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Our offices are closed for Labor Day. Orders placed online will be processed on Tuesday 9/2/2025.

Our offices are closed for Labor Day. Orders placed online will be processed on Tuesday 9/2/2025.

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)

$672.09

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

$355.23

STOP SOLENOID - M844K2 (12V, ISOLATED GROUND)

$226.18

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

$429.75

OIL PRESSURE SWITCH - M773LW2 / M773LW3 / NL773LW3 (14.2 PSI, 1/8" BSPT)

$33.08

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

$31.15

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

$64.79

ALTERNATOR MOUNTING BRACKET - M843N / M843NK / M843NW

Surplus Item - Special Pricing

$18.03

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

$417.94

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

$821.58

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

$154.89

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

$1,159.14

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

$6.48

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

$8.10

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

$96.03

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

Surplus Item - Special Pricing

$13.90

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

$283.65

ALTERNATOR - M843N / M843NK2 (12V/40A, ISOLATED GROUND)

$2,383.82

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

$31.07

STARTER MOTOR - M843N / M843NK2 (12V, ISOLATED GROUND)

$1,724.95

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

$566.73

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

$212.32

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

$870.69

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

$525.47

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

$287.50

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

$15.87

ROCKER SWITCH - M643 / M673 / M673D / M673L

$29.66

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

$65.59

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

$39.09

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

$115.73

TEMPERATURE SWITCH - M673 / M673L / M673L2 (95C/203F M16X1.5 STD GROUND)

$168.03