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Our offices are closed for July 4th. Orders placed online will be processed on Monday 7/7/2025.

Our offices are closed for July 4th. Orders placed online will be processed on Monday 7/7/2025.

Genuine Northern Lights Parts for M643 Generators

Northern Lights M643 Generator Parts

As an Authorized Northern Lights Dealer, we have a huge inventory of genuine parts for Northern Lights M643 generators, all covered by a 6-month factory warranty.

If you do not see the 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.


REAR MAIN SEAL & WEAR SLEEVE KIT - M643 / M673 / M753

$199.38

BELT GUARD - M673L / M643

$99.01

SPRING RECEPTACLE - M643 / M643K / M643M / NL643 (1064 STEEL, ZINC PLATED)

$0.96

HEX HEAD CAP SCREW - M643 / M643K / M643M (M6 X 1.0 X 14 MM, WITH LOCK WASHER)

$2.76

HEX HEAD CAP SCREW - M16C / M20CL / M20CR (M6 X 1.0 X 35 MM, WITH LOCK WASHER)

$3.07

CAP SCREW - M16C / M20CL / M20CR / M673

$22.56

STUD - M643 / M643K / M643M / NL643 (M6 X 1.0 X 20 MM)

$4.56

SEALING WASHER - M643 / M673 (M12, BONDED)

$15.75

WOODRUFF KEY - M643 / M643K / M643M / NL643 (8 MM X 5 MM)

$3.00

O-RING - M643 / M643K / M643M / NL643

$2.11

FILLER NECK O-RING - M643 / M643K / M643M / NL643

$14.93

MOUNTING GASKET - M673L2 / M673L3 / M673LD2 / M673LD3 (OIL PAN)

$104.23

CYLINDER BLOCK INSERT - M643 / M643K / M643M / NL643

$13.81

CONNECTING ROD BOLT - M643 / M673

$92.66

CRANKSHAFT PULLEY - M643L / M673LD3

$213.99

HEX HEAD CAP SCREW - M643 / M643K / M643M / NL643 (M8 X 1.25 X 25 MM)

$0.28

HEX HEAD CAP SCREW - M643 / M673 (M8 X 1.25 X 65 MM)

$2.81

HEX HEAD CAP SCREW - M643 / M673 (M8 X 1.25 X 16 MM)

$1.01

CRANKSHAFT HEXAGON HEAD M6X1.0 X 20MM - 643 / NL643 / M643

$0.23

SEALING WASHER - M643 / M643K / M643M / NL643 (M14, ALUMINUM)

$8.10

SEALING WASHER - M643 / M643K / M643M / NL643

$15.00

SEALING WASHER - M643 / M643K / M643M / NL643 (M10, COPPER)

$15.37

SEALING WASHER - M643 / M643K / M643M / NL643 (M6, COPPER)

$1.29

HEX HEAD NUT - M16C / M20CL / M20CR / M20CR2 (M8 X 1.25)

$0.19

HEX HEAD NUT - M643 / M643K / M643M / NL643 (M6 X 1.0)

$0.05

BACKING PLATE - M643 / M673L

$32.30

RAW WATER PUMP DISCHARGE HOSE - M643 / M673

$27.54

FLAT WASHER - M643 / M643K / M643M / ML643 (M8)

$0.09

LOCK WASHER - M643 / M643K / M643M / NL643 (M8, HELICAL)

$0.23

LOCK WASHER - M643 / M643K / M643M / NL643 (M6, HELICAL)

$0.05

GASKET SET - M643 / M673

Surplus Item - Special Pricing

$364.19

MAIN BEARING - M673 / M673D / M673L / M643 / M753K / M753W (STANDARD)

$14.47

MAIN BEARING - M673 / M673D / M673L / M643 / M753K / M753W (STANDARD, LOWER 1/2)

$14.47

MAIN BEARING - M673 / M673D / M673L / M643 (STANDARD)

$13.69

MAIN BEARING - M673 / M673D / M673L / M643 (STANDARD)

$15.47

DRAIN COCK - M643 / M673 (BRASS, 1/4" BSPT)

$45.30

INSERT GASKET - M643 / M643K / M643M / NL643

$19.07

RAW WATER PUMP - M439 / M445 (WITH LUGGER NL LOGO, MECHANICAL SHAFT SEAL)

$970.46

CENTERBONDED MOUNT - M643 / M643K / M643M / NL643 (100 LB)

$12.82

PLATEFORM MOUNT - M643 / M643K / M643M / NL643 (120 LB)

$127.31

HAND PUMP - M643 / M673

$112.34

OIL PAN - M643 / M673 / M673D / M673L (MARINE)

$331.68

GASKET - M643

$5.27

OIL FILL CAP - M643 (1-1/4BSPP)

$10.79