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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 Water Pumps and Heat Exchangers for 843 Series Generators

Our huge selection of Northern Lights Water Pumps and Heat Exchangers 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.


RETAINING SPRING - M753W2 / NL753W2 (THERMOSTAT)

$12.46

THERMOSTAT SEAL RING - M944W / M843-12N / M984 / M854B

$26.47

GASKET - M753K / M753W / NL753K / NL753W (SEA WATER PUMP)

$19.42

GASKET - M16C / M20CL / M20CR / M20CR2 (THERMOSTAT COVER)

$9.97

FRESH WATER PUMP KIT - M843N / M844 / M844L (MARINE)

Mounting Gasket and Cap Included

$267.78

THERMOSTAT - M16C / M753K / M773LW2 (180°F/82°C)

$30.34

END CAP - M16C / M20CL / M20CR / M20CR2 (HEAT EXCHANGER)

$68.72

INLET HOSE - M843JK / M843NK / M843NW2 / M843NW3 (FRESH WATER PUMP, MOLDED)

$45.34

RETAINING SPRING - M753K / M753W / NL753K / NL753W (THERMOSTAT)

$11.38

HEAT EXCHANGER MANIFOLD EXPANSION PLUG ASSEMBLY - M843 / M773

Surplus Item - Special Pricing

$229.32

COOLANT FILLER CAP - M30C / M673 / L984 / M864K (7 PSI, DOUBLE SEAL)

$18.94

REPAIR KIT - L844D / M844K / M844LK (FOR RAW WATER PUMPS 25-12057 & 25-15405)

$373.76

SPLINE SEAL - ONLY SOLD IN 25-12060 IMPELLER KIT

Call for price

RAW WATER PUMP - M753K / M753W / M753W2 / NL753K

$693.29

IMPELLER KIT - M16C / M20CL / M20CR / M20CR2 (WITH O-RING)

From $46.30

WEAR PLATE - M753K / M753W / M753W2 / NL753K (SEA WATER PUMP)

$20.58

END COVER - M753K / M753W / M753W2 / NL753K (SEA WATER PUMP)

$47.42

BEARING - M16C / M20CL / M20CR / L984 (SEA WATER PUMP)

$11.28

SEAL - M753K / M753W / M753W2 / NL753K (SEA WATER PUMP, LIP TYPE)

$28.78

MECHANICAL SEAL - M643 / M643K / M643M / NL643 (SEA WATER PUMP, GREEN)

$64.47

COVER O-RING - M16C / M753K / L844D / L984 (SEA WATER PUMP)

$1.92

RAW WATER PUMP WASHER - M843JK / M843JW

$18.72

FRESH WATER PUMP - M843N / M843NK / M843NW (INDUSTRIAL)

$276.76

GASKET - M20CR2 / M20CRW2 / L844D / M843JK (FRESH WATER PUMP)

$7.61