Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.
You have no items in your shopping cart.
This is a Rectangular Ring Seal for Cummins 4BT3.9, 6BT5.9, ISB3.9, ISB4.5 and QSB3.9 engines. This high quality aftermarket replacement part is guaranteed to meet OEM specifications and is shipped with a 12-month warranty.
Call us at 888.687.0539 with questions or buy online. As always, your satisfaction is guaranteed!
WATER PUMP - 4B / 6B / ISB / QSB (HEAVY DUTY)
$125.71
SEAL,RECTANGULAR RING
Genuine Cummins Part
$8.64
WATER PUMP KIT - B SERIES / ISB SERIES (W/ MOUNTING GASKET)
$64.95
RETURN LINE GASKET - C8.3-250 / B5.9M / QSB5.9 / 6B5.9 / B3.9 130 / C8.3GEN
$1.54
MAIN BEARING SET - 6B (STANDARD)
$58.92
LOWER ENGINE GASKET SET - 6B 5.9 / G5.9 / QSB 5.9
Surplus Item - Special Pricing
$92.02
