Our offices are closed for Labor Day. Orders placed online will be processed on Tuesday 9/2/2025.
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The Northern Lights NL-25-18307 O-ring can be used for the following generators:
This is a genuine Northern Lights part shipped with a 6-month factory warranty.
Call us at 888.687.0539 if you have any questions about this item. As always, your satisfaction is guaranteed!
MOUNTING O-RING - M643 / M643K / M643M / NL643 (SEA WATER PUMP)
$1.64
O-RING - M643 / M643K / M643M / NL643
$1.83
BACK COVER GASKET - M643 / M643K / M643M / NL643 (SEA WATER PUMP)
$7.77
RAW WATER PUMP SEAL (LIP TYPE)
$17.82
END CAP - M643 / M643K / M643M / NL643 (HEAT EXCHANGER)
$40.90
IMPELLER - M673 M673D / M643 (FOR NL-25-18305 RAW WATER PUMP)
$53.39
