CATEngine Parts

148-4637 Planetary Carrier — Cat

Name: 148-4637 Planetary Carrier — Cat
Brand: CAT
SKU: 148-4637
Availability: InStock

This is a CAT Planetary Carrier, a critical component within the final drive or transmission system responsible for transmitting torque from the differential to the drive axle. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn or damaged carriers that exhibit excessive play or cracked housings. Operator symptoms of a failing planetary carrier include grinding noises during acceleration or deceleration, a noticeable loss of power, or a complete inability to drive the machine.

Planetary Carrier – Part No 148-4637 – CAT Spare Part

Part Specifications

Brand	CAT
Category	Engine Parts
Condition	Aftermarket — OEM Specification
Dispatch	Same-day from Mumbai (before 3 PM IST)
GST Invoice	Available — all orders
Export Docs	Commercial invoice, packing list, COO

Compatible Models

CAT Engine C7 1 C4 4 3066 C6 4 C4 2 Excavator 318C 318El 319C 319D 320C 320D

Always verify with serial number before ordering.

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Parts Trading Company · Mumbai, Est. 1956 · Same-day dispatch · Ships worldwide · GST invoice included

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Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Failure Symptoms

The first sign of a failing planetary carrier is often an audible grinding or whining noise that changes with vehicle speed. If ignored, this noise will increase in severity, accompanied by a gradual loss of drive power and potential for gear damage. Continued operation risks severe drivetrain damage, leading to costly repairs and extended downtime.

Installation Tip

Ensure the mating surfaces are meticulously clean before installation to prevent seal damage. Avoid overtightening fasteners, as this can distort the carrier housing and lead to premature failure.

Service Note

Inspect all gears, bearings, and seals within the final drive or transmission assembly for wear or damage when replacing the planetary carrier.

Part Type	Planetary Carrier
Material	Forged steel
Application	Final drive/Transmission
Service Life	Replace as needed based on inspection
Compatibility	OEM specification
Condition	New — OEM specification aftermarket

148-4637 Planetary Carrier — Cat

Compatible Models

Related CAT Parts

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Installation & Application Notes

Failure Symptoms