QSB4.5 (Tier 3)

Overview

QSB4.5 (Tier 3)

The Cummins QSB4.5 achieves Tier 3 and Stage IIIA compliance with in-cylinder technology that maintains a compact, simple installation that provides premium performance to every application.

The QSB4.5 makes every piece of construction equipment work harder, smarter, quieter and longer. Every time. It shares technology with the rest of our highly successful B Series, including charge air cooling and turbocharging for strong performance. Power ratings range from 110-170 hp (82-127 kW).

This engine combines proven full-authority electronic controls with the impressive reliability and durability and long maintenance intervals you expect from one of the world's most successful and durable designs.

Every QSB4.5 has improved cold-start capability and is 5-9 decibels quieter in operation than its predecessor. Plus, it runs as quietly at full load as the previous QSB did with no load! A wide range of features are standard.

To ensure that every QSB4.5 is perfectly matched to every piece of equipment, Cummins PowerMatch and Advisor are ready to provide expert assistance with your spec'ing and installation process.

Every QSB4.5 engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest plans in the industry.

Specifications

 

Engine Type In-Line, 4-Cylinder
Displacement 4.5 L* (275 cu in)
Advertised Horsepower 109-170 hp (81-127 kW)
Peak Torque 460 lb-ft (624 N•m)
Aspiration Turbocharged and Charge Air Cooled
Oil System Capacity 11.6 U.S. qt (11 L*)
Coolant Capacity 9 U.S. qt (8.5 L*)
Length 32.2 in (818 mm)
Width 28.1 in (713 mm)
Height 34.5 in (878 mm)
Wet Weight 818 lb (371 kg)

*L=Liters/Litres

Engine Finder Specifications

Markets
Certification Level Tier 3 / Stage IIIA
Power 109 - 170 hp / 81 - 127 kW
Torque 360 - 460 lb-ft / 488 - 624 N•m

Ratings

Engine
Model
Advertised
hp (kW) @ rpm
Peak
hp (kW) @ rpm
Peak Torque
lb-ft (N•m) @ rpm
QSB4.5 170* 170 (127) @ 2500 170 (127) @ 2500 459 (622) @ 1500
QSB4.5 160 160 (119) @ 2500 165 (123) @ 2300 460 (624) @ 1500
QSB4.5 160 160 (119) @ 2400 165 (123) @ 2200 460 (624) @ 1500
QSB4.5 160** 160 (119) @ 2300 165 (122) @ 2200 460 (624) @ 1500
QSB4.5 160  160 (225) @ 2200  168 (125) @ 2000  459 (622) @ 1500 
QSB4.5 160** 160 (225) @ 2200 165 (123) @ 2000 460 (624) @ 1500
QSB4.5 155 155 (116) @ 2000 155 (116) @ 2000 460 (622) @ 1500
QSB4.5 152 152 (110) @ 2200 152 (110) @ 2200 405 (537) @ 1500
QSB4.5 148 148 (110) @ 2300 156 (116) @ 2000 441 (598) @ 1500
QSB4.5 139 139 (104) @ 2000 139 (104) @ 2000 371 (503) @ 1800
QSB4.5 132 132 (98) @ 2000 132 (98) @ 2000 368 (499) @ 1500
QSB4.5 130 130 (97) @ 2500 140 (104) @ 2400 459 (622) @ 1500
QSB4.5 130 130 (97) @ 2300 130 (97) @ 2300 377 (511) @ 1500
QSB4.5 130** 130 (97) @ 2200 140 (104) @ 2000 459 (622) @ 1500
QSB4.5 130 130 (97) @ 2000 135 (101) @ 1800 457 (620) @ 1500
QSB4.5 130 130 (97) @ 1800 130 (97) @ 1800 400 (452) @ 1400
QSB4.5 121** 121 (90) @ 2200 121 (90) @ 2200 347 (470) @ 1500
QSB4.5 110 110 (82) @ 2500 115 (86) @ 2300 360 (489) @ 1500
QSB4.5 110** 110 (82) @ 2200 115 (86) @ 2000 360 (489) @ 1500
QSB4.5 110 110 (82) @ 1800 110 (82) @ 1800 360 (488) @ 1300

Additional ratings may be available. Check with your Cummins distributor.

*Indicates a restricted rating.
**Indicates a continuous rating.

Features

The QSB4.5 delivers lasting value for your farming operation, with standard features that include:

  • High Pressure Common Rail Fuel System - Delivers high injection pressure (1600 bar) for improved performance and fuel efficiency at every rpm
  • In-Cylinder Combustion Technology - Meets emissions standards without external components; is compatible with high-sulfur fuels for worldwide use
  • Rear Gear Train - Significantly lowers noise output to meet worldwide noise emission standards
  • Wastegated Turbocharger - Designed by Cummins Turbo Technology. Wastegated for better low-speed performance and high-speed boost
  • Two-Stage Dual Fuel Filter - Provides a balanced level of particle separation to maximize fuel filter life and protect vital fuel system components
  • Parent Bore Cylinder Block - Designed for reduced noise and increased durability
  • Directed Piston Cooling - Lower piston temperatures lead to longer life
  • Wider Camshaft Lobes and Larger Tappet Wear Surface - Enhance durability and reliability

Maintenance

The QSB4.5 has been designed for minimal maintenance procedures. Dual stage fuel filtration will improve particle separation and filter life, and protect vital fuel system components. The QSB4.5 is designed to run up to 500 hours between scheduled fuel and oil filter changes.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.

Brochures Available

Title Bulletin Number Request View  
Cummins Power Products Brochure 4087018 Request View  Download
Encompass Tri-Fold Mailer 3624570 Request View  Download
Every Solution - Tier 3 Engine Brochure 4087035 Request View  Download
QSB Tier 3 for Industrial Applications Spec Sheet 4087063 Request View  Download
QSB Tier 3 for Industrial Applications Spec Sheet - French 4087085 Request View  Download
Underground Mining Engines Brochure 4087284 Request View  Download