’s best for mechanics or DIYers who need a sturdy bracket for engine work.

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• 4B K38 K50 QSM11 ISM11 ISX15 QSX15 N855 N14 M11 B6.7 K19 K38 K50 Celect Elctronic Injection Diesel NT855 Big Cam
• ISB QSB white skid steer B3.9 Small Cam cabover

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GevLtty 3349862 Diesel Injector – For QSM11 and B6.7 Engines

The GevLtty 3349862 Diesel Engine Injector is a new fuel injector designed to fit Cummins engines including the QSM11, N855, B6.7, and ISB D350. While this is an injector, not a lift pump, it’s closely related to the fuel system of your 6.7 Cummins. A failing injector can mimic lift pump issues like rough idling or poor fuel economy, so having a replacement on hand is smart.

This injector is a direct replacement for part number 3349862 and is sold as a single unit. It’s built to OEM specifications, so it should restore proper fuel atomization and combustion. If you’re troubleshooting fuel problems on your 6.7 Cummins, consider checking both the lift pump and injectors. This GevLtty injector is a cost-effective option for replacing worn-out units, but ensure it matches your engine’s exact requirements.

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• part nume: Diesel Engine Parts New Injector
• part numbar:3349862
• Fits for Cummins Engine Parts QSM11 N855 B6.7 ISB D350

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GevLtty 2-Pack 3349862 Injectors – Value Set for B6.7

The GevLtty 2-Pack of 3349862 Diesel Injectors offers two new injectors for Cummins engines such as the QSM11, N855, B6.7, and ISB D350. This is a value set if you need to replace multiple injectors on your 6.7 Cummins, as it saves you from buying singles separately. Each injector is built to OEM specs and should provide consistent fuel delivery and improved engine performance.

Like the single injector, this set is not a lift pump, but it’s a critical fuel system component. If your 6.7 Cummins is experiencing misfires or loss of power, worn injectors could be the culprit. This two-pack is ideal for preventive maintenance or a full injector swap. Just verify that your engine uses the 3349862 part number before purchasing, as compatibility is key.

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• part nume: Diesel Engine Parts New Injector
• part numbar:3349862
• Fits for Cummins Engine Parts QSM11 N855 B6.7 ISB D350

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Buyer’s Guide: What to Consider

Choosing the right lift pump for your 6.7 Cummins involves several key factors. Here are five points to consider before making a purchase.

• Compatibility: Ensure the lift pump matches your specific 6.7 Cummins engine model and vehicle application. Check OEM part numbers and engine series like B6.7 or ISB.
• Pump Type: Decide between mechanical or electric pumps. Mechanical pumps are simpler but may not provide enough pressure for modified engines. Electric pumps offer more control.
• Flow Rate: Consider the pump's fuel flow rate (GPH or LPH). Higher flow rates support performance upgrades, but stock engines need only OEM-spec flow to avoid over-pressurizing.
• Installation: Look for direct-fit designs with included hardware to simplify installation. Some pumps require custom brackets or wiring, which adds time and complexity.
• Durability: Choose pumps with robust materials like cast iron or aluminum housings. Reliable seals and bearings extend pump life, especially in high-mileage or heavy-use applications.

Conclusion

Selecting the best lift pump for your 6.7 Cummins depends on your specific needs, whether it’s a direct replacement for an older 5.9L or a fuel transfer pump for industrial use. The Rareelectrical mechanical pump is ideal for classic Dodge trucks, while the GevLtty 12V pump suits broader applications.

For injector-related issues, the GevLtty single or two-pack injectors are solid choices. Always verify compatibility with your engine’s part numbers. We hope this guide helps you find the right fuel system component for your Cummins diesel.