Cylinder Head Bolt Set for Paccar MX13 Engine

This new cylinder head bolt set contains the replacement fasteners needed for cylinder head installation on compatible 12.9L PACCAR MX-13 diesel engines used in select Kenworth and Peterbilt trucks.

The kit includes 33 cylinder head bolts in two required sizes. Replacing worn, stretched, corroded, or damaged fasteners helps support proper cylinder head retention, consistent clamping force, head-gasket sealing, and reliable engine operation.

Engine and Vehicle Applications

• Engine make: PACCAR
• Engine model: MX-13 / MX13
• Engine displacement: 12.9L
• Vehicle makes: Kenworth and Peterbilt

Fitment notice: PACCAR MX-13 components may vary by engine serial number, model year, emissions generation, and original equipment configuration. Verify the engine serial number and original bolt part numbers before ordering.

Included in the Box

• 26 cylinder head bolts: M18 x 2 x 200 mm
• Associated part numbers: 1822166PE and 2161004PE
• 7 cylinder head bolts: M12 x 1.75 x 155 mm
• Associated part number: 1822941PE
• Total quantity: 33 cylinder head bolts

Product Details

• Product type: Engine cylinder head bolt set
• Condition: New
• Application: Compatible PACCAR MX-13 cylinder head installations

Cross-Reference Part Numbers

This PACCAR MX-13 head bolt kit replaces or cross-references the following numbers:

• 14-11337-01
• 1822166
• 1822166PE
• 2161004PE
• 1822941
• 1822941PE
• 81070400
• T84835-00

Cross-reference numbers are provided as an identification aid. A matching number alone does not guarantee compatibility. Confirm the correct replacement using the engine serial number and the numbers from the original fasteners or service documentation.

Why Replace the Cylinder Head Bolts?

Cylinder head bolts are exposed to high clamping loads, engine heat, combustion pressure, and repeated operating cycles. Bolts that have stretched, sustained thread damage, developed corrosion, or exceeded the manufacturer’s reuse limits may not provide the required clamping force.

Incorrect or uneven cylinder head clamping may contribute to head-gasket leakage, coolant loss, oil contamination, combustion gases entering the cooling system, or premature engine repair failure. Installing a complete, correctly matched bolt set helps maintain uniform fastening across the cylinder head.

Installation Recommendations

Installation should be completed by a qualified heavy-duty diesel technician using the current PACCAR service procedures for the specific MX-13 engine serial number. Follow the prescribed tightening sequence, torque stages, angle-tightening requirements, lubrication instructions, and bolt-reuse rules.

Before assembly, inspect and clean the engine block threads, bolt holes, cylinder head, deck surface, and related sealing areas. Verify that the correct bolt length is installed in every location. Never use general torque values when engine-specific PACCAR service information is available.

Frequently Asked Questions

How many bolts are included in this PACCAR MX-13 head bolt kit?

The kit contains 33 bolts: 26 M18 x 2 x 200 mm bolts and seven M12 x 1.75 x 155 mm bolts.

What engine does this cylinder head bolt set fit?

It is intended for compatible 12.9L PACCAR MX-13 diesel engines installed in select Kenworth and Peterbilt trucks. Fitment must be confirmed using the engine serial number.

Does this kit replace 1822166PE and 1822941PE?

Yes. The supplied cross-reference information associates this kit with PACCAR part numbers 1822166PE, 2161004PE, and 1822941PE.

Can PACCAR MX-13 cylinder head bolts be reused?

Follow the applicable PACCAR service manual. If a fastener is designated for one-time use, has stretched beyond its permitted dimensions, or fails inspection, it must be replaced.

Order with Fitment Support

Need help verifying this PACCAR MX-13 cylinder head bolt set? Contact Heavy Duty Kits at 888-642-6460 or email parts@heavydutykits.com. Provide the engine serial number and original part numbers for faster assistance.