HardBlok Auto Jacket Filler Engine Block Filler, Short Fill, Two 6 1/4 lb. Bags, Kit
- Hard Block has the optimum ratio of graded iron for strength and vibration dampening. Its thermal coefficient is nearly identical to cast iron, and also proven to work in aluminum blocks.
- It won't shrink nor pull away from cylinder walls.
- It is stable when exposed to water, anti-freeze, and high temperatures.
- Short Fill (12.5 lb.) container to partially fill the jackets of your street or Oval Track engine
- More Horsepower
- Stiffens Cylinder Walls
- Reduces Blow-By & compression loss
- Extended Engine Life
- Dampens Harmonic Vibrations
- Adds Bottom End rigidity
Quantity:Sold as a kit. which includes two 6 1/4 lb. bags.
NOTE: HardBlok is Also available as Tall Fill (28 lb.) container for drag racing.