A set of KENWORTH hood pin bushings made from polyurethane.They will last longer then a rubber bushing. The kenworth part number is K179D450 are K179-450.  The ATRO bushings are MADE IN THE USA!

ATRO’s under hood parts for trucks feature longer life bushings. They feature materials with vibration dampening qualities and are chemically resistant to contaminates such as road salt, grease, oil, acidic cleaning solvents, hydraulic fluid and diesel fuel.

“The properties of Polyurethane are so superior in almost all of their physical properties, that rubber is really NOT a good competitor... it simply can't compete.”
Dr. Jerry Plunkett, PhD Metallurgy/Material Sciences, MIT

As one of the world's leading material experts, Dr. Plunkett knows what thousands of ATRO Engineered Systems' customers already know: ATRO polyurethane components for heavy-duty trucks, trailers and buses dramatically outperform the same parts using traditional rubber while improving vehicle ride quality and reducing stress on related components. That's the basis on which ATRO was formed. But it's just the beginning.

ATRO's patented designs, state-of-the-art manufacturing plant, extensive aftermarket distributor network and OEM customer base make us an industry leader developing products which improve performance, eliminate downtime and help control costs. With the obvious advantage polyurethane has over rubber, combined with our continuous improvements through innovative world-class processes, ATRO truly delivers solutions that mold your future.

ATRO Warranty Policy

Most ATRO product is backed by a three-year parts warranty (see below for conditions and exceptions). During the warranty period beginning with the date of installation, ATRO will replace defective product at no charge. ATRO warranties defective product only. Product that has remained on the vehicle past the warranty period or product not sold by ATRO is not covered under warranty. ATRO’s liability is limited to the replacement of defective product and conditional labor reimbursement through an authorized ATRO distributor.

A product is determined to be defective if a polyurethane to metal bond breaks, an internal component fit is loose, or if the product exhibits obvious signs of wear that will lead to premature failure under normal use. Overloading of the product or any other abnormal use voids warranty.

EXCEPTIONS TO WARRANTY: MIXING ATRO POLYURETHANE PRODUCT WITH RUBBER PRODUCT OR COMPETITIVE POLYURETHANE PRODUCT WITHIN THE SAME APPLICATION VOIDS ALL WARRANTY.

Three Year Warranty

• ATRO Suspension Parts (unless specified in one year warranty section below)
• ATRO Underhood Parts
• ATRO Front Suspension Kits starting with SK##-#####
• ATRO Standard Torque Rods¹ (except small eye style²)

One Year Warranty

• ATRO Sway Bar Assemblies
• ATRO Bumper Pads
• ATRO Torque Rods, small eye style²
• ATRO Hendrickson Pads (numbered as LP50-#####)
• ATRO Equalizer Bushing Kits (if correctly aligned during installation)
• ATRO Front Suspension bushings starting with SP##-#####
• ATRO Transit Bus Parts

Non-standard/customer applications and installation tools are not subject to warranty.

¹ Standard Torque Rods are rods with 2 3/4” ID eye
² Small Eye Torque Rods are rods with 2” ID eye (prior to January 2012 they were designated “tubular style”)

If you have any questions you can contact us at 1  903  757  4572  between 8am and 5pm Central Time  or come by at 5765 E. Loop 281 S. Longview, Texas 75602