Cat CX31 Transmission | Caterpillar 6-Speed Automatic Commercial

Description

About the Cat CX31 Transmission (Caterpillar 6-Speed Automatic, Commercial)

Need a replacement Caterpillar CX31 transmission? Part Nests sources OEM used CX31 6-speed automatic transmissions for Caterpillar CX31 commercial applications. The Caterpillar CX31 is Caterpillar’s commercial 6-speed automatic transmission – part of Caterpillar’s CX transmission family used across various Caterpillar heavy-equipment and on-highway truck applications. Represents Caterpillar’s approach to modern commercial 6-speed automatic transmission engineering with electronic control integration for heavy-equipment and heavy-truck applications. Electronically controlled transmission – must be matched to the engine ECM (Engine Control Module) and various vehicle control systems for correct integration. Host machine and engine verification per the source data – confirm the exact machine or truck and the CAT engine at order. Different specific host applications have distinct configuration requirements – specific machine / truck and CAT engine pairing must be verified for correct application match. Configuration verification per the source data – mounting, input and output, and control module by serial number. Serial number-based configuration identification for correct application match. Rebuild and test history per the source data – for a high-value used unit, rebuild and test history documentation is available. Host applications per the source data – various Caterpillar machines (per live application list) and various on-highway trucks (per live application list) – confirm specific application by serial. Related Caterpillar context via our related Caterpillar 3304 Engine, Caterpillar 3408 Engine, Caterpillar 3176 Engine, Caterpillar 3204 Engine, Caterpillar 3412 Engine, and Caterpillar 3208 Marine Engine listings for related Caterpillar heavy-equipment / commercial engine applications. Not included: engine, ECM, wiring, cooler, driveline, fluid, and any control module or software unless confirmed. Commercial driveline installation ONLY – the CX31 is electronically controlled and must be matched to the engine ECM and vehicle controls by a qualified heavy-equipment or heavy-truck technician. Each transmission is serial-verified with rebuild and test history documented per unit. Call (855) 634-4447 to verify Cat CX31 serial number, host machine / truck, CAT engine, and control module configuration before ordering.

Configuration, Serial, and Host Verification

What Is Included and Not Included

Caterpillar CX31 Transmission Context (Commercial 6-Speed Automatic)

• Caterpillar CX31 commercial transmission: The Caterpillar CX31 is Caterpillar’s commercial 6-speed automatic transmission – part of Caterpillar’s CX transmission family used across various Caterpillar heavy-equipment and on-highway truck applications. Represents Caterpillar’s approach to modern commercial 6-speed automatic transmission engineering
• CX transmission family: The CX31 is part of Caterpillar’s CX transmission family. Family includes various commercial transmission configurations used across various Caterpillar heavy-equipment applications during various eras. Distinctive Caterpillar commercial transmission engineering approach with electronic control integration
• 6-speed automatic architecture: The CX31 uses 6-speed automatic transmission architecture with electronic control integration. Represents commercial-grade 6-speed automatic transmission engineering appropriate for demanding heavy-equipment and heavy-truck applications
• Electronically controlled integration: Per the source data tools note, the CX31 is electronically controlled and must be matched to the engine ECM and vehicle controls. Critical integration requirement – the CX31 requires correct electronic integration with the engine ECM (Engine Control Module) and various vehicle control systems for correct transmission operation. Not a simple mechanical installation
• Host machine and CAT engine verification: Per the source data host machine and engine, confirm the exact machine or truck and the CAT engine. Critical verification – specific host machine (or truck) identification and CAT engine pairing verification for correct application match. Different specific host applications have distinct configuration requirements

Configuration Verification and Rebuild History Context

• Mounting configuration: Per the source data configuration, mounting, input and output, and control module by serial. Different specific applications may have different specific mounting configurations – transmission-to-engine mounting interface and transmission mounting to vehicle chassis. Verify mounting configuration by serial
• Input and output configuration: Different specific applications may have different specific input configurations (torque converter / input coupling to specific CAT engine) and output configurations (output shaft / driveline coupling to specific vehicle driveline). Verify input and output configuration by serial for correct application match
• Control module configuration: Per the source data configuration, mounting, input and output, and control module by serial. Control module (electronic transmission control module) configuration verification by serial. Different specific applications may have different specific control module configurations – verify at order
• Rebuild and test history: Per the source data history, rebuild and test history for a high-value used unit. Rebuild and test history documentation is available for the used CX31 unit – given the high-value commercial transmission nature. Documentation of previous rebuild work and test verification provides critical service history context for used commercial transmission applications
• Serial-verified per unit: Serial number-based configuration verification is the primary identification approach for correct CX31 application match – critical for commercial transmission applications

Host Applications and Commercial Installation Context

• Caterpillar machine applications: Per the source data compatibility, Caterpillar machines – various (per live list); confirm by serial. Various Caterpillar heavy-equipment applications may use the CX31 transmission – the specific list of applications is maintained on the live application list. Confirm specific Caterpillar machine application by serial at order
• On-highway truck applications: Per the source data compatibility, on-highway trucks – various brands (per live list); confirm by configuration. Various on-highway heavy-truck brand applications may use the CX31 transmission – the specific list of applications is maintained on the live application list. Confirm specific truck brand application by configuration at order
• Multi-brand on-highway compatibility: The CX31 transmission has been used across various on-highway truck brands during the era – representing Caterpillar’s approach to commercial transmission market beyond just Caterpillar-branded machines. Multi-brand on-highway truck compatibility with specific application verification required
• Commercial driveline installation: Per the source data tools note, commercial driveline installation only. Critical installation requirement – CX31 installation requires commercial driveline installer with heavy-equipment or heavy-truck driveline service capability. Not a general shop project
• Qualified heavy-equipment or heavy-truck technician: The CX31 is electronically controlled and must be matched to the engine ECM and vehicle controls by a qualified heavy-equipment or heavy-truck technician. Qualified technician with electronic transmission control integration capability required
• Not included items: Per the source data, engine, ECM, wiring, cooler, driveline, fluid, and any control module or software are not included unless specifically confirmed in writing. Standard scope – the used CX31 transmission as confirmed by serial is provided. Additional items (engine, ECM, wiring harness, transmission cooler, driveline components, transmission fluid, control module, software) are separate items

Related Caterpillar / Related Commercial Transmission Listings

• Caterpillar 3304 Engine: Related Caterpillar 3300-series application (Cat 3304 4-cylinder ~7.0L industrial diesel) – see our Caterpillar 3304 Engine listing
• Caterpillar 3408 Engine: Related Caterpillar 3400-series application (Cat 3408 18L V8 industrial / marine diesel) – see our Caterpillar 3408 Engine listing
• Caterpillar 3176 Engine: Related Caterpillar 3100-series application (Cat 3176 7.2L inline-6 truck / industrial / marine diesel) – see our Caterpillar 3176 Engine listing
• Caterpillar 3204 Engine: Related Caterpillar 3200-series application (Cat 3204 4-cylinder industrial diesel) – see our Caterpillar 3204 Engine listing
• Caterpillar 3412 Engine: Related Caterpillar 3400-series V12 application (Cat 3412 V12 industrial / marine / genset diesel) – see our Caterpillar 3412 Engine listing
• Caterpillar 3208 Marine Engine: Related Caterpillar 3200-series marine application (Cat 3208 10.4L V8 marine diesel 3208N naturally aspirated) – see our Caterpillar 3208 Marine Engine listing
• Various Caterpillar / commercial transmission / heavy-equipment replacement components available across our Part Nests catalog

Transmission Specifications

• Type: OEM used Caterpillar CX31 6-speed automatic transmission for commercial applications
• Function: CX31 6-speed automatic transmission provides electronically controlled transmission capability for Caterpillar heavy-equipment and on-highway truck applications
• Configuration: 6-speed automatic; various mounting / input / output / control module configurations – verify by serial and host application
• What is not included: Engine, ECM, wiring, cooler, driveline, fluid, and any control module or software, unless confirmed in writing per the source data
• Tools required: Commercial driveline installation only (qualified heavy-equipment or heavy-truck technician with electronic control integration capability) per the source data
• Common failure modes: Various commercial transmission wear patterns, electronic control integration issues, various age-related component wear
• Testing: Serial-verified, rebuild and test history documented per unit before shipment

Vehicle Compatibility

Why Buy From Part Nests

• OEM verified Caterpillar CX31 6-speed automatic transmission for commercial applications
• Serial-verified, rebuild and test history documented per unit
• Support for host machine / truck and CAT engine verification
• Support for mounting / input / output / control module configuration verification by serial
• Support for electronic control integration with engine ECM and vehicle controls
• Support for multi-brand on-highway truck compatibility (per live list)
• Support for rebuild and test history documentation for high-value used unit
• Support for commercial driveline / qualified heavy-equipment or heavy-truck technician installation requirement
• Related to broader Caterpillar 6-engine block and commercial transmission listings
• Freight-forwarded to all 50 states with rigging (commercial delivery)
• 15 day replacement warranty on component defects
• Support team familiar with Caterpillar CX transmission family commercial applications and electronic integration considerations
• Call (855) 634-4447 to confirm your Cat CX31 serial number, host application, and configuration before ordering.