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Replaces old part numbers DS-3903301 and DS-3920020.
This is a Thermostat Seal for Cummins B5.9M, B160, 6B5.9, B5.9-M220, QSB4.5, B3.9-M250 and QSB-110C engines. This item is a new replacement part shipped with a 12-month warranty.
WATER PUMP KIT - B SERIES / ISB SERIES (W/ MOUNTING GASKET)
$64.95
WATER PUMP KIT - B (WITH MOUNTING GASKET)
$105.86
FUEL SUPPLY PUMP GASKET - B3.9-C80 / B3.9 / 6C8.3 / B3.9-P / 6B5.9 / B4.5
$3.11
THERMOSTAT - 6C 8.3 / ISC 8.3 / ISL 9 / QSL 9
Genuine Cummins Part
$96.97
RECTANGULAR RING SEAL - 4BT3.9 / 6BT5.9 / ISB3.9 / ISB4.5 / QSB3.9
$1.08
THERMOSTAT - 6BTA5.9-G3 / B4.5 / B5.9-M220 / 6B5.9 / 4B3.9 (180DEGF / 82DEGC)
Surplus Item - Special Pricing Use with DS-3923331 Seal
$11.60
