A metallic outer shell designed for containing water for surrounding the manifold exhaust which helps cool the exhaust gases and also helps absorb sound. It has water port inlets and outlets.
NSN 5960-01-198-3933
NSN 5835-01-197-9880
NSN 5975-01-317-2928
NSN 5985-00-359-9067
NSN 5915-01-648-7354
NSN 5910-01-055-7758
NSN 5960-01-317-3800
NSN 5999-01-182-4929
NSN 4140-01-259-4149
NSN 5960-00-464-3375
NSN 6645-00-989-2972
NSN 6145-00-199-2933