| Mainframe | The D8R mainframe is built to absorb high impact shock loads and twisting forces. |
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| Operator Efficiency | Smoother ride because no more link scalloping wear reduces operator fatigue and better operator efficiency. |
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| Work Tools | Tailored to fit many applications. | 
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| Undercarriage | An elevated sprocket design means excellent traction, durability and ride. | 
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| Suspension | Bogie suspension conforms closely to the ground to provide more ground contact, especially in hard, uneven terrain. |
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| SystemOne™ Undercarriage | Designed for reliability and durability. | 
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| Lower cost-per-hour | Reduces costs up to 50% due to longer life of undercarriage and reuse of idlers and segments. |
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| Machine Availability/Lower Downtime | More hours between UC replacements means reduced downtime. |
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| Machine Productivity | Higher average machine speed, better operator efficiency and better machine availability/lower downtime results in increased machine productivity. |
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| Seat | The Caterpillar Comfort Series Seat is fully adjustable and designed for comfort and support. |
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| Bulldozers | The 8SU blade and the 8U blade make full use of the D8R's power. |
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| Serviceability | Ease of service and maintenance gives you more time on the job. | 
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| Support | Unrivaled dealer commitment. | 
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| Power Train | The 3406C engine is an excellent balance between efficiency and power. | 
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| Engine | Caterpillar 3406C engine performs at full-rated net power with a torque rise of 55%. |
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| Regulations | The 3406C engine meets US Tier 1, and EURO Stage 1 emissions regulations for the Environmental Protection Agency, and the European Union. |
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| Turbocharging and Aftercooling | Turbocharging and aftercooling provide high horsepower while keeping RPM and exhaust temperatures low. |
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| Steel Spacer | A steel spacer between the block and head eliminates the need for block counterbores, extending block life. |
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| Longer Component Life | Components live longer because oil-cooled pistons and full-length water-cooled cylinder liners provide maximum heat transfer for longer component life. |
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| Valves | Through-hardened crankshaft journals and steel-backed, copper-bonded aluminum bearings help assure reliable performance in the toughest duty. |
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| Dealer's Exchange Program | Cat dealer's exchange program for major engine components can cut repair time and costs. |
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| Torque Divider | A single-stage torque converter with an output torque divider send 70% of engine torque through the converter, 30% through a direct drive shaft for greater driveline efficiency and higher torque multiplication. | 
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| Torque Converter | The torque converter shields the driveline from sudden torque shocks and vibration. |
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| Final Drives | Elevated final drives are isolated from ground and implement induced impact loads for extended power train life. |
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| Cooling System | Superior cooling and ease of service keep the D8R producing day after day. | 
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| Differential Steering | Uses hydraulics instead of friction to steer. | 
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| Steering | Steer and change directions easily with one hand. |
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| Hydraulics | Adjustable for efficiency. | 
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| Structures | Durable design and construction for the most demanding applications. | 
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| Transmission | Planetary power shift transmission has 3-speeds forward and 3-speeds reverse and utilizes large diameter, high-capacity, oil-cooled clutches. |
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| Cooling Capacity | Advanced Modular Cooling System (AMOCS) utilizes an exclusive two pass cooling system and increased cooling surface area to provide significantly more cooling capacity than conventional systems. | 
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| Extended Life Coolant | Caterpillar Extended Life Coolant (ELC) is now standard in all D8R tractors. |
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| Two Pass Cooling System | Two pass cooling system circulates coolant from the sectioned bottom tank up through one side of the cooling element and down through the other side returning it to the bottom tank. |
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| Cooling Elements | The cooling elements are individual core modules that are connected to a sectioned bottom tank. |
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| Servicing | The servicing of the AMOCS can be performed without tilting the radiator guard. |
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| Uninterrupted Power | Differential steering delivers uninterrupted power to both tracks to help maintain blade loads, reduce cycle times and provide enhanced side slope capability. |
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| Turning | A planetary differential turns the machine by speeding up one track and slowing the other while maintaining full power. |
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| Tiller Control | Allows the operator to work more precisely in close areas, around structures, obstacles, grade stakes or on fine grades. |
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| Efficient in Soft Underfooting | Tracks can power through turns to keep loads moving and maintain traction. |
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| Hydraulic System | Efficient hydraulic systems devote one pump solely to power implements. |
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| Monitor Hydraulic Power | Load-sensing hydraulics utilize a feedback loop from the implement valve to the implement pump to continually monitor the hydraulic power requirements of the implement. |
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| Pump Output | During normal blade or ripper corrections, pump output increases and decreases to provide precise power for dozing or ripping. |
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| Increased Machine Production | Lower pump requirements reduce engine power requirements for the hydraulics, making more drawbar power available for increased machine production. |
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| Frame Rails | Frame rails are a full box section, designed to keep components rigidly aligned. |
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| Steel Castings | Heavy steel castings give added strength to the main case, equalizer bar saddle, front cross member and tag-link trunnion. |
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| Durability | The top and bottom rails are continuous rolled sections, with no machining or welding to provide superior mainframe durability. |
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| Final Drives | The main case elevates the final drives well above the ground level work area to protect them from impact loads, abrasion and contaminants. |
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| Track Roller Frame Alignment | A pivot shaft and pinned equalizer bar maintain track roller frame alignment. |
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| Tag-link Construction | Tag-link construction brings the blade closer to the machine for more precise dozing and load control. |
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| Tag-link Design | Tag-link design provides solid lateral stability and better cylinder positions for constant pryout independent of blade height. |
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| Design | Suspended undercarriage design absorbs impact loads to reduce the shock loads transferred to the undercarriage. |
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| Roller Frames | Roller frames are tubular, to resist bending and twisting, with added reinforcement where operating loads are the highest. |
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| Non-suspended Undercarriage | Non-suspended undercarriage, without bogies, is available for applications involving moderate-impact, or highly abrasive materials. |
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| Track | Sealed and lubricated track. Permanently coats the track pin with a sealed-in lubricant, minimizing metal-to-metal contact. |
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| Optional SystemOne™ undercarriage offers a variety of features and benefits improving mechanical availability, overall performance of the undercarriage, wear life, and most importantly productivity. This enhanced version of SystemOne™ also addresses issues like thrust wear, sprocket segment retention, and dry joints. | 
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| Machine Speed | SystemOne™ allows travel at a faster speed, particularly in reverse. 2nd and 3rd gear reverse do not have to be locked out to manage bushing wear. Also, elimination of scalloping maintains a comfortable ride that decreases operator fatigue, and allows for higher working speed which increases overall productivity. |
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| Operator Station | Designed for comfort and ease of operation. | 
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| View | Clear full-circle view. |
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| Operation | Comfortable, non-tiring operation. |
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| Controls | Low effort controls are easily accessible and provide sure, precise maneuvering with less operator fatigue. |
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| Control Lever Restraints | Implement control lever restraints, when engages, prevent inadvertent movement of control lever. |
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| Tiller Control | Dual twist tiller controls the direction and degree of turns, forward-reverse shifting and gear selection with one control. |
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| Electronic Monitoring System (EMS) and Gauge Group | Monitors coolant, oil temperature, and fuel level. |
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| Rippers | Single and multi-shank rippers are made to penetrate tough material fast and rip thoroughly. |
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| Custom Products | In addition to the standard range of optional equipment, there are special attachments and machine configurations to suit particular customer needs. |
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| Servicing | Built-in servicing ease. Less service time means more working time. |
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| Ecology Drains | Ecology drains provide an environmentally safer method to drain fluids. |
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| Filters | Spin-on fuel and engine oil filters save changing time. |
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| Cooling | AMOCS individual cooling elements allow radiator servicing without major component removal, saving considerable time and cost. |
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| Diagnostic Connector | A diagnostic connector allows the Cat Dealer's electronic test instrument to quickly troubleshoot the electrical system. |
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| Disconnect Fittings | Quick disconnect fittings allow for fast diagnosis of the power train and implement oil systems. |
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| Quality | Dealers committed to fast, quality customer support. |
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| Response | Dealer service response extends to programs such as Custom Track Service (CTS), Scheduled Oil Sampling (SOS), and guaranteed maintenance contracts that get peak life and performance from your machine. |
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| Experts | Your dealer is also expert at arranging affordable lease, rental or purchase financing for all Caterpillar products. |
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