HOLT CAT® provides emissions reduction solutions as well as awareness and support of the ever-changing emissions compliance challenges. We support our customers' green initiatives by delivering sustainable solutions including emissions reduction technologies, new, clean emissions equipment and Cat® legacy machines and engines. We offer our customers cost-effective solutions that protect their investments while meeting challenging national, state, and local environmental emissions regulations, including:

HOLT CAT® provides emissions reduction solutions as well as awareness and support of the ever-changing emissions compliance challenges. We support our customers' green initiatives by delivering sustainable solutions including emissions reduction technologies, new, clean emissions equipment and Cat® legacy machines and engines. We offer our customers cost-effective solutions that protect their investments while meeting challenging national, state, and local environmental emissions regulations, including:

• Repowers (machine engine replacements);
• Engine upgrade kits (updating an engine with newer lower emissions components);
• Diesel particulate filters (85% or greater engine PM reduction);
• Diesel oxidation catalysts (85% Carbon Monoxide Reduction); and
• Leveraging recent engine and after-treatment advancements.

Let us help you determine which clean emissions products and services provide the right solution for your applications. We are committed to continue as the leader in providing aftermarket emissions solutions for Caterpillar® customers as well as a complete range of products, services and processes for the best economic solutions for customers' needs.

	Environmental Philosophy The HOLT CAT Environmental Philosophy is to provide solutions that protect people, preserve the planet and enable economic growth. Learn more about our environmental philosophy.

	Machine Emissions Solutions HOLT CAT offers a full line of Tier 4 Interim engines for every application--with optimized emissions solutions tailored for each application. Learn More

	On-Road Truck and School Bus Emissions Solutions HOLT CAT offers on-road emissions reductions solutions at a wide variety of price points to address particulate matter and nitrogen oxides emissions. Learn More

	Stationary Engine Emissions Solutions Stationary engine emissions can be reduced with diesel particulate filters, diesel oxidation catalysts, selective catalytic reduction, three-way catalysts and air fuel ratio controllers. Learn More

	Marine Emissions Solutions HOLT CAT offers Cat® Engine Upgrade Kits for select marine 3500 engines, providing significant benefits for your next overhaul. Two categories of solutions are offered including Cat Emissions Upgrade Kits and Cat Performance Upgrade Kits. Learn More

	Exchange Parts The use of exchange components reduces the consumption of resources that would have been used for manufacturing new parts, requires fewer additional parts for installation, speeds repairs and reduces your machine's downtime. Learn More

	Emissions Services HOLT CAT offers emissions analysis for non-road fleets to assist customers with understanding their environmental footprint and formulating emissions reduction plans. Learn More

	Scheduled Maintenance - Customer Service Agreements We offer tailored Customer Support Agreements to ensure equipment will run at top performance, reducing noise and emissions, conserving resources, reducing waste and ensuring EPA compliance with disposal of waste fluids and filters. Learn More