- High Performance Engine Builder Tooling and Harmonic Dampers

O-Ring Register Plates

  • Description
  • Inventory Details

BHJ O-Ring Groove Register Plates

Part Nos: ORP-XXX, (various, per application)

O-Ring Register Plates are designed to work specifically with BHJ's O-Ring Groove Cutter. Each Plate is engine-specific and locates on the dowel holes in both the block and heads, thus ensuring precise alignment of the grooves when assembled. Through-holes and threaded holes are machined into each Plate to allow fastening the Plate to both the block and head. Plates are available for virtually any currently-available block and/or head.

Each O-Ring Register Plate is supplied with re-usable locating dowels, for correct registration to the block and head.

Applications range from small-bore ATV and import engines to large diesels. The latest additions to this system are the Caterpillar C15/C18, Cummins ISX and Detroit 60 diesel plates, for use with the new ORG-3PLUS cutter head. These new plates can be used with your existing ORG cutter head, by adding the new 3PLUS tool holder. The longer PLUS tool holder extends the starting-point diameter out to 7", significantly increasing the number of potential future applications.

Click here for a comprehensive tech story on the current trends of O-rings, Fire Rings and Hoops in high-compression applications (

Click here for a customer's O-ring process video on a Ford 6.0 Power Stroke diesel head (YouTube)...

Click here for a customer's Fire Ring process video on a Cummins diesel head (YouTube)...

Click here for a detailed tech story on upgrading a Cummins diesel head with O-rings (Diesel Power Magazine/Truck Trend Network)...

Click Here To Download Instructions

Contact us for tech and pricing.

  • Part Number: ORP-XXX
  • Manufactured by: BHJ Products

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