Hatz Cylinder Head Stud 128mm - OEM Number: 05062500

The Hatz Cylinder Head Stud 128mm (OEM 05062500) is a genuine replacement cylinder head fastening stud designed for use on Hatz 1B20 diesel engines. It forms a critical part of the cylinder head assembly, securing the cylinder head to the engine block and maintaining the clamping force required for proper gasket sealing and engine compression.

Manufactured to OEM specifications, this 128mm stud is engineered for high tensile strength, dimensional accuracy, and resistance to vibration and thermal cycling. It is designed to withstand the demanding operating conditions found in industrial, construction, agricultural, and power generation equipment powered by Hatz diesel engines.

FUNCTION AND OPERATION

• Secures the cylinder head to the engine block
• Maintains correct cylinder head gasket compression
• Helps prevent combustion gas, oil, and compression leaks
• Provides consistent clamping force under heat and vibration
• Supports reliable engine performance and longevity

TECHNICAL DETAILS

• OEM Part Number: 05062500
• Type: Cylinder head stud
• Length: 128mm
• Thread Size: M8
• Function: Cylinder head fastening and clamping component
• Application: Hatz 1B20 diesel engines
• Construction: High-strength steel stud
• Design: Double-ended threaded stud for OEM direct replacement fitment

Hatz parts catalogues identify OEM 05062500 as a 128mm M8 cylinder head stud, with four studs used in the cylinder head assembly of the Hatz 1B20 engine.

TYPICAL APPLICATIONS

Suitable for equipment powered by Hatz 1B20 diesel engines, including:

• Plate compactors
• Vibratory rollers
• Portable generators
• Water pumps
• Hydraulic power packs
• Construction and industrial machinery

The 05062500 stud is specifically listed for Hatz 1B20 engine cylinder head assemblies used across a wide range of compact industrial equipment.

IMPORTANT INFORMATION

Always confirm the correct OEM part number, engine model, and stud dimensions before ordering, as cylinder head studs vary between Hatz engine families. Using incorrect studs can result in improper gasket compression, cylinder head distortion, compression loss, oil leaks, or premature engine failure. During installation, inspect the cylinder head, gasket surfaces, washers, and retaining nuts for wear or damage, and always tighten fasteners to the manufacturer's specified torque settings and sequence. Community repair discussions also commonly recommend replacing damaged or stretched cylinder head studs during engine rebuilds to maintain reliable clamping force and sealing performance.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£27.50 for delivery before 10:30am
£20.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.