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Heavy Duty Radiator Caps

For use on heavy-duty trucks, buses and tractors. Fits applications with 3/4" deep filler necks.

  • All Gates radiator pressure caps are constructed of corrosion-resistant, heavy-gauge metal to assure long service life and accurate pressure control.
  • Covers a wide range of pressures.
  • Designed and manufactured to OE standards.
  • No adjustment required for installation.
  • Precise pressure control.

All Parts

1-6 of 6 Items
Part # Product # Description Type Cam Type Locking Venting Shell Diameter Neck Diameter Cap Depth
31307 74100007 31307 RADIATOR CAP Heavy-Duty B Size Filler Neck Cap false 2.81 in 1.14 in
31308 74100008 31308 RADIATOR CAP Heavy-Duty B Size Filler Neck Cap false 2.81 in 1.14 in
31309 74100013 31309 RADIATOR CAP Heavy-Duty B Size Filler Neck Cap false 2.81 in 1.14 in
31348 74100206 31348 RADIATOR CAP Heavy-Duty B Size Filler Neck Cap false 2.81 in 1.14 in
31349 74100207 31349 RADIATOR CAP Heavy-Duty B Size Filler Neck Cap false 2.81 in 1.14 in
31350 74100208 31350 RADIATOR CAP Heavy-Duty B Size Filler Neck Cap false 2.81 in 1.14 in
1-6 of 6 Items

We Handle Heavy Duty.

With a complete line of heavy duty solutions for the truck, bus & vehicular equipment aftermarket, we know how to handle heavy duty. Our high pressure radiator caps are constructed with high quality, durable materials, and designed to raise the boiling point of the radiator fluid to prevent premature boiling and overheating in your heavy duty cooling systems.

We've got your cooling system covered.

Our truck, bus, and vehicular equipment solutions are engineered to work together as a complete system. That means you'll find OE-Exact and OE-Type thermostats, coolant hoses, fuel caps and more, all manufactured to the same high quality, durability, and performance standards you've come to trust from Gates.