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 120996200 Rocker Arm Cover Gasket is best used on M673L2 and M673LD2 diesel engines. 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!
GASKET - M643 / M643K / M643M / NL643 (EXHAUST OUTLET)
$4.91
EXHAUST MANIFOLD MOUNTING GASKET - M673
$27.84
MOUNTING GASKET - M643 / M643K / M643M / NL643 (FRESH WATER PUMP)
$12.70
BACK PLATE GASKET - M643 / M643K / M643M / NL643 (FRESH WATER PUMP)
EXHAUST VALVE - M673 / M673L / M673L2 / M673L3
$20.82
VALVE GUIDE SEAL - M643 / M643K / M643M / NL643
$6.14
ROCKER ARM COVER GASKET - M673L3 / M673L2 / M673LD3 / 668
$18.98
CYLINDER HEAD GASKET - M673L2 / M673L3 / M673LD2 (1.2 MM THICK, TIER 2)
$181.51
