The QSB6.7 is based on the highly successful B Series engines with charge air cooling and turbocharging for strong performance, and offers power ratings from 133-275 hp (99-205 kW).
The Tier3 and Stage IIIA Cummins QSB6.7 takes you to a whole new level of power, versatility and emissions control. It achieves Tier 3 and Stage IIIA compliance with in-cylinder technology that maintains a compact and simple installation that provides premium performance to every construction application.
This new 6.7-liter diesel is ready to handle your toughest job. It offers major enhancements that make every piece of construction equipment work harder, smarter, quieter and longer.
The QSB6.7 is based on the highly successful B Series engines with charge air cooling and turbocharging for strong performance, and offers power ratings from 133-275 hp (99-205 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 engine designs.
The QSB6.7 offers a wide range of standard features. Every QSB has improved cold-start capability and is five to nine decibels quieter in operation than its predecessor.
To ensure that every QSB6.7 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 QSB6.7 engine is covered by Cummins' three-step warranty, one of the most comprehensive and simplest plans in the industry.
Komatsu SAA6D107E-1 QSB6.7 Engine Rating
Engine Model
Advertised hp (kW) @ rpm
Peak hp (kW) @ rpm
Peak Torque lb-ft (N•m) @ rpm
QSB 275*
275 (205) @ 2500
275 (205) @ 2300
730 (990) @ 1500
QSB 260
260 (194) @ 2500
270 (201) @ 2300
730 (990) @ 1500
QSB 260
260 (194) @ 2400
270 (201) @ 2200
730 (990) @ 1500
QSB 260
260 (194) @ 2300
270 (201) @ 2100
730 (990) @ 1500
QSB 260
260 (194) @ 2200
270 (201) @ 2000
730 (990) @ 1400
QSB 250
250 (186) @ 2500
260 (294) @ 2300
728 (987) @ 1500
QSB 240
240 (179) @ 2500
250 (186) @ 2300
728 (987) @ 1500
QSB 240
240 (179) @ 2000
245 (183) @ 2000
727 (986) @ 1500
QSB 220
220 (164) @ 2300
230 (172) @ 2100
700 (949) @ 1500
QSB 220
220 (164) @ 2200
230 (172) @ 2000
697 (945) @ 1500
QSB 220
220 (164) @ 2000
230 (172) @ 1800
700 (949) @ 1400
QSB 215
215 (160) @ 2500
225 (168) @ 2300
655 (888) @ 1500
QSB 205**
205 (153) @ 1800
209 (156) @ 1600
685 (929) @ 1300
QSB 200
200 (149) @ 2100
205 (149) @ 2100
548 (743) @ 1500
QSB 190
190 (142) @ 2400
204 (152) @ 1900
685 (929) @ 1500
QSB 190**
190 (142) @ 2300
203 (151) @ 1900
685 (930) @ 1500
QSB 189
189 (141) @ 2050
189 (141) @ 2050
541 (733) @ 1500
QSB 185
185 (138) @ 2500
185 (138) @ 1500
575 (780) @ 1500
QSB 173
173 (129) @ 2500
178 (133) @ 2300
590 (800) @ 1500
QSB 173**
173 (129) @ 2200
178 (133) @ 2000
590 (800) @ 1400
QSB 171**
171 (128) @ 2000
171 (128) @ 2000
485 (658) @ 1500
QSB 160
160 (119) @ 2500
165 (123) @ 1900
540 (732) @ 1500
QSB 160**
160 (119) @ 2300
167 (125) @ 2100
540 (731) @ 1500
QSB 155**
155 (116) @ 2000
155 (116) @ 2000
456 (618) @ 1500
QSB 133**
133 (99) @ 2200
133 (99) @ 2100
431 (584) @ 1450
Komatsu SAA6D107E-1 QSB6.7 Engine Overview
The Tier3 and Stage IIIA Cummins QSB6.7 takes you to a whole new level of power, versatility and emissions control. It achieves Tier 3 and Stage IIIA compliance with in-cylinder technology that maintains a compact and simple installation that provides premium performance to every construction application.
This new 6.7-liter diesel is ready to handle your toughest job. It offers major enhancements that make every piece of construction equipment work harder, smarter, quieter and longer.
The QSB6.7 is based on the highly successful B Series engines with charge air cooling and turbocharging for strong performance, and offers power ratings from 133-275 hp (99-205 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 engine designs.
The QSB6.7 offers a wide range of standard features. Every QSB has improved cold-start capability and is five to nine decibels quieter in operation than its predecessor.
To ensure that every QSB6.7 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 QSB6.7 engine is covered by Cummins' three-step warranty, one of the most comprehensive and simplest plans in the industry.
