3 X 15 HydraMat®, Rectangle - 16-111 valve-covers If you have a header

If you have a header without the collector ring

Recommended for all racing applications where mufflers are required with a substantial decibel reduction over open headers

The original Holley 0-4412 has powered thousands of racers to the winners' circle

natural cast finish

3 X 15 HydraMat®, Rectangle - 16-111 valve-covers If you have a headerOverview: Holley's latest Hydramat design has an 11mm outlet that connects to the TI 450LPH and other pumps that use the same attachment design. The outlet has 6 lock pin positions to allow you to index the Hydramat on the fuel pump for custom applications depending on your fuel tank or cell setup. The multiple pin locking feature on the pump inlet allows for removal and repositioning without damage or loss of retention. This is a huge advantage over