CATTransmission Parts

8i-4357-121-7438 Torque Converter Assembly — Cat TH62 TH63

This Torque Converter Assembly is a hydraulic coupling that transfers rotating energy from the engine to the transmission, allowing for smooth acceleration and load management. It is built to meet rigorous OEM standards, offering superior fluid dynamics and durability over a worn unit with internal seal leaks or damaged impeller fins. Operators might experience delayed engagement, shuddering during acceleration, or a noticeable decrease in power transfer if this component is failing.

Torque Converter Assembly – Part No 8i-4357-121-7438 – CAT Spare Part
Part Specifications
BrandCAT
CategoryTransmission Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Drain and replace transmission fluid when servicing internal components. Use correct ATF specification. Pre-fill torque converters with fluid before installation. Allow 10 minutes for fluid to settle before checking level.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeTorque Converter Assembly
MaterialCast Aluminum and Steel
ApplicationTransmission System
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early failure may present as a noticeable shudder or vibration when accelerating from a stop. If left unaddressed, this can progress to delayed or harsh gear shifts and a significant loss of power to the drivetrain. Continued operation risks overheating the transmission fluid and damaging other drivetrain components.

Installation Tip

Ensure the torque converter is fully seated onto the transmission pump drive before bolting it to the flywheel. Failure to do so can damage the pump shaft.

Service Note

Always replace the transmission filter and flush the transmission cooler lines when installing a new torque converter.