Used Mack EM6 Engines For Sale in United States

(844) 402-___ SHOW
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Mack EM6 Engine for a 1981 Mack R686ST

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(Used) 1980 Mack EM6-285, ENGINE ASSEMBLY- Displacement: 6.72L, Horsepower: 285, E.C.S.: ASPL, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK...

Condition	Used
Horse Power	285 HP
Fits To Make(s)	Mack
Fits To Model(s)	R686ST
Will Fit Year(s)	1981
Stock Number	P-59537
MLS Number	12317193
Category	Engines
Last Updated	5/13/2026
Location	Elkton, MD, US
Sold By	CRG Heavy Truck Parts

(833) 359-___ SHOW
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1990 Mack EM6 Engine for a Mack RB688S

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MACK EM6-250L ENGINE, 250HP - S/N: OB1084

Condition	Used
Fits To Make(s)	MACK
Fits To Model(s)	RB688S
Stock Number	49603
MLS Number	12817112
Category	Engines
Last Updated	9/30/2025
Location	Crandall, TX, US
Sold By	Tim Jordan's Truck Parts Inc.

(833) 662-___ SHOW
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1984 Mack EM6 Engine

$5,995 USD

1984 Mack EM6-285 diesel engine, 285 HP rating, Maxidyne high torque build, aftercooled, mechanical fuel system, 2 valve heads. EXCELLENT RUNNER, SEE VIDEO. SHOWS 50 PSI OIL PRESSURE AT...

Condition	Used
Stock Number	17770
MLS Number	13661069
Category	Engines
Last Updated	6/22/2025
Location	Carbondale, PA, US
Sold By	Old Forge Power Equipment, Inc

1987 Mack EM6 Engine

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USED EM6-300 MACK ENGINE, 4 VALVE, 1.987 TRUCK, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Stock Number	3416-1208202
MLS Number	10564608
Category	Engines
Last Updated	9/11/2024
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

(305) 688-___ SHOW
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1981 Mack EM6 Engine

$7,950 USD

(GOOD USED TEST RUN INTERNALLY INSPECTED) 1981 Mack EM6 Diesel Engine, 300HP, MECHANICAL FUEL PUMP, 300HP @ 2100RPM, EM6-300, 6 Cylinders, 672 Displacement, Turbocharged, Mechanical,...

Condition	Used
Part Number	EM6
Stock Number	4742
MLS Number	12184807
Category	Engines
Last Updated	7/18/2023
Location	Opa Locka, FL, US
Sold By	CA Truck Parts Inc.

(305) 688-___ SHOW
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1989 Mack EM6 Engine

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(GOOD USED) 1989 Mack EM6 Diesel Engine For Sale, 300HP @ 1750RPM, MECHANICAL FUEL PUMP, 11GBA 59931 1, 672 Displacement, Engine Serial# 9T0347, Stock #2568 WATCH TEST RUN VIDEO ON CA...

Condition	Used
Horse Power	300 HP
Stock Number	2568
MLS Number	10619933
Category	Engines
Last Updated	5/9/2023
Location	Opa Locka, FL, US
Sold By	CA Truck Parts Inc.

1989 Mack EM6 Engine

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USED EM6-350HP MACK 4 VALVE ENGINE, 1.989 TRUCK, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK

Condition	Used
Stock Number	4896-0721223
MLS Number	11505303
Category	Engines
Last Updated	8/11/2022
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1987 Mack EM6 Engine

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USED EM6-285 MACK 2 VALVE ENGINE, AIR BLOWER ON TOP, 1.987, 676 MODEL, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK

Condition	Used
Stock Number	4486-0315227
MLS Number	11264507
Category	Engines
Last Updated	6/9/2022
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1988 Mack EM6-275L Engine

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USED EM6-275L 4 VALVES MECHANICAL FUEL PUMP MACK ENGINE, 1.988 TRUCK, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Stock Number	3153-0918201
MLS Number	10438281
Category	Engines
Last Updated	9/21/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1988 Mack EM6 Engine

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USED EM6-300 4 VALVES MECHANICAL FUEL PUMP MACK ENGINE, 1.988 TRUCK,COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Stock Number	3150-0917202
MLS Number	10436953
Category	Engines
Last Updated	9/17/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1981 Mack EM6 Engine

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USED EM6-285 MACK 2 VALVE ENGINE, 285 HP,1.981, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	285 HP
Stock Number	1323-12121919
MLS Number	10014932
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1981 Mack EM6 Engine

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USED EM6-300 MACK 2 VALVE ENGINE,300 HP, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE,ALSO MANY ENGINES IN STOCK

Condition	Used
Horse Power	300 HP
Stock Number	1320-12121916
MLS Number	10014905
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1989 Mack EM6 Engine

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USED EM6-300L MACK 4 VALVE MECHANICAL PUMP ENGINE,1.989,COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Stock Number	1311-1212197
MLS Number	10014857
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1988 Mack EM6 Engine

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USED EM6-237 MACK ENGINE WITH 237 HP, 2 VALVE, COMPLETE, 1.988,INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	237 HP
Stock Number	1305-1212191
MLS Number	10014832
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1986 Mack EM6 Engine

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USED EM6-237 HP MACK 2 VALVE ENGINE WITH 237 HP, 1.986, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	237 HP
Stock Number	1297-12111920
MLS Number	10014196
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1990 Mack EM6 Engine

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USED EM6-350 HP MACK 4 VALVE MECHANICAL PUMP ENGINE, 1.990, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	350 HP
Stock Number	1281-1211194
MLS Number	10014173
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1985 Mack EM6 Engine

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USED EM6-300 HP MACK 2 VALVE ENGINE, 1.985, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	300 HP
Stock Number	1280-1211193
MLS Number	10013481
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1983 Mack EM6 Engine

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USED EM6-300 MACK 2 VALVE ENGINE, 1.983, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Stock Number	1271-12101911
MLS Number	10012785
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1985 Mack EM6 Engine

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USED EM6-676 MACK 2 VALVE ENGINE, 315 HP, 1.985, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	315 HP
Stock Number	1228-1202198
MLS Number	9995567
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1988 Mack EM6 Engine

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USED EM6-275 MACK 4 VALVE ENGINE, JAKE BRAKE(ENGINE BRAKE), 275 HP, 1.988,COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	275 HP
Stock Number	1192-1129197
MLS Number	9994466
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1981 Mack EM6 Engine

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USED EM6-285 MACK 2 VALVE ENGINE, COMPLETE, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Stock Number	1189-1129194
MLS Number	9994463
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1986 Mack EM6 Engine

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USED EM6-237 HP MACK 2 VALVE ENGINE, COMPLETE, 86, INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	237 HP
Stock Number	1175-1127198
MLS Number	9992730
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1987 Mack EM6 Engine

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USED EM6-300L MACK 4 VALVE MECHANICAL ENGINE, COMPLETE,INSPECTED AND TESTED RUNNING ENGINE, ALSO MANY ENGINES IN STOCK. - FOR PRICE AND SHIPPING CONTACT US AT 786.412.1447 OR 786.412.8910,...

Condition	Used
Stock Number	726-1003195
MLS Number	9929249
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC

1987 Mack EM6 Engine 275 HP

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1987 MACK EM6 ENGINE 275 HP, USED EM6 4VALVE MECHANICAL MACK ENGINE, COMPLETE,INSPECTED AND RUNNING ENGINE.ALSO MANY ENGINES IN STOCK.

Condition	Used
Horse Power	275 HP
Stock Number	576-0916194
MLS Number	9911668
Category	Engines
Last Updated	5/30/2020
Location	Miami, FL, US
Sold By	4-Trucks Enterprises LLC