3512E DGB Tier 4 Final

Land Well Service 3512E Dynamic Gas Blending dual fuel Engine


The new land well service 3512E Dynamic Gas Blending™ dual fuel engine will be certified to U.S. EPA Tier 4 Final emissions standard while offering the highest natural gas substitution in its class. The 3512E DGB will include factory solutions that emit approximately the same or less greenhouse gas (GHG) emissions as a comparable 3512E Tier 4 Final diesel engine. Additionally, the dual fuel performance of the new 3512E DGB has significantly increased compared to similar engines in its class with the ability to achieve 85% diesel displacement, further allowing for lower operating costs.

Maximum Rating

2500 BHP / 1864 bkW


U.S. EPA Tier 4 Final


3596 in³ / 58.9 l

Engine Design

  • Proven reliability and durability
  • Robust diesel strength design prolongs life and lowers owning and operating costs
  • Broad operating speed range
  • Air shutoff – integrated with engine controls
  • EGR/Diesel Oxidation Catalyst (DOC)/common rail fuel system to meet Tier 4 Final/Stage IV emission standards
  • DEF free solution – eliminates the storage, logistics, and issues involved with SCR/DEF design engines
  • Individual cylinder based gas injection system.
  • Engine mounted DGB controls.
  • Engine mounted Gas filter, water coalescing type

Cooling System

Separate Circuit Aftercooler (SCAC) and Air-to-Air-Aftercooler (ATAAC)

Engine-Mounted Package

Integrates with engine, aftertreatment, heavy-duty air cleaners, residential grade mufflers available in stainless or carbon steel

Engine-Mounted Transmission Oil Cooler

Integration with engine cooling system allows ease of installation and a tighter overall engine package

Advanced Digital Engine Management

ADEM A6 DGB based controls seamlessly integrated with A5 engine management system.

Custom Packaging

For any petroleum application, trust Caterpillar to meet your exact needs with a factory custom package. Cat engines, generators, enclosures, controlsCustom Packaging , radiators, transmissions – anything your project requires – can be custom designed and matched to create a one-of-a kind solution. Custom packages are globally supported and are covered by a one-year warranty after startup.

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time


Every engine is full-load tested with diesel fuel and with natural gas to ensure proper engine performance.

Product Support Offered Through Global Cat Dealer Network

  • More than 2,200 dealer outlets
  • Cat factory-trained dealer technicians service every aspect of your petroleum engine
  • Cat parts and labor warranty
  • Preventive maintenance agreements available for repair-before-failure options

S•O•SSM program matches your oil and coolant samples

  • Internal engine component condition
  • Presence of unwanted fluids
  • Presence of combustion by-products
  • Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.

  • Cast engine blocks, heads, cylinder liners, front and flywheel housings
  • Machine critical components
  • Assemble complete engine

Web Site

For all your oil & gas power requirements, visit: www.cat.com/oilandgas

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • Control System
    • Cat ADEM A6 DGB controls
  • Cooling System
    • Thermostats and housing, jacket and separate circuit water pump, gear-driven centrifugal
    • SCAC/ATAAC system
  • Exhaust System
    • Dual DOC
    • Exhaust manifold, dry, bellows connection
    • Four turbochargers with watercooled bearings
    • Exhaust outlet, dual 10-inch ANSI round flange as part of aftertreatment
  • Flywheels & Flywheel Housing
    • Flywheel, SAE No. 0, 151 teeth
  • Fuel System
    • Engine mounted Gas filter, water coalescing type
    • Clean fuel module boost pump
    • Fuel transfer pump
    • Common rail fuel system
    • Primary/secondary fuel filters
    • Fuel priming pump (electric)
  • Instrumentation
    • Product LinkTM engine monitoring
  • General
    • Vibration damper and guard
    • Lifting eyes
    • Paint - Caterpillar yellow
  • Lube System
    • Closed Crankcase ventillation - top mounted
    • Fumes disposal
    • Oil filter - RH spin-on type
    • Oil cooler
    • Oil filler and dipstick - LH
    • Oil scavenger pump
    • Oil pump
    • Oil pan drain valve, 1" NPT female connection
  • Mounting System
    • Trunion front support
    • Flywheel housing - two-sidedfailure options
  • Protection System
    • Emergency stop logic inputs provided at 70-pin customer interface connection
    • ADEM A5 and A6 ECU system to provide customer programmable engine deration strategies to protect against adverse operating conditions
  • Aftertreatment Mounting
    • CEM/muffler support package Heavy-duty air cleaners (2 element with precleaners)

Optional Equipment

  • Charging System
    • 80, 95, or 150 amp charging alternator
  • Control System
    • Local speed throttle control
    • Throttle position sensors
  • Cooling System
    • Coolant conditioner
    • JW outlet coupling-style connections
    • JW inlet weld-flange connection
    • SCAC/ATAAC inlet and outlet coupling-style connections
    • JW inlet and outlet hose barb connections
    • SCAC/ATAAC inlet and outlet hose barb connections Water level switch gauge
    • JW Heater installation connections
  • Exhaust System
    • Flex pipe kit
    • Residential mufflers (painted steel and stainless steel) with outlet elbow and rain cap
  • Flywheels & Flywheel Housing
    • Allison and Twin Disc flywheel options
  • Instrumentation
    • Product Link harness extensions
    • LAN adapters
  • Lube System
    • Rear sump oil pan - 250-hour change interval
    • Front deep sump oil pan - 500-hour change interval
  • Power Take-Offs
    • Front Crankshaft Adapter
    • Front crankshaft stub shaft
    • Accessory drive - upper RH
  • Protection System
    • Hydraulic actuated air shutoff
  • Starting System
    • Dual hydraulic starter - LH
    • Manual engine barring device
    • Hydraulic starter - LH
    • EIRS automatic start/stop system is available on factory orders as an attachment
  • Transmission Attachments
    • Transmission oil cooler
    • Transmission oil cooler 2-1 connections
    • Torque converter connections
  • General
    • Air compressor



Long Name:
Land Well Service 3512E Dynamic Gas Blending dual fuel Engine
3512E DGB Tier 4 Final

General Specifications

Maximum Rating
2500 BHP / 1864 bkW
3596 in³ / 58.9 l
Minimum Rating
2250 BHP / 1678 bkW
Flywheel and Flywheel Housing
SAE No. 0
Flywheel Teeth
8.5 in / 215 mm
6.7 in / 170 mm


U.S. EPA Tier 4 Final


138 in / 3494 mm
91 in / 2308 mm
108 in / 2747 mm
22352 lb / 10139 kg

General Specifications

Governor and Protection
Electronic (ADEM™ A5) / DGB System (ADEM™ A6)

Capacity for Liquids

Lube Oil System - Refill
52 gal (US) / 170 l

General Specifications

Rotation from Flywheel End

Capacity for Liquids

Cooling System
52 gal (US) / 197 l