Our offices are closed for Labor Day. Orders placed online will be processed on Tuesday 9/2/2025.
You have no items in your shopping cart.
This is a genuine Northern Lights Cotter for 643 marine generator sets. This is a genuine Northern Lights part shipped with a 6-month warranty.
Call us at 888.687.0539 with questions or buy online. As always, your satisfaction is guaranteed!
INTAKE VALVE - M643 / M643K / M643M / NL643
$24.06
EXHAUST VALVE - M673 / M673L / M673L2 / M673L3
$20.82
VALVE GUIDE SEAL - M643 / M643K / M643M / NL643
$6.14
VALVE SPRING - M643 / M643K / M643M / NL643
$4.52
