What The 3034217 Does
The 3034217 is a gear-type fuel transfer pump. It pulls fuel from the tank, through the suction line and filters, and pushes it into the injection system at the volume the engine needs. It is gear-driven off the engine, so it only makes pressure when the engine turns. No cam turn, no fuel flow.
This is the right-hand (RH) configuration. Configuration matters more than most people expect. The mounting flange, the drive orientation, and the port positions have to match the housing already on the engine, or the lines will not land where they need to land. Confirm you are replacing an RH unit before you order.
Inside, the machined gear set is sized to the original transfer-volume specification. That is the number that keeps the rest of the fuel system fed. An undersized or worn gear set will start the truck fine on a cool morning and then fall on its face under load, which is why these failures get misdiagnosed as filters or injectors.
Why These Numbers Cross
PAI 180110 is listed against 3034217 because both describe the same physical part: an RH gear fuel transfer pump built for the N14 and NT855 fuel system. Same mount pattern, same drive engagement, same port arrangement, same transfer-volume target. Different manufacturer, different catalog, same job on the engine.
Cross-reference numbering in this category exists because the pump housing family stayed consistent across a long production run. Aftermarket suppliers each assign their own number to a part that has to interface with that same housing. When the interface is fixed, the numbers converge on one component.
Treat the cross as a starting point, not a guarantee. Numbers get superseded, and engines get rebuilt with parts from more than one era. The reliable check is the number stamped or tagged on the pump you are pulling off, backed by your engine serial number. That is what confirms fit, not a catalog line.
Failure Signs And Checks
Typical symptoms are extended cranking, a rough or stumbling idle, power loss under load, and low fuel pressure at the gauge port. On a worn gear pump the clearances open up and internal leakage climbs, so the pump moves less fuel as demand goes up. Cold start may be the first place you notice it.
Before you condemn the pump, rule out the cheap stuff. Restricted or old fuel filters, a collapsed or cracked suction line, a loose fitting drawing air, a plugged tank pickup, or a sticking check somewhere upstream will all mimic a bad transfer pump. Air in the fuel is the classic false positive here.
3034217 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 3034217. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| PAI | 180110 |
Frequently asked questions
Is PAI 180110 the same pump as 3034217?
They are listed as cross-reference equivalents for the same RH gear fuel transfer pump used on the N14 and NT855. The mounting and port interface is the same. We list the other manufacturer's number for identification only. Verify against the number on your old pump and your engine serial before ordering.
How do I know if mine is a right-hand pump?
Look at the mount and the port orientation on the pump currently installed. This part is the RH configuration matching the factory mount for the N14 and NT855 fuel system. If your engine carries a different-hand unit, this is not the pump you want. Pull the old one and read the tag before ordering.
Will this work on a Big Cam NT855 in a Kenworth W900?
The application covers Cummins N14 and NT855 (Big Cam) engines used in Class-8 on-highway trucks including Kenworth W900 and T800 and Volvo VNL. That said, fitment is confirmed by your engine serial number or by the number on the pump you are replacing, not by truck model alone.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
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Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.