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Our office will be closed 9/7/2026 in observance of Labor Day. Orders placed during this time will be processed when our office opens 9/8/2026.

Our office will be closed 9/7/2026 in observance of Labor Day. Orders placed during this time will be processed when our office opens 9/8/2026.

Northern Lights Alternators and Switches for 843 Series Generators

Our vast selection of Northern Lights Alternators and Switches are sure to help with your M843 Generator needs.

If you do not see the Northern Lights part you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly assist you.


ALTERNATOR - M16C / M20CL / M643 / L984 (12V, 14A)

$670.69

FUEL SHUT OFF SOLENOID - M673L2 (12V, STANDARD GROUND)

$354.49

STOP SOLENOID - M773LW3 / NL773LW3 (24V, ISOLATED GROUND)

$428.86

GLOW PLUG - M753K / M753W / NL753K / NL753W (24V)

$64.65

GLOW PLUG - M16C / M20CL / M20CR / M20CR2 (12V)

$32.81

CIRCUIT BREAKER 10A 30VDC MANUAL RESET

$77.60

VOLTAGE REGULATOR - M843N (12V, DC, ADJUSTABLE)

$417.08

TEMPERATURE SWITCH - M673 / M673L / M673L2 / M673L3 (205DEGF/95DEGC, M16 X 1.5)

$154.56

TEMPERATURE SWITCH (230degF / 110degC, M16 X 1.5, STANDARD GROUND)

$77.46

ALTERNATOR 12V/51A ISO GROUND,MEDIUM FRAME (12V/51A, BEARINGS, MEDIUM FRAME)

$1,156.73

RELAY - M773LW2 / M773LW3 / NL773LW3 (12V, DC, 50A)

$8.10

RELAY - M753K / M753W / NL753K / NL753W (24V, DC, SPDT, 20A)

$8.10

OIL PRESSURE SENDER - M773LW2 / M773LW3 (80 PSI, STANDARD GROUND, 1/8" NPT)

$95.83

TEMPERATURE SENDER (250F, STANDARD GROUND, 1/2NPT)

$33.48

TOGGLE SWITCH - M643 / M643K / M643M / NL643 (SPDT, BLACK)

$25.22

HIGH EXHAUST TEMPERATURE SWITCH - M673L / NL673L (#6-32, UNC-2A)

$247.68

TERMINAL STRIP (4 CONNECTION, 60-100A 600VAC)

$74.03

CIRCUIT BREAKER (2A, 250V, AC, LEVER RESET)

$55.93

WATER TEMPERATURE SENDER - M773LW2 / M773LW3 / NL773LW3 (250DEGF, 3/8" NPT)

$31.01

SWITCH & HARNESS ASSEMBLY - M753K (12", HIGH EXHAUST TEMPERATURE 205F N.O.)

$342.61

CIRCUIT BREAKER - M673 / M673D (AC 3A X 2A 250VAC 2-POLE)

$140.07

STARTER MOTOR - M753K2 (12V, 1.7KW, STANDARD GROUND, 9 TOOTH)

$868.88

ALTERNATOR - M16C / M20CL / M20CR / M20CR2 (12V/40A, STANDARD GROUND)

$524.38

CLEAR BULB (12V)

$4.31

ALTERNATOR - M843N / M844 (24V/40A, STANDARD GROUND, MEDIUM FRAME)

$579.56

CIRCUIT BREAKER - M643 (30A, 250VAC, 50/60HZ W/ AUXILIARY CONTACTS & CONNECTION LEADS)

$229.22

ROCKER SWITCH - M643 / M643K / M643M / NL643 (SPST)

$15.84

ROCKER SWITCH - M643 / M673 / M673D / M673L

$29.59

OIL PRESSURE GAUGE - M643 / M643K / M643M / NL643 (80 PSI, 12V)

$65.45

ENGINE TEMPERATURE GAUGE - M16C / MP150C / M643 / L984 (250DEGF/121DEGC, 12V)

$39.01

TEMPERATURE SWITCH - M843NW2 / M843NW3 / NL843NW2 (221DEGF/105DEGC, M16 X 1.5)

$115.49

EXCITOR STATOR (PX-308K2, 309K2, 310K2, 312K2)

$919.41