CAT Coolant Filter 435-5142 Advanced High Efficiency — OEM-fit cartridge, extends coolant life

The CAT 4355142 (435-5142) Advanced High Efficiency Coolant Filter is a factory-compatible coolant filtration cartridge engineered to protect cooling systems in a wide range of Caterpillar engines and heavy equipment.

This coolant filter replaces part number 435-5142 and is designed for use across many Caterpillar applications — from marine and generator sets to excavators, trucks, road reclaimers and articulated haulers. It’s built to trap contaminants and extend coolant service life in demanding operating conditions while matching form, fit and function for CAT service intervals and maintenance practices.

Which Caterpillar engines and machines use this coolant filter?

The 435-5142 filter is cross-referenced to numerous CAT engine models and equipment platforms, making it a common spare for mixed fleets. It covers marine, petroleum, industrial and truck applications as well as specific machine families such as excavators, cold planers and road reclaimers.

• Compatible with C18, C27, C32, C15 and multiple 3300/3400-series engines
• Used on generator sets like 3512B/C and industrial engines such as 3508B
• Serviceable on machines including AD30/AD45B articulated haulers and PR-1000 cold planers

How does this coolant filter help maintain a cooling system?

This cartridge is designed to remove particulate and help maintain coolant cleanliness, reducing the risk of flow restriction and localized overheating caused by contamination. By fitting OEM specifications, it preserves system pressure and coolant circulation required for reliable operation.

• Traps suspended particles and rust to protect pumps and heat exchangers
• Maintains consistent coolant flow and system pressure in heavy-duty use
• Fits OEM housings for straightforward replacement during scheduled maintenance

What are the installation and maintenance considerations?

Installing the filter follows standard coolant cartridge replacement steps: depressurize the cooling system, remove the old cartridge, inspect sealing surfaces, and install the new filter with proper torque on the housing. Check coolant level and top up with the manufacturer-recommended fluid after replacement.

• Replace at manufacturer-recommended intervals or sooner in contaminated systems
• Use correct gasket/seal and verify housing threads and seating surfaces are clean
• Observe proper disposal of used coolant and filter per local regulations

Will this filter match OEM fit and performance?

The 435-5142 is produced to match CAT’s specifications for dimensions and sealing so it installs like the original part. Using a filter that conforms to OEM form, fit and filtration characteristics helps maintain warranty-aligned maintenance practices and system reliability.

• Designed to meet CAT dimensional and sealing requirements
• Allows straightforward swap with the original 435-5142 cartridge
• Reduces risk of leaks and improper seating when installed correctly

Who is this for: Fleet managers, maintenance technicians and equipment owners who operate Caterpillar engines across marine, industrial, petroleum and construction uses will find the CAT 4355142 coolant filter a direct-fit replacement. It’s suited to operations that require dependable, OEM-compatible filtration to support routine service schedules and minimize unplanned downtime.

• Features: 435-5142 COOLANT FILTER