Our office will be closed 9/7/2026 in observance of Labor Day. Orders placed during this time will be processed when our office opens 9/8/2026.
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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.
GASKET - M643 / M643K / M643M / NL643 (EXHAUST OUTLET)
$4.91
EXHAUST MANIFOLD MOUNTING GASKET - M673
$27.78
MOUNTING GASKET - M643 / M643K / M643M / NL643 (FRESH WATER PUMP)
$13.97
BACK PLATE GASKET - M643 / M643K / M643M / NL643 (FRESH WATER PUMP)
EXHAUST VALVE - M673 / M673L / M673L2 / M673L3
$20.78
VALVE GUIDE SEAL - M643 / M643K / M643M / NL643
$7.68
ROCKER ARM COVER GASKET - M673L3 / M673L2 / M673LD3 / 668
$18.95
CYLINDER HEAD GASKET - M673L2 / M673L3 / M673LD2 (1.2 MM THICK, TIER 2)
$181.13
