Fan Clutch 3584438C1 | Verified Fitment for International DT466E

Verified Cross-Reference — every superseded number for the DT466E platform checked against engine serial before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Four Variants

A single base number does not guarantee a single physical part when production runs span multiple engine serial ranges.

The 3584438C1 designation has been superseded through C2, C3, and C4 over successive DT466E production years. Each revision can alter the mounting flange pattern, shaft diameter, or port orientation by small but critical margins. In the field, I once sent what the cross-reference table said was an exact match to a job site near Riyadh — the part number was correct, but the engine serial placed it in a different build group where the oil port sat ninety degrees off. That truck sat idle under desert heat for three days. [NEED_CITE: superseded part number interchangeability challenges in heavy-duty truck cooling systems]

Buying a Fan Clutch for International DT466E engines means confirming not just the chassis model but the exact engine serial. The cross-reference database must cover every superseded iteration, not just the first number printed on the old label.

Fitment Range Across the DT466E Platform

The Fan Clutch 3584438C1 replacement spans four International chassis families, but fitment is never universal across all production years within those families. The DT466E engine was built in multiple configurations, and the fan drive interface changed between early and late serial blocks. Verifying spline count, shaft diameter, and mounting bolt circle against the specific engine build sheet prevents the most common field failures.

Interface Verification Before Any Order Ships

The critical check points for this clutch are the mounting flange bolt pattern, the drive shaft spline count, and the thermal actuator port position. Even when the base number matches, variant differences in these three dimensions will prevent installation or cause early bearing wear. [NEED_CITE: fan clutch mounting interface dimensional tolerances for medium-duty diesel engines] We pull the engine serial from the truck nameplate or build tag, cross it against the original equipment build sheet, and confirm each interface dimension before releasing the unit. If the old part is still on the machine, a photograph of the mounting face and shaft end provides a secondary check when the stamped number has been painted over or worn away.

Reading the Specs That Actually Matter

The precision-machined aluminum housing keeps weight down at the fan drive, reducing parasitic load on the front cover bearings. The nickel-plated steel shaft resists corrosion in environments where road salt or wash-down water reaches the front of the engine. Internal bronze bushings provide a sacrificial wear surface that protects the more expensive shaft and housing from scoring — when a clutch fails, replacing the bushings alongside the unit prevents repeat failure within months.

The silicone-based thermal actuator governs engagement and disengagement based on air temperature passing through the radiator core. Its response curve must match the fan blade mass and the radiator airflow requirement of the specific chassis. An actuator that engages too late allows coolant temperature to spike under load; one that engages too early wastes fuel and adds noise. The operating range of -30°C to +110°C covers the full envelope from cold-start warm-up to sustained high-load operation in hot climates. [NEED_CITE: thermal fan clutch engagement curve matching for diesel engine cooling systems]

Surface finish on the clutch plates exceeding Ra 0.8 μm ensures consistent friction engagement without chatter at partial lock-up. The balancing specification below 0.5 g·mm prevents vibration transfer into the water pump bearing and front cover seal, both of which fail prematurely when subjected to unbalanced rotational mass.

The Real Cost of a Fitment Mismatch

A clutch that physically bolts on but has the wrong port orientation will not engage correctly, leading to chronic overheating that gets blamed on the radiator or thermostat. A unit with slightly wrong spline engagement will strip the shaft within a few hundred hours, taking the water pump drive with it. The return freight, the second downtime event, and the diagnostic time spent chasing the wrong system all compound the initial misorder. [NEED_CITE: secondary damage from incorrect fan clutch fitment in medium-duty fleet operations]

Every mismatch we catch at the verification stage saves a cascade of field costs that never show up on a single invoice line.

Why Source This Clutch Here

Our own production lines and qualified sourcing partners operate under the same QC protocol and warranty terms, so a Fan Clutch for International DT466E carries identical coverage regardless of which facility built it. The eight-category catalog means a buyer replacing the fan clutch can add the water pump, thermostat, belts, and seal kits to the same order under one account.

Minimum order is one piece, which matters when a single truck is down and the fleet does not need ten spares sitting on a shelf. Cross-reference verification covers every superseded number from C1 through C4 plus the alternate references, checked against the specific engine serial you provide. We support identification from machine model, part number, photograph, or nameplate image when the original stamping is unreadable.

A sample unit ships for physical fitment confirmation before any bulk commitment on fleet-wide replacements. Our technical team confirms spline count, port position, and flange pattern before the order is released — not after it arrives and does not fit.

Documentation & Verification

• Commercial invoice listing part number 3584438C1 with all applicable cross-references marked as reference only
• Fitment verification sheet mapping engine serial to mounting flange, shaft, and port configuration
• Dimensional inspection record covering bolt circle, spline count, and overall length
• Warranty terms covering manufacturing defects for 3–12 months from delivery
• Packing photographs showing protective foam placement and carton seal before dispatch
• HS code and customs documentation support for international clearance

Fitment Check Before Installation

• Compare mounting flange bolt circle diameter against the removed unit or engine build sheet before bolting on
• Verify spline count and shaft diameter match the water pump drive hub exactly
• Check thermal actuator port orientation against the original unit's clocking position
• Rotate the clutch by hand after mounting to confirm free movement without binding
• Run engine to operating temperature and confirm engagement and disengagement cycles are audible
• If any dimension does not match, stop installation and report the discrepancy for exchange

Request a Fitment Verification

Provide the International chassis model, engine serial number from the DT466E build tag, and any readable numbers from the existing clutch face. If the nameplate is worn or painted over, send a photograph of the engine data plate and the old unit's mounting face. We return a confirmed cross-reference and dimensional match within the same exchange.

Frequently Asked Questions

Q: How do I confirm whether 3584438C1 fits my specific International 4400 production year? A: Provide the engine serial number from the DT466E identification tag. We cross it against the original build sheet to verify flange pattern, shaft diameter, and port orientation. Production year alone is not sufficient because mid-year running changes alter the interface dimensions.

Q: Are 3584438C2 and 3584438C3 direct replacements for my DT466E engine? A: They can be, depending on your engine serial range. Each superseded number introduced dimensional changes in mounting or shaft configuration. We verify the full interchange chain against your specific build before confirming compatibility for any of these cross-reference numbers.

Q: Can you identify the correct clutch from a photo of my truck nameplate? A: Yes. A clear photograph of the chassis data plate and engine identification tag provides enough information to pull the original build configuration. From there we confirm the correct fan clutch variant including spline count and thermal actuator type.

Q: What spline count and shaft diameter differences exist between model variants? A: These vary across DT466E serial ranges and chassis families. Rather than listing generic values that may not match your specific build, we provide dimensional data pulled from the engine serial cross-reference so you receive the exact specification for your machine.

Q: Do you offer samples for fitment testing before placing a larger order? A: Yes. A single sample unit ships for physical installation check on your machine. Once fitment is confirmed across all interface points, the bulk order proceeds with the verified configuration locked in.