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Block Tooling

Cummins 6B & 4B 14mm Head Bolt Fixture
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BHJ Cummins 6B and 4B 14mm Head Bolt Fixture


BHJ Cummins 6B and 4B 14mm Head Bolt Fixture Detail

Part Nos: HBF-CMN14 HBF, HBFCMN, HBFCMN14

BHJ's Cummins Head Bolt Fixture allows precise up-sizing of Cummins 6B & 4B diesel head bolt holes from the stock 12mm configuration, to 14mm. The precision design and heavy-duty construction allows for countless accurate installations either on the bench top or with the engine in the chassis.

The Registration Plate aligns from the stock dowel holes and bolts to the deck surface using the supplied 12mm Bolts. Switching to the 14mm Bolts, also included in the Kit, allows the remaining holes to be drilled and tapped, once the initial holes have been machined to 14mm, thus completing the process.

The Head Bolt Fixture Registration Plate is constructed of aluminum tooling plate and includes all Drills, Taps, Drill Bushing Guides and Mounting Hardware necessary to complete the process.

An optional Dowel Hole Cutter and Oversize Dowels are also available which together provide a larger O.D. Dowel, thus providing adequate wall thickness. Machining the block for 14mm boltholes and re-installing the stock O.D. dowels significantly reduces the dowel wall thickness, as the I.D. of the dowel is machined to accept the 14mm bolt. Up-sizing the dowels in this manner ensures adequate strength for heavy duty applications.

Click here for the Cummins Dowel Hole Cutter and Oversize Dowels Go

...More Diesel Products
BHJ also manufactures Honing Plates (Torque Plates) and O-Ring Groove Cutters specifically tailored to Cummins, Ford, General Motors, International and many other Diesel applications. Virtually all BHJ Tooling and Fixtures can be used in one form or another for building high performance Diesel engines. Contact us for more information on BHJ Diesel applications.

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