Block Bolts

Select your vehicle to see Block Bolts that fit

Block Bolts for Engine Builds

Block bolts hold the main sections of an engine block together and clamp the areas that support the crankshaft. On a horizontally opposed engine like the Subaru EJ series, they keep the two case halves tightly joined. Builders often replace factory hardware with aftermarket block bolts during a rebuild or when preparing an engine for more power. Consistent clamping force helps the block stay stable under higher cylinder pressure.

We currently have 1 block bolt product in stock, from ARP. It is the ARP Subaru WRX EJ20 & EJ25 Block Bolts, listed for the Subaru WRX with EJ20 and EJ25 engines.

  • Confirm your engine code, not just the model name, before ordering.
  • Plan to fit block bolts while the engine is apart for a rebuild.
  • Follow the bolt maker's torque values, tightening sequence and lubricant instructions.
  • Clean and inspect the threads in the block before installation.

To check fitment, pick your vehicle to see what fits.

Block Bolts for Engine Builds

Block bolts hold the main sections of an engine block together and clamp the areas that support the crankshaft. On a horizontally opposed engine like the Subaru EJ series, they keep the two case halves tightly joined. Builders often replace factory hardware with aftermarket block bolts during a rebuild or when preparing an engine for more power. Consistent clamping force helps the block stay stable under higher cylinder pressure.

We currently have 1 block bolt product in stock, from ARP. It is the ARP Subaru WRX EJ20 & EJ25 Block Bolts, listed for the Subaru WRX with EJ20 and EJ25 engines.

  • Confirm your engine code, not just the model name, before ordering.
  • Plan to fit block bolts while the engine is apart for a rebuild.
  • Follow the bolt maker's torque values, tightening sequence and lubricant instructions.
  • Clean and inspect the threads in the block before installation.

To check fitment, pick your vehicle to see what fits.