Heavy Duty Alternator

Starters Find by Model Family

Delco Remy Starter Models

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28MT™ Gear Reduction Starter

Engine Size	up to 6.5L
System Voltage	12 or 24 Volts
Rotation	Clockwise
Mounting	SAE #1, SAE #3, Pad
Pinion	9 Tooth, MOD 3 (Metric) 10 Tooth, 8-10 Pitch 10 Tooth, 10-12 Pitch 12 Tooth, 8-10 Pitch
Peak Output	12 Volt 2.9 kW 24 Volt 4.0 kW
Battery Internal Resistance	12 Volt 9 mOhms 24 Volt 3 mOhms
Weight	18.5 lbs / 8.4 kg
Frame Diameter	3.5 in / 90 mm
Overall Length	13.46 in / 342 mm
Motor Type	Wound Field Planetary Gear
Pinion Support	Noseless
Drive Design	Positive Shift
Optional Features	Jump-Start Protection (meets SAE J1493) Wet Clutch Application
Warranty *(US/Canada Only)	1 year / unlimited miles

Learn more about the 28MT

31MT™ Gear Reduction Starter

Engine Size	12 Volt up to 9L
System Voltage	12 or 24 Volts
Rotation	Clockwise
Mounting	SAE #1
Pinion	9 Tooth, MOD 3 (Metric) 10 Tooth, 8-10 Pitch 10 Tooth, 10-12 Pitch
Peak Output	12 Volt 2.9 kW
Battery Internal Resistance	12 Volt 5 mOhm
Weight	18.5 lbs / 8.4 kg
Frame Diameter	3.5 in / 90 mm
Overall Length	11.46 in / 291 mm
Motor Type	Wound Field Planetary Gear
Pinion Support	Noseless
Drive Design	12 Volt Positive Shift Engagement
Warranty (US/Canada Only)	1 year / unlimited miles 2 year / unlimited miles - School Bus

Learn more about the 29MT

35MT™ Gear Reduction Starter

Engine Size	12 Volt up to 9.0L
System Voltage	12 Volts
Rotation	Clockwise
Mounting	SAE #1, SAE #3
Pinion	10 Tooth, 8-10 Pitch 12 Tooth, 8-10 Pitch
Peak Output	4.3 kW
Battery Internal Resistance	4 mOhm
Weight	22.0 lbs / 10.0 kg
Frame Diameter	3.74 in / 95 mm
Overall Length	13.98 in / 355 mm
Motor Type	Wound Field Planetary Gear
Pinion Support	Noseless
Drive Design	Electrical Soft Start
Warranty *(US/Canada Only)	1 year / unlimited miles

Learn more about the 35MT

37MT™ Straight Drive Starter

Engine Size	up to 9.0L
System Voltage	12 or 24 Volts
Rotation	Clockwise Counterclockwise
Mounting	SAE #1, SAE #3
Pinion	10 Tooth, 8-10 Pitch 11 Tooth, MOD 3 (Metric) 12 Tooth, 8-10 Pitch
Peak Output	12 Volt 4.6 kW 24 Volt 7.0 kW
Battery Internal Resistance	12 Volt 4 mOhm 24 Volt 8 mOhm
Weight	50.0 lbs / 22.7 kg
Frame Diameter	5.12 in / 130 mm
Overall Length	Grounded 15.79 in / 401.1 mm Insulated 17.04 in / 432.8 mm
Motor Type	Wound Field Straight Drive
Pinion Support	Nose
Drive Design	Rotatable Drive Housing Positive Shift
Optional Features	Jump-Start Protection (meets SAE J1493)
Warranty *(US/Canada Only)	1 year / unlimited miles

Learn more about the 37MT

38MT™ Gear Reduction Starter

Engine Size	12 Volt up to 10.0L 24 Volt up to 12.0L
System Voltage	12 or 24 Volts
Rotation	Clockwise
Mounting	SAE #1, SAE #3
Pinion	10 Tooth, 8-10 Pitch 11 Tooth, MOD 3 (Metric) 12 Tooth, 8-10 Pitch
Peak Output	12 Volt 4.3 kW 24 Volt 7.8 kW
Battery Internal Resistance	12 Volt 4 mOhm 24 Volt 10 mOhm
Weight	22.0 lbs / 10.0 kg
Frame Diameter	3.9 in / 100 mm
Overall Length	15.55 in / 395.1 mm
Motor Type	Wound Field Planetary Gear
Pinion Support	Noseless
Drive Design	Electrical Soft Start Overrunning Clutch
Optional Features	Over-Crank Protection
Warranty *(US/Canada Only)	1 year / unlimited miles

Learn more about the 38MT

38MT+™ Gear Reduction Starter

Engine Size	up to 13.0L
System Voltage	12 Volts
Rotation	Clockwise
Mounting	SAE #3
Pinion	12 Tooth, MOD 3 (Metric)
Peak Output	4.3 kW
Battery Internal Resistance	4 mOhm
Weight	28.44 lbs / 12.9 kg
Frame Diameter	3.9 in / 100 mm
Overall Length	13.74 in / 349 mm
Motor Type	Wound Field Planetary Gear
Pinion Support	Noseless
Drive Design	Electrical Soft Start
Optional Features	Integrated Over-Crank Protection
Warranty *(US/Canada Only)	1 year / unlimited miles - non OCP 3 year / unlimited miles - OCP

Learn more about the 38MT+

39MT™ Gear Reduction Starter

Engine Size	12 Volt up to 15 Liters 24 Volt up to 16 Liters
System Voltage	12 or 24 Volts
Rotation	Clockwise
Mounting	12 Volt SAE #1, SAE #3 24 Volt SAE #3
Pinion	11 Tooth, 6-8 Pitch 12 Tooth, 8-10 Pitch 12 Tooth, MOD 3 (Metric)
Peak Output	12V 7.3 kW 24V 9.0kW
Battery Internal Resistance	12 Volt 2 mOhm 24 Volt 8 mOhm
Weight	30.8 lbs / 14 kg
Frame Diameter	4.5 in / 114 mm
Overall Length	14.09 in / 358 mm
Motor Type	Wound Field Planetary Gear
Pinion Support	Noseless
Drive Design	Electrical Soft-Start Overrunning Clutch
Optional Features	Rotatable Flange Over-Crank Protection Jump-Start Protection (meets SAE J1493)
Warranty *(US/Canada Only)	3 year / unlimited miles - All Makes 1 year / unlimited miles

Learn more about the 39MT

41MT™ Straight Drive Starter

Engine Size	12 Volt up to 9.8L 24 Volt up to 12.0L
System Voltage	12 or 24 Volts
Rotation	Clockwise
Mounting	SAE #1, SAE #3
Pinion	11 Tooth, 6-8 Pitch 11 Tooth, 8-10 Pitch 12 Tooth, 8-10 Pitch
Peak Output	12 Volt 5.0 kW 24 Volt 7.0 kW
Battery Internal Resistance	12 Volt 4 mOhm 24 Volt 10 mOhm
Weight	50.0 lbs / 22.7 kg
Frame Diameter	5.12 in / 130 mm
Overall Length	17.04 in / 432.8 mm
Motor Type	Wound Field Straight Drive
Pinion Support	Nose
Drive Design	Two-piece rotatable drive housing (12 or 24 positions) Positive Engagement Rubber Shock Absorber
Optional Features	Jump-Start Protection (meets SAE J1493) Over-Crank Protection
Warranty *(US/Canada Only)	1 year / unlimited miles

Learn more about the 41MT

42MT™ Straight Drive Starter

Engine Size	12 Volt up to 14.8L 24 Volt up to 16.0L
System Voltage	12 or 24 Volts
Rotation	Clockwise Counterclockwise
Mounting	SAE #1, SAE #3
Pinion	11 Tooth, 6-8 Pitch 12 Tooth, 8-10 Pitch 13 Tooth, 8-10 Pitch 11 Tooth, MOD 3 (Metric) 12 Tooth, MOD 3 (Metric)
Peak Output	12 Volt 7.3 kW 24 Volt 8.0 kW
Battery Internal Resistance	12 Volt 2 mOhm 24 Volt 8 mOhm
Weight	58.0 lbs / 26.3 kg
Frame Diameter	5.12 in / 130 mm
Overall Length	19.53 in / 496.0 mm
Motor Type	Wound Field Straight Drive
Pinion Support	Nose
Drive Design	Two-piece rotatable drive housing (12 or 24 positions) Positive Engagement Rubber Shock Absorber
Optional Features	Jumpstart Protection (meets SAE J1493) Over-Crank Protection
Warranty *(US/Canada Only)	1 year/unlimited miles

Learn more about the 42MT

50MT™ Straight Drive Starter

Engine Size	up to 29.5L
System Voltage	12, 24, 32 or 64 Volts
Rotation	Clockwise Counterclockwise
Mounting	SAE #3
Pinion	11 Tooth, 6-8 Pitch 12 Tooth, 8-10 Pitch 12 Tooth, MOD 3 (Metric)
Peak Output	12 Volt 8.5 kW 24 Volt 9.0 kW 32 Volt 13.0 kW 64 Volt 12.0 kW
Battery Internal Resistance	12 Volt 2 mOhm 24 Volt 8 mOhm 32 Volt 11 mOhm 64 Volt 40 mOhm
Weight	79.0 lbs / 35.8 kg
Frame Diameter	5.59 in / 142 mm
Overall Length	20.40 in / 518.2 mm
Motor Type	Wound Field Straight Drive
Pinion Support	Nose
Drive Design	Rotatable Drive Housing Positive Engagement Rubber Shock Absorber
Optional Features	Jump-Start Protection (meets SAE J1493)
Warranty *(US/Canada Only)	1 year / unlimited miles

Learn more about the 50MT