Western Star 4900 Coolant Hoses 1988–2026
Silicone coolant hoses, radiator hoses and molded elbows — 4-ply reinforced replacements matched by inner diameter and OEM number, the fix for the most common roadside coolant failure. The 4900 is Western Star's severe-service conventional — logging, oilfield and heavy-haul duty in production since the late 1980s.
5 results
On Order
PartStop
Universal Silicone Hump Hose Coupler - 2" ID x 6" Length - 4-Ply Reinforced for Turbo, Intake & Coolant F02484S352
OEM F02484S352
Cooling System
$21.99View
On Order
PartStop
EGR Silicone Reducer Hose for Cummins ISX15 - 57mm to 48mm ID - Aramid Reinforced with Stainless Steel Ring F02486S352
OEM 3687223
Cooling System
$38.99View
On Order
PartStop
90-Degree Molded Elbow Hose - 1.00" ID - Fits Detroit Diesel Series 50 & 60 - Replaces 23518315,F02518S352
OEM 23518315
Cooling System
$19.99View
On Order
PartStop
Molded Crankcase Breather Hose - 1.00" ID - Fits Cummins ISX15 & QSX15 - Replaces 4298695, 3427229,F02519S352
OEM 4298695
Cooling System
$52.99View
In StockPartStop
11549 Hose Separator Heavy Duty Trucks 100469D 1004690 10QE125P1 5396-11549
OEM 11549
Cooling System
$13.99View
Every part above carries its own verified fitment — check the OEM / cross-reference number on the listing against your truck, or look up your VIN and we'll match parts to your exact Western Star 4900. Not sure? Call (253) 600-1351 — we verify fitment before you buy.