1T0611 Converter As Fits Caterpillar Models

One New Aftermarket Replacement Torque Converter Assembly for Caterpillar (Cat) Track-Type Tractors and Pipelayers

This aftermarket replacement torque converter assembly (1T0611 / 1T-0611) fits the power train / power transmission unit on Caterpillar D8, D9G, D9H, Dual D9H, Side-by-Side D9H track-type tractors and 594 / 594H pipelayers equipped with power shift transmissions. The torque converter is a critical drivetrain component that transmits and multiplies engine torque to the transmission, enabling smooth power delivery under heavy load conditions typical of large bulldozer and pipelayer applications.

Important: This part carries serial number restrictions. Confirm your machine serial number before ordering. Known fitment ranges are listed below.

Compatible Models

Caterpillar Track-Type Tractors:

• D8 Tractor (Power Shift) - Serial No. 46A03044-10724
• D8K Tractor (Power Shift) - Serial No. 77V04429-UP (Arrangement 1Z413); 77V05006-UP
• D9G Tractor (Power Shift) - Serial No. 66A00001-03265, 66A03266-09417, 66A09418-12015, 66A12016-UP
• D9H Tractor (Power Shift) - Serial No. 90V00001-UP (including 90V00001-04939 and 90V04940-UP; Arrangement 1Z434: 90V07190-UP) - Powered by D353 Engine
• Dual D9H Tractor - Serial No. 97V00001-UP
• Side-by-Side (SxS) D9H Tractor - Serial No. 12U00001-UP

Caterpillar Pipelayers:

• 594 Pipelayer (Power Shift) - Serial No. 62H00001-UP
• 594H Pipelayer (Power Shift) - Serial No. 96V00255-UP (including Arrangement 1Z420: 96V00385-UP) - Powered by D353 Engine

Replaces Part Number(s):

1T0611, 1T-0611, 1T611, 1T1399, 1T0010, 1T0011, 2351804, 235-1804

New aftermarket replacement part - not remanufactured, not used.