Heavy-Duty Radiator Caps

For use on heavy-duty trucks, buses and tractors.

• Fits applications with 3/4" deep filler necks.

Heavy-Duty Cool Control Caps

Diverts pressurized coolant to reservoir instead of an overflow tube.

• Corrosion-resistant, heavy-gauge metal construction assures long life and accurate control of pressure.   
• Atmospheric type valve allows cooling system to pressurize as needed, resulting in less strain on system’s components.

Weir-Stat* Thermostats

The most effective cooling system control ever developed.  Provides faster engine warm-up, stable temperature control, longer thermostat and seal life, improved fuel economy and driver comfort. Vehicles can operate without radiator shutters, reducing front axle weight, cost and noise.  Fleet vehicles can operate at higher temperatures without the unnecessary activation of shut-down devices or fan clutches.

• Machined bead edge that seats positively down on a resilient 3-piece flange. As a result, no-leak, precision control is even greater than the original Weir-Stat.   
• Flange retains its elasticity, resists abrasion and corrosion, remains stable during extreme temperature and pressure changes.

* Weir-Stat is a registered trademark of Standard-Thomson Corp.

Green Stripe™ Heavy-Duty Thermostats

Quality controlled factory calibration assures accurate heat control under extreme variations in temperature, load and engine vibrations.

• Made of heavy-gauge brass and stainless steel with a positive piston heat motor.   
• Available in Choke type, Top By-Pass, Bottom By-Pass, Side By-Pass, Normally Open and other types to meet heavy-duty cooling system designs.

NOTE: Seal should always be changed when new thermostat is installed.