2001 Western Star 4900 Helper Springs
![Semi Truck Helper Springs](https://ic.truckid.com/semi-truck/pages/air-suspension-parts/semi-truck-air-suspension-parts_collage_0.jpg)
- Timbren®Rear SES Rubber Helper Spring KitWestern Star 4900 / 4900E 2001, Rear SES Rubber Helper Spring Kit by Timbren®. This SES Suspension Upgrade fits the rear suspension truck. Each laser cut piece of steel is precision bent and powder-coated to ensure a quality fit....Improves ride and handlingEliminates trailer sway and roll$667.05