Product Description
The CUMMINS 3914460 OEM FAN HUB PULLEY is the genuine Cummins replacement used on second-gen Ram 2500/3500 trucks with the 5.9L Cummins diesel. This pulley drives the mechanical cooling fan via the accessory belt, restoring proper belt alignment and helping your engine maintain stable temperature under towing, heavy-load, and hot-weather conditions.
When the original pulley is bent, rusty, or out of round, you’ll see belt squeal, wobble, and premature belt wear. Bolting on this genuine Cummins pulley puts the fan back on the correct centerline and keeps your serpentine belt running true—no guessing with off-brand parts.
Key Features & Benefits
- Genuine Cummins 3914460 fan hub pulley – not an aftermarket copy.
- Direct-fit for 1994–2002 Ram 2500/3500 with 5.9L 12V or 24V Cummins (where 3914460 is specified).
- Restores OE belt tracking and fan alignment to reduce squeal and belt walk-off.
- Durable OE casting built for diesel vibration, heat, and heavy-duty use.
- Ships from CPP Diesel with Cummins-focused tech support and matching front-drive parts in stock.
Fitment – 1994–2002 Ram 5.9L Cummins
- Engine: 5.9L Cummins B-series diesel (12-valve & 24-valve)
- Truck Platforms: Dodge / Ram 2500 & 3500, 2WD & 4WD
- Model Years (truck): 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
- Position: Fan hub pulley on front of engine (mechanical cooling fan drive)
Always verify 3914460 against your VIN or engine serial number (ESN) and existing part before ordering, especially if front-drive components have been swapped or upgraded.
What This Part Does
The fan hub pulley transfers drive from the crankshaft via the serpentine belt to the mechanical fan hub. If the pulley is bent or worn, the belt no longer runs true, which can cause:
- Belt squeal, especially on cold start or with A/C on.
- Visible pulley wobble and fan runout.
- Abnormal belt wear and fraying.
- Reduced cooling performance under load.
Replacing the damaged pulley with genuine Cummins 3914460 restores the factory belt path and fan speed, protecting both the belt and the cooling system.
Related Cummins Cooling & Front-Drive Parts (Cross-References)
While you’re servicing the front of the engine, CPP Diesel stocks other genuine Cummins parts that pair perfectly with the 3914460 fan hub pulley:
- CUMMINS 5333499 OEM BELT TENSIONER ASSEMBLY – 5.9L CUMMINS (1989–2002) – keeps serpentine belt tension within OE spec to prevent slip and squeal.
- CUMMINS 3924435 OEM HARMONIC BALANCER (VIBRATION DAMPER) – 5.9L 12V (1994–1998) – restores front-end torsional damping on early 12V trucks.
- CUMMINS 3910739 OEM FAN HUB BEARING – RAM 5.9L/6.7L (1989–2018) – OE bearing that supports the fan hub and pulley assembly.
- CUMMINS 5473238 OEM WATER PUMP KIT – 5.9L/6.7L (1989–2012) – genuine Cummins pump for reliable coolant circulation.
- CUMMINS 3906698 OEM WATER PUMP RECTANGULAR RING SEAL – 5.9L/6.7L (1989–2018) – OE seal between water pump and block; replace anytime the pump is off.
All links above go to genuine Cummins or Cummins-focused products on CPPDiesel.com for a fully matched front-drive and cooling system solution.
What’s In The Box
- (1) Genuine Cummins Fan Hub Pulley – Part #3914460
- Fan hub, bearing, hardware, belt, and fan clutch/blade are sold separately.
Installation Notes
- Support the fan and hub assembly before loosening the pulley fasteners.
- Inspect the fan hub bearing (3910739), belt tensioner (5333499), belt, and idlers while you’re in there.
- Torque all fasteners to OE spec and verify the belt is centered in each pulley groove.
- After installation, start the engine and visually confirm fan and pulley runout are within normal range.
FAQ
WILL THIS FIT MY 1994–2002 5.9L CUMMINS RAM?
Yes. This OE Cummins 3914460 pulley is used on 1994–2002 Ram 2500/3500 trucks with the 5.9L Cummins where 3914460 is the cataloged fan hub pulley. Always confirm by VIN/ESN or existing part number before ordering.
IS THIS THE PULLEY ONLY OR THE COMPLETE FAN HUB ASSEMBLY?
This listing is for the pulley only. The fan hub bearing and hub assembly are sold separately (see genuine CUMMINS 3910739 FAN HUB BEARING and hub assemblies listed elsewhere on CPP Diesel).
DOES THIS PULLEY WORK WITH BOTH 12-VALVE AND 24-VALVE 5.9L CUMMINS?
Yes. 3914460 is used on second-gen Ram 5.9L B-series applications across 12V and 24V engines where this part number is specified for the fan hub pulley. Always compare against the OE part removed from the truck.
WHAT SYMPTOMS POINT TO A BAD OR BENT FAN HUB PULLEY?
Common signs include belt squeal, visible pulley or fan wobble, abnormal belt wear, cooling performance issues at idle or low speed, and belt walk-off under load. If the fan clutch, hub, and belt are in good shape, the pulley is often the next culprit.
IS THIS A GENUINE CUMMINS PART?
Yes. CPP Diesel supplies the genuine CUMMINS 3914460 fan hub pulley sourced through Cummins channels so you get factory geometry, material, and balance for long service life.
DOES THIS PART AFFECT EMISSIONS OR REQUIRE ANY E-CERTIFICATION?
No. This is a service replacement mechanical drive component for the cooling system. It does not alter engine calibration or emissions controls.
Specifications for cummins 3914460
| Attribute | Value |
|---|---|
| Brand | Cummins |
| Part Number | 3914460 |
| Application / Engine | 5.9L Cummins B-series diesel (12V & 24V) – second-gen Ram 2500/3500 and select B-series/industrial uses |
| Vehicle Platform | 1994–2002 Dodge / Ram 2500 & 3500 (where equipped with 5.9L Cummins and fan pulley 3914460) |
| Pulley Type | Engine cooling fan hub pulley – multi-groove serpentine belt drive |
| Material | OE steel or cast metal construction (per Cummins spec) |
| Finish | Factory protective coating (finish may vary by production batch) |
| Shipping Weight | Approx. 1.77 lb (0.80 kg) as listed in Cummins catalog data |
| Package Dimensions | Approx. 3.00 in (W) × 6.63 in (H) × 6.00 in (D) – CPP Diesel boxed dimensions |
| UPC | Not specified (no official UPC published by Cummins for 3914460) |
| GTIN / EAN | Not specified (check with Cummins dealer if a GTIN is required) |
| Cross Reference | Catalog / interchange references can include 3911669, 4429669, and NSN 3020-01-318-2784; always verify dimensions and application before use. |
| E-Codes / Emissions | Service replacement cooling-system drive component; does not alter emissions calibration. |
| Prop 65 Warning | May contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. See P65Warnings.ca.gov for more information. |
