13-Piece Cylinder Head Bolt Set for Isuzu 4LE1 4LE2 | Hitachi EX55 ZX55UR ZX55

13-Piece Cylinder Head Bolt Set for Isuzu 4LE1 4LE2 | Hitachi EX55 ZX55UR ZX55

New Aftermarket Cylinder Head Bolt Set designed for select Isuzu 4LE1 and 4LE2 diesel engines used in excavators, aerial equipment, generators, and other industrial machinery.

This set contains 13 cylinder head bolts and is designed for applications including Hitachi EX55, ZX55UR, and ZX55 excavators. It is an excellent replacement when servicing an engine cylinder head where the original head bolts are worn, damaged, stretched, or being replaced as part of a cylinder-head overhaul.

Part / Application Information

* Cylinder Head Bolt Set

* 13-Piece Set

* Isuzu 4LE1

* Isuzu 4LE2

* Hitachi EX55

* Hitachi ZX55

* Hitachi ZX55UR

Compatible Engines

This cylinder head bolt set is listed for:

* Isuzu 4LE1

* Isuzu 4LE2

Isuzu service information confirms the 4LE1 cylinder head uses a combination of M12 and M8 head bolts, with the head assembly secured using a specified tightening sequence.

Compatible Equipment Applications

Published application information includes:

Hitachi Excavators

* EX55

* ZX55

* ZX55UR

Additional Applications

* Denyo DCA-25SPI-C Generator

* Genie AL5 Light Tower

* JLG 400S

* JLG 450A

* JLG 450AJ

* JLG 460SJ

* Terex T25I Generator

* Thomas T45-2 Excavator

Product Details

Specification Details

Product Type Cylinder Head Bolt Set

Quantity 13 Bolts

Engine Isuzu 4LE1 / 4LE2

Application Excavator / Industrial Equipment

Primary Equipment Hitachi EX55 / ZX55 / ZX55UR

Condition New Aftermarket

Set Includes 13 Cylinder Head Bolts

Product Features

* New quality aftermarket replacement

* Complete 13-piece cylinder head bolt set

* Designed for Isuzu 4LE1 and 4LE2 diesel engines

* Fits select Hitachi excavator applications

* Ideal for cylinder-head replacement or engine rebuilding

* Helps replace old, damaged, or previously used head bolts

* Convenient complete-set solution

* Suitable for professional engine repair and maintenance

Cylinder Head Service

Cylinder head bolts provide the clamping force necessary to properly secure the cylinder head to the engine block and maintain the required sealing between the head gasket, cylinder head, and block.

When performing a cylinder-head overhaul, replacing the head bolts can be an important part of the repair, particularly when the manufacturer's service procedure calls for new fasteners.

Isuzu service information specifies a controlled tightening procedure for the 4LE1 cylinder head, including tightening the head bolts in the prescribed sequence.

Important Fitment Information

Please verify your engine model, equipment model, serial number, and original head-bolt configuration before ordering.

This set is listed for 4LE1 and 4LE2 engines, but equipment manufacturers can use different engine configurations and cylinder-head components depending on production and serial number.

Please verify:

* Engine model — 4LE1 or 4LE2

* Equipment make and model

* Serial number

* Existing cylinder-head bolt configuration

* Number of bolts required

* Original part number, if available

Do not rely on the equipment model alone to confirm fitment.

Package Includes

* 1 × Set of 13 Cylinder Head Bolts

* For Isuzu 4LE1 / 4LE2

Head gasket, cylinder head, washers, and other engine components are not included unless specifically shown or stated in the listing.

Installation Note

Cylinder head bolts are critical engine fasteners. Always follow the appropriate Isuzu service manual for bolt installation, tightening sequence, torque specifications, and any required angle-tightening procedure.

Do not reuse head bolts if the applicable engine service procedure specifies replacement.

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