Cylinder Head Bolt for Cummins 4B / 6B Series

Technical Overview
The cylinder head bolt for Cummins 4B and 6B Series engines secures the cylinder head to the engine block, maintaining compression and preventing leaks. Designed for 4B, 4BT, 6B, and 6BT 3.9 engines, this bolt measures 12 x 1.75 x 70 mm and meets OEM-equivalent performance standards.

Detailed Features
• Thread size: 12 x 1.75 mm.
• Length: 70 mm.
• One bolt required per cylinder for correct head assembly.
• Compatible with Cummins 4B, 4BT, 6B, and 6BT 3.9 engines.

FAQ

1. What is the function of this bolt?
The cylinder head bolt maintains proper sealing pressure between the cylinder head and engine block in Cummins 4B/6B engines.

2. Which engines does it fit?
This bolt fits Cummins 4B, 4BT, 6B, and 6BT 3.9 engines.

3. What are the measurements?
Each bolt measures 12 mm in diameter, 1.75 mm thread pitch, and 70 mm in total length.

4. How many are needed per engine?
One bolt is required per cylinder; the total depends on the number of cylinders in your Cummins 4B/6B engine.

5. Is this OEM or aftermarket?
This is an OEM-quality replacement cylinder head bolt designed to match Cummins specifications for 4B and 6B engines.

At Diesel Pro, you’ll find this premium-quality part backed by a full warranty and express worldwide delivery.